Contexts stringlengths 0 32.3k | Questions stringlengths 14 191 | Answers stringlengths 6 29k ⌀ |
|---|---|---|
What causes Bell's palsy ? | What causes Bell's palsy? | |
What are the treatments for Bell's palsy ? | How might Bell's palsy be treated? | |
What is (are) Sclerosing mesenteritis ? | Sclerosing mesenteritis is one of many terms used to describe a spectrum of chronic inflammatory diseases affecting the small bowel mesentery, the membrane that anchors the small intestine to the back of the abdominal wall. The cause of this condition is unknown. The most common symptom is abdominal pain or a palpable abdominal mass. Click on the highlighted text to view an illustration of the small intestine. | |
What are the symptoms of Sclerosing mesenteritis ? | What are the signs and symptoms of sclerosing mesenteritis? Common symptoms of sclerosing mesenteritis include abdominal pain or a palpable abdominal mass, weight loss, abdominal distention, vomiting, diarrhea, constipation, and fever of unknown cause. | |
What are the treatments for Sclerosing mesenteritis ? | How might sclerosing mesenteritis be treated? Treatment for sclerosing mesenteritis is most often based on the stage of the disease. In the early stage when fat necrosis predominates, many physicians tend not to treat because the disease process may regress spontaneously. When chronic inflammation becomes a prominent feature but fibrosis is not yet fully developed, medical treatment with corticosteroids, colchicine, immunosuppressants, or orally administered progesterone may be beneficial in the prevention of disease progression. These medications are only given for a short period since they can cause serious side effects. Some studies have shown that patients with sclerosing mesenteritis may benefit from a drug combination of tamoxifen and prednisone. When fibrosis becomes extensive, especially when the disease presents as a large fibrotic mass with bowel obstruction, surgical interventions may be necessary. | |
What is (are) Long QT syndrome 1 ? | Romano-Ward syndrome is the most common form of inherited long QT syndrome. Symptoms include arrhythmia, fainting, cardiac arrest, and sudden death. There are six different types of this syndrome, long QT 1 through 6. Each type is caused by a change in a different gene. The most prevalent form of long QT syndrome is long QT type 1. Long QT type 1 is caused by changes in the KCNQ1 gene. Romano-Ward syndrome is inherited in an autosomal dominant fashion. | |
What are the symptoms of Long QT syndrome 1 ? | What are the signs and symptoms of Long QT syndrome 1? The Human Phenotype Ontology provides the following list of signs and symptoms for Long QT syndrome 1. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the ear - Autosomal dominant inheritance - Heterogeneous - Prolonged QT interval - Sudden cardiac death - Syncope - Torsade de pointes - Ventricular fibrillation - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Cap myopathy ? | Cap myopathy is a disorder that primarily affects skeletal muscles, the muscles that the body uses for movement. People with cap myopathy have muscle weakness (myopathy) and poor muscle tone (hypotonia) throughout the body, but they are most severely affected in the muscles of the face, neck, and limbs. The muscle weakness, which begins at birth or during childhood, can worsen over time. The name cap myopathy comes from characteristic abnormal cap-like structures that can be seen in muscle cells when muscle tissue is viewed under a microscope. The severity of cap myopathy is related to the percentage of muscle cells that have these caps. Individuals in whom 70 to 75 percent of muscle cells have caps typically have severe breathing problems and may not survive childhood, while those in whom 10 to 30 percent of muscle cells have caps have milder symptoms and can live into adulthood. Cap myopathy can be caused by mutations in the in the ACTA1, TPM2, or TPM3 genes. This condition follows an autosomal dominant manner of inheritance, however, most cases are not inherited; they result from new mutations in the gene and occur in people with no history of the disorder in their family. | |
What are the symptoms of Hyde Forster Mccarthy Berry syndrome ? | What are the signs and symptoms of Hyde Forster Mccarthy Berry syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Hyde Forster Mccarthy Berry syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Cognitive impairment 90% Plagiocephaly 90% Abnormality of movement 50% Brachycephaly - Coarse facial features - Frontal bossing - Intellectual disability, moderate - Prominent forehead - X-linked inheritance - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Nicolaides-Baraitser syndrome ? | Nicolaides-Baraitser syndrome (NCBRS) is a very rare condition characterized by severe intellectual disability and various physical features. Signs and symptoms may include seizures, short stature, sparse hair, distinctive facial characteristics, short fingers and toes (brachydactyly), and prominent joints in the fingers and toes (interphalangeal joints). Features of the condition can worsen over time. NCBRS is caused by changes (mutations) in the SMARCA2 gene and is inherited in an autosomal dominant manner. All cases reported to date have been sporadic, occurring in people with no family history of NCBRS. | |
What are the symptoms of Nicolaides-Baraitser syndrome ? | What are the signs and symptoms of Nicolaides-Baraitser syndrome? Nicolaides-Baraitser syndrome (NCBRS) is typically characterized by intellectual disability, seizures, short stature, sparse hair, distinctive facial features, short fingers and toes (brachydactyly), and prominent joints of the fingers and toes (called interphalangeal joints). Some features of the condition may vary among affected people. All people with NCBRS have intellectual disability. In most cases it is severe, but in some cases it may be moderate or mild. Language is particularly limited, with at least 30% of affected people never developing speech. Major motor milestones such as sitting and walking are usually not very delayed. People with NCBRS are often happy and friendly, but may have temper tantrums or periods of aggression. Some people have some symptoms of autism spectrum disorder. Epilepsy occurs in about 2/3 of affected people. The type of seizures that occur can vary. Facial characteristics are usually not recognized in younger affected people. They may include a triangular-shaped face; prominent eyelashes; a nose with a broad base, thick nostrils, and upturned tip; a broad philtrum; and wide mouth. The palpebral fissures (width of the eyes) are sometimes narrow and/or downslanting. As people with NCBRS age, the amount of subcutaneous fat tissue tends to decrease, making the skin below the eyes sagging and wrinkled, especially at the cheeks when smiling. However, some affected people retain full cheeks. Facial characteristics typically become more pronounced with increasing age. In some affected adults, the lower third of the face becomes markedly broad. Sparse scalp hair is a major feature of NCBRS and is present in almost all affected people. It often gradually worsens with age, but in some people it improves over time. Skin is usually wrinkled and more noticeable in the distal limbs. Teeth may be widely spaced, and eruption of teeth (baby or adult) may be delayed. While the hands and feet usually appear normal at birth, the interphalangeal joints become prominent in the majority of affected people. Bone age can vary, and osteoporosis is not uncommon. The Human Phenotype Ontology provides the following list of signs and symptoms for Nicolaides-Baraitser syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormal hair quantity 90% Abnormal joint morphology 90% Abnormality of the palate 90% Anteverted nares 90% Brachydactyly syndrome 90% Cognitive impairment 90% Long philtrum 90% Microcephaly 90% Neurological speech impairment 90% Thin vermilion border 90% Triangular face 90% Wide mouth 90% Abnormality of the distal phalanx of finger 50% Abnormality of the eyelashes 50% Abnormality of the metacarpal bones 50% Abnormality of the nipple 50% Blepharophimosis 50% Clubbing of toes 50% Cryptorchidism 50% Eczema 50% Highly arched eyebrow 50% Narrow nasal bridge 50% Sandal gap 50% Scoliosis 50% Seizures 50% Short stature 50% Abnormality of epiphysis morphology 7.5% Accelerated skeletal maturation 7.5% Delayed skeletal maturation 7.5% Hernia 7.5% Short stature 13 of 23 Narrow nasal bridge 12 of 22 Widely spaced teeth 11 of 21 Scoliosis 9 of 22 Unilateral narrow palpebral fissure 9 of 22 Eczema 8 of 23 Absent speech - Aggressive behavior - Broad philtrum - Failure to thrive - Intellectual disability, severe - Intrauterine growth retardation - Low anterior hairline - Poor speech - Prominent interphalangeal joints - Short metacarpal - Short metatarsal - Short phalanx of finger - Sparse scalp hair - Thick lower lip vermilion - Wide nasal base - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What causes Nicolaides-Baraitser syndrome ? | What causes Nicolaides-Baraitser syndrome? Nicolaides-Baraitser syndrome (NCBRS) is caused by mutations in the SMARCA2 gene, which is located on the small arm of chromosome 9. All mutations that have been identified in affected people have been either missense mutations or in-frame deletions. There may be some correlations between specific types of mutations and some of the features that result (called genotype-phenotype correlations), but more studies are needed to draw definitive conclusions. | |
Is Nicolaides-Baraitser syndrome inherited ? | How is Nicolaides-Baraitser syndrome inherited? Nicolaides-Baraitser syndrome (NCBRS) is inherited in an autosomal dominant manner. This means that having a change (mutation) in only one of the two copies of the responsible gene in each cell is enough to cause features of the condition. All known cases of NCBRS have been sporadic. This means it is thought that the mutation occurred for the first time in each affected person (called a de novo mutation). There have not been reports of NCBRS being inherited from a parent, or recurring in any family (with the exception of one pair of identical twins). | |
What are the symptoms of N syndrome ? | What are the signs and symptoms of N syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for N syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of chromosome stability 90% Acute leukemia 90% Cognitive impairment 90% Cryptorchidism 90% Displacement of the external urethral meatus 90% Hypertonia 90% Megalocornea 90% Sensorineural hearing impairment 90% Visual impairment 90% Hearing impairment - Hypospadias - Intellectual disability - Neoplasm - Spasticity - X-linked inheritance - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Jervell Lange-Nielsen syndrome ? | Jervell Lange-Nielsen syndrome is a form of long QT syndrome. Symptoms include deafness from birth, arrhythmia, fainting, and sudden death. There are two different types, Jervell Lange-Nielsen syndrome type 1 and 2. It is inherited in an autosomal recessive fashion. | |
What are the symptoms of Jervell Lange-Nielsen syndrome ? | What are the signs and symptoms of Jervell Lange-Nielsen syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Jervell Lange-Nielsen syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Autosomal recessive inheritance - Congenital sensorineural hearing impairment - Prolonged QT interval - Sudden cardiac death - Syncope - Torsade de pointes - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Wilson-Turner syndrome ? | What are the signs and symptoms of Wilson-Turner syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Wilson-Turner syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Obesity 90% Gynecomastia 50% Neurological speech impairment 50% Abnormality of calvarial morphology 7.5% Abnormality of the voice 7.5% Aplasia/Hypoplasia of the earlobes 7.5% Arthritis 7.5% Coarse facial features 7.5% Cognitive impairment 7.5% Cryptorchidism 7.5% Gait disturbance 7.5% Hypoplasia of penis 7.5% Incoordination 7.5% Large earlobe 7.5% Lymphedema 7.5% Macrotia 7.5% Mandibular prognathia 7.5% Narrow mouth 7.5% Pointed chin 7.5% Preauricular skin tag 7.5% Reduced number of teeth 7.5% Round ear 7.5% Scoliosis 7.5% Seizures 7.5% Short palm 7.5% Striae distensae 7.5% Synophrys 7.5% Tapered finger 7.5% Thick eyebrow 7.5% Toxemia of pregnancy 7.5% Umbilical hernia 7.5% Brachycephaly - Broad nasal tip - Decreased muscle mass - Decreased testicular size - Deeply set eye - Delayed puberty - Delayed speech and language development - Emotional lability - Hypogonadism - Intellectual disability - Kyphosis - Microcephaly - Micropenis - Misalignment of teeth - Muscular hypotonia - Prominent supraorbital ridges - Retrognathia - Short ear - Short foot - Short stature - Small hand - Truncal obesity - X-linked dominant inheritance - X-linked recessive inheritance - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Porencephaly cerebellar hypoplasia internal malformations ? | What are the signs and symptoms of Porencephaly cerebellar hypoplasia internal malformations? The Human Phenotype Ontology provides the following list of signs and symptoms for Porencephaly cerebellar hypoplasia internal malformations. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Agenesis of cerebellar vermis - Atria septal defect - Autosomal recessive inheritance - Cerebellar hypoplasia - Porencephaly - Situs inversus totalis - Tetralogy of Fallot - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Bardet-Biedl syndrome 11 ? | What are the signs and symptoms of Bardet-Biedl syndrome 11? The Human Phenotype Ontology provides the following list of signs and symptoms for Bardet-Biedl syndrome 11. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the kidney 95% Abnormal electroretinogram 90% Abnormality of retinal pigmentation 90% Cognitive impairment 90% Multicystic kidney dysplasia 90% Obesity 90% Postaxial hand polydactyly 90% Micropenis 88% Myopia 75% Astigmatism 63% Hypertension 50% Hypoplasia of penis 50% Nystagmus 50% Polycystic ovaries 50% Short stature 50% Cataract 30% Glaucoma 22% Rod-cone dystrophy 8% Abnormality of the ovary 7.5% Cryptorchidism 7.5% Finger syndactyly 7.5% Hearing impairment 7.5% Hepatic failure 7.5% Hypertrichosis 7.5% Low-set, posteriorly rotated ears 7.5% Macrocephaly 7.5% Medial flaring of the eyebrow 7.5% Nephrotic syndrome 7.5% Neurological speech impairment 7.5% Prominent nasal bridge 7.5% Short neck 7.5% Vaginal atresia 7.5% Aganglionic megacolon 5% Asthma - Ataxia - Autosomal recessive inheritance - Biliary tract abnormality - Brachydactyly syndrome - Broad foot - Congenital primary aphakia - Decreased testicular size - Delayed speech and language development - Dental crowding - Diabetes mellitus - Foot polydactyly - Gait imbalance - Hepatic fibrosis - High palate - Hirsutism - Hypodontia - Hypogonadism - Intellectual disability - Left ventricular hypertrophy - Nephrogenic diabetes insipidus - Poor coordination - Radial deviation of finger - Retinal degeneration - Short foot - Specific learning disability - Strabismus - Syndactyly - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Dyskeratosis congenita autosomal recessive ? | What are the signs and symptoms of Dyskeratosis congenita autosomal recessive? The Human Phenotype Ontology provides the following list of signs and symptoms for Dyskeratosis congenita autosomal recessive. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of neutrophils 90% Abnormality of the fingernails 90% Anemia 90% Hypermelanotic macule 90% Thrombocytopenia 90% Abnormality of coagulation 50% Abnormality of female internal genitalia 50% Abnormality of the pharynx 50% Abnormality of the testis 50% Anonychia 50% Aplasia/Hypoplasia of the skin 50% Aplastic/hypoplastic toenail 50% Bone marrow hypocellularity 50% Carious teeth 50% Cellular immunodeficiency 50% Cognitive impairment 50% Hyperhidrosis 50% Hypopigmented skin patches 50% Intrauterine growth retardation 50% Malabsorption 50% Palmoplantar keratoderma 50% Recurrent fractures 50% Recurrent respiratory infections 50% Rough bone trabeculation 50% Short stature 50% Skin ulcer 50% Telangiectasia of the skin 50% Tracheoesophageal fistula 50% Abnormal blistering of the skin 7.5% Abnormality of the eyebrow 7.5% Alopecia 7.5% Aseptic necrosis 7.5% Cataract 7.5% Cerebral calcification 7.5% Cirrhosis 7.5% Diabetes mellitus 7.5% Displacement of the external urethral meatus 7.5% Hearing impairment 7.5% Hepatic failure 7.5% Hepatomegaly 7.5% Hypopigmentation of hair 7.5% Inflammatory abnormality of the eye 7.5% Lymphoma 7.5% Neoplasm of the pancreas 7.5% Premature graying of hair 7.5% Reduced bone mineral density 7.5% Scoliosis 7.5% Splenomegaly 7.5% Aplastic anemia - Autosomal recessive inheritance - Esophageal stricture - Hepatic fibrosis - Hyperpigmentation of the skin - Increased lacrimation - Intellectual disability - Microcephaly - Microdontia - Nail dysplasia - Nasolacrimal duct obstruction - Oral leukoplakia - Osteoporosis - Phenotypic variability - Pterygium formation (nails) - Pulmonary fibrosis - Small nail - Sparse eyelashes - Sparse scalp hair - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Myoclonic epilepsy with ragged red fibers ? | Myoclonic epilepsy with ragged red fibers (MERRF) is a multisystem disorder characterized by myoclonus, which is often the first symptom, followed by generalized epilepsy, ataxia, weakness, and dementia. Symptoms usually first appear in childhood or adolescence after normal early development. The features of MERRF vary widely from individual to individual, even within families. Other common findings include hearing loss, short stature, optic atrophy, and cardiomyopathy with Wolff-Parkinson-White (WPW) syndrome. The diagnosis is based on clinical features and a muscle biopsy finding of ragged red fibers (RRF). In over 80% of cases, MERRF is caused by mutations in the mitochondrial gene called MT-TK. Several other mitochondrial genes have also been reported to cause MERRF, but many of the individuals with mutations in these other genes have additional signs and symptoms. Seizures associated with MERRF are generally treated with conventional anticonvulsant therapy. Coenzyme Q10 and L-carnitine are often used with the hope of improving mitochondrial function. | |
What are the symptoms of Myoclonic epilepsy with ragged red fibers ? | What are the signs and symptoms of Myoclonic epilepsy with ragged red fibers? Because muscle cells and nerve cells have especially high energy needs, muscular and neurological problems are common features of diseases that affect the mitochondria. MERRF is a progressive multi-system syndrome with symptoms that begin during childhood, but onset may occur in adulthood. The rate of progression varies widely. Onset and extent of symptoms can differ widely from individual to individual and among affected siblings. The classic features of MERRF include: Myoclonus (brief, sudden, twitching muscle spasms) the most characteristic symptom Epileptic seizures Ataxia (impaired coordination) Ragged-red fibers (a characteristic microscopic abnormality observed in muscle biopsy of patients with MERRF and other mitochondrial disorders) Additional symptoms may include: hearing loss, lactic acidosis (elevated lactic acid level in the blood), short stature, exercise intolerance, dementia, cardiac defects, eye abnormalities, and speech impairment. However, the exact symptoms aren't the same for everyone, because a person with mitochondrial disease can have a unique mixture of healthy and non-working mitochondria, with a unique distribution in the body. Despite their many potential effects, mitochondrial diseases sometimes cause little disability. Sometimes, a person has enough healthy mitochondria to compensate for the defective ones. The Human Phenotype Ontology provides the following list of signs and symptoms for Myoclonic epilepsy with ragged red fibers. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of movement 90% EMG abnormality 90% Incoordination 90% Multiple lipomas 90% Myopathy 90% Sensorineural hearing impairment 90% Cognitive impairment 50% Short stature 50% Optic atrophy 7.5% Ataxia - Generalized myoclonic seizures - Increased serum lactate - Increased serum pyruvate - Mitochondrial inheritance - Muscle weakness - Myoclonus - Ragged-red muscle fibers - Seizures - Spasticity - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
Is Myoclonic epilepsy with ragged red fibers inherited ? | Is myoclonic epilepsy associated with ragged red fibers genetic? If so, how is it inherited? MERRF is caused by mutations in the mitochondrial DNA and is transmitted by maternal inheritance. It is called maternal inheritance because a child inherits the great majority of their mitochondria from their mother through the egg. The Centre for Genetics Education provides a detail description of maternal inheritance. The mother of an individual with MERRF usually has a mitochondrial mutation and may or may not have symptoms. Or, an individual with MERRF may have a mitochondrial mutation that just occurred in them, called a de novo mutation. If the mother has the mitochondrial mutation, all of her children will inherit the mutation and may or may not have symptoms. All of her daughters children will also inherit the mitochondrial mutation. Her son's children are not at risk of inheriting the mutation. | |
What is (are) CHILD syndrome ? | CHILD syndrome, also known as congenital hemidysplasia with ichthyosiform erythroderma and limb defects, is a genetic condition that is typically characterized by large patches of skin that are red and inflamed (erythroderma) and covered with flaky scales (ichthyosis) and limb underdevelopment or absence. The development of organs such as the brain, heart, lungs, and kidneys may also be affected. Several cases in which milder signs and symptoms have been reported in the medical literature. The condition is caused by mutations in the NSDHL gene, a gene that provides instructions for the production of an enzyme involved in the making of cholesterol. CHILD syndrome is inherited in an X-linked dominant fashion and is almost exclusively found in females. | |
What are the symptoms of CHILD syndrome ? | What are the signs and symptoms of CHILD syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for CHILD syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Congenital ichthyosiform erythroderma 100% Stillbirth 99% Abnormality of bone mineral density 90% Abnormality of the ribs 90% Abnormality of the thyroid gland 90% Amniotic constriction ring 90% Aplasia of the pectoralis major muscle 90% Aplasia/hypoplasia of the extremities 90% Asymmetric growth 90% Atria septal defect 90% Cognitive impairment 90% Epiphyseal stippling 90% Flexion contracture 90% Hypoplastic left heart 90% Ichthyosis 90% Skin rash 90% Sprengel anomaly 90% Thin skin 90% Upper limb phocomelia 90% Abnormality of the nail 75% Hyperkeratosis 75% Parakeratosis 75% Cerebral cortical atrophy 50% Abnormality of cardiovascular system morphology 7.5% Abnormality of epiphysis morphology 7.5% Abnormality of the adrenal glands 7.5% Abnormality of the cranial nerves 7.5% Abnormality of the fingernails 7.5% Abnormality of the heart valves 7.5% Alopecia 7.5% Aplasia/Hypoplasia of the lungs 7.5% Arteriovenous malformation 7.5% Cleft palate 7.5% Congenital hip dislocation 7.5% Dry skin 7.5% Elevated 8(9)-cholestenol 7.5% Elevated 8-dehydrocholesterol 7.5% Hearing impairment 7.5% Hypoplastic pelvis 7.5% Hypoplastic scapulae 7.5% Intrauterine growth retardation 7.5% Kyphosis 7.5% Myelomeningocele 7.5% Polycystic ovaries 7.5% Pulmonary hypoplasia 7.5% Renal hypoplasia/aplasia 7.5% Scoliosis 7.5% Short clavicles 7.5% Short ribs 7.5% Short stature 7.5% Ventricular septal defect 7.5% Vertebral hypoplasia 7.5% Adrenal hypoplasia 5% Aplasia/Hypoplasia involving the central nervous system 5% Thyroid hypoplasia 5% Abnormality of the cardiac septa - Cleft upper lip - Heterogeneous - Hydronephrosis - Intellectual disability, mild - Mild intrauterine growth retardation - Single ventricle - Umbilical hernia - X-linked dominant inheritance - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Russell-Silver syndrome ? | Russell-Silver syndrome (RSS) is a congenital disorder that causes poor growth; low birth weight; short height; and size differences (asymmetry) of parts of the body. Other signs and symptoms may include poor appetite; low blood sugar (hypoglycemia) due to feeding difficulties; a small, triangular face with distinctive facial features; clinodactyly (curved finger); digestive system abnormalities; delayed development; and/or learning disabilities. The genetic causes of RSS are complex and relate to certain genes that control growth. Most cases are not inherited from a parent and occur sporadically. In rare cases, it may be inherited in an autosomal dominant or autosomal recessive manner. | |
What are the symptoms of Russell-Silver syndrome ? | What are the signs and symptoms of Russell-Silver syndrome? Signs and symptoms of Russell-Silver syndrome (RSS) can vary and may include: intrauterine growth restriction low birth weight poor growth short stature curving of the pinky finger (clinodactyly) characteristic facial features (wide forehead; small, triangular face; and small, narrow chin) arms and legs of different lengths cafe-au-lait spots (birth marks) delayed bone age gastroesophageal reflux disease kidney problems "stubby" fingers and toes developmental delay learning disabilities The Human Phenotype Ontology provides the following list of signs and symptoms for Russell-Silver syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Blue sclerae 90% Clinodactyly of the 5th finger 90% Decreased body weight 90% Downturned corners of mouth 90% Intrauterine growth retardation 90% Short stature 90% Triangular face 90% Asymmetric growth 50% Delayed skeletal maturation 50% Hypoglycemia 50% Thin vermilion border 50% Abnormality of the cardiovascular system 7.5% Abnormality of the urinary system 7.5% Cognitive impairment 7.5% Precocious puberty 7.5% Abnormality of the foot - Abnormality of the ureter - Cafe-au-lait spot - Congenital posterior urethral valve - Craniofacial disproportion - Craniopharyngioma - Delayed cranial suture closure - Fasting hypoglycemia - Frontal bossing - Growth hormone deficiency - Hepatocellular carcinoma - Hypospadias - Nephroblastoma (Wilms tumor) - Short distal phalanx of the 5th finger - Short middle phalanx of the 5th finger - Small for gestational age - Sporadic - Syndactyly - Testicular seminoma - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What causes Russell-Silver syndrome ? | What causes Russell-Silver syndrome? Russell-Silver syndrome (RSS) is a genetic disorder that usually results from the abnormal regulation of certain genes that control growth. Two genetic causes have been found to result in the majority of cases: abnormalities at an imprinted region on chromosome 11p15 - for some genes, only the copy inherited from a person's father (paternal copy) or mother (maternal copy) is "turned on," or expressed. These parent-specific differences in gene expression are caused by a phenomenon called genomic imprinting. Abnormalities involving genes that undergo imprinting are responsible for many cases of RSS. maternal disomy of chromosome 7 (written as matUPD7) - this occurs when a child inherits both copies of chromosome 7 from the mother, instead of one copy from the mother and one copy from the father. Other chromosome abnormalities involving any of several chromosomes have also been described as causing RSS, or RSS-like syndromes. In some people with RSS, the underlying cause remains unknown. | |
Is Russell-Silver syndrome inherited ? | Is Russell-Silver syndrome inherited? Most cases of Russell-Silver syndrome (RSS) are sporadic (not inherited), which means they occur in people with no family history of RSS. Less commonly, Russell-Silver syndrome is inherited. In some families, it appears to be inherited in an autosomal dominant manner. This means that having one "copy" of a genetic change in each cell is enough to cause the disorder. In some cases, an affected person inherits the genetic change from a parent. In other cases, the change occurs for the first time in an affected person. When a person with a genetic change that causes an autosomal dominant condition has children, each child has a 50% (1 in 2) chance to inherit the genetic change. In other families, the condition is inherited in an autosomal recessive manner. This means that to be affected, a person must have a change in both copies of the responsible gene in each cell. Affected people inherit one copy from each parent, who is referred to as a carrier. Carriers of an autosomal recessive condition typically do not have any signs or symptoms (they are unaffected). When 2 carriers of an autosomal recessive condition have children, each child has a: 25% (1 in 4) chance to be affected 50% (1 in 2) chance to be an unaffected carrier like each parent 25% chance to be unaffected and not be a carrier | |
What are the symptoms of Palant cleft palate syndrome ? | What are the signs and symptoms of Palant cleft palate syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Palant cleft palate syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Autosomal recessive inheritance - Bulbous nose - Cleft palate - Contracture of the proximal interphalangeal joint of the 4th finger - Contracture of the proximal interphalangeal joint of the 5th finger - Exaggerated cupid's bow - Intellectual disability, progressive - Intellectual disability, severe - Motor delay - Short stature - Upslanted palpebral fissure - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Jansen type metaphyseal chondrodysplasia ? | What are the signs and symptoms of Jansen type metaphyseal chondrodysplasia? The Human Phenotype Ontology provides the following list of signs and symptoms for Jansen type metaphyseal chondrodysplasia. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Craniofacial hyperostosis 90% Frontal bossing 90% Hypertelorism 90% Micromelia 90% Proptosis 90% Abnormality of calcium-phosphate metabolism 50% Brachydactyly syndrome 50% Clinodactyly of the 5th finger 50% Hypercalcemia 50% Hypoparathyroidism 50% Increased bone mineral density 50% Narrow chest 50% Sensorineural hearing impairment 7.5% Autosomal dominant inheritance - Bowing of the long bones - Brachycephaly - Choanal atresia - Choanal stenosis - Clubbing of fingers - Elevated alkaline phosphatase - Hip contracture - Hypercalciuria - Hyperphosphaturia - Hypophosphatemia - Knee flexion contracture - Metaphyseal chondrodysplasia - Metaphyseal cupping - Misalignment of teeth - Nephrocalcinosis - Osteopenia - Pathologic fracture - Prominent supraorbital arches in adult - Severe short stature - Short long bone - Short ribs - Thick skull base - Waddling gait - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Tetrahydrobiopterin deficiency ? | Tetrahydrobiopterin (BH4) deficiency is a neurological condition caused by an inborn error of metabolism. BH4 is a substance in the body that enhances the action of other enzymes. Deficiency of BH4 leads to abnormally high blood levels of the amino acid phenylalanine, and low levels of certain neurotransmitters. Signs and symptoms can range from very mild to severe. Affected newborns appear normal at birth, but may begin to experience neurological symptoms such as abnormal muscle tone; poor sucking and coordination; seizures; and delayed motor development. Without early, appropriate treatment, the condition can cause permanent intellectual disability and even death. BH4 deficiency is caused by mutations in any one of several genes including the GCH1, PCBD1, PTS, and QDPR genes. It is inherited in an autosomal recessive manner.Treatment depends on the genetic cause and severity, and may include a low phenylalanine diet; oral BH4 supplementation; and neurotransmitter replacement. | |
What are the symptoms of Tetrahydrobiopterin deficiency ? | What are the signs and symptoms of Tetrahydrobiopterin deficiency? Infants with tetrahydrobiopterin (BH4) deficiency typically appear normal and healthy at birth. Neurological signs and symptoms usually become apparent over time, and can range from mild to severe. These may include abnormal muscle tone; poor sucking and coordination; seizures; and delayed motor development. Other manifestations may include decreased spontaneous movements and difficulty swallowing. Without early and appropriate treatment, signs and symptoms progress and affected individuals may experience irreversible intellectual disability, behavioral problems, an inability to control body temperature, and even death in severe cases. The Human Phenotype Ontology provides the following list of signs and symptoms for Tetrahydrobiopterin deficiency. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Cognitive impairment 90% Microcephaly 90% Abnormality of eye movement - Ataxia - Autosomal recessive inheritance - Bradykinesia - Cerebral calcification - Choreoathetosis - Dysphagia - Dystonia - Episodic fever - Excessive salivation - Hyperkinesis - Hyperphenylalaninemia - Hyperreflexia - Hypertonia - Infantile onset - Intellectual disability - Intellectual disability, progressive - Irritability - Lethargy - Limb hypertonia - Motor delay - Muscular hypotonia - Muscular hypotonia of the trunk - Myoclonus - Parkinsonism - Poor suck - Progressive neurologic deterioration - Rigidity - Seizures - Severe muscular hypotonia - Small for gestational age - Somnolence - Transient hyperphenylalaninemia - Tremor - Variable expressivity - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Mutiple parosteal osteochondromatous proliferations ? | What are the signs and symptoms of Mutiple parosteal osteochondromatous proliferations? The Human Phenotype Ontology provides the following list of signs and symptoms for Mutiple parosteal osteochondromatous proliferations. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the wrist 90% Multiple enchondromatosis 90% Tarsal synostosis 90% Autosomal dominant inheritance - Joint swelling - Osteochondroma - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Myelocerebellar disorder ? | What are the signs and symptoms of Myelocerebellar disorder? The Human Phenotype Ontology provides the following list of signs and symptoms for Myelocerebellar disorder. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Aplasia/Hypoplasia of the cerebellum 90% Gait disturbance 90% Incoordination 90% Abnormality of macrophages 50% Abnormality of neutrophils 50% Acute leukemia 50% Anemia 50% Hyperreflexia 50% Neurological speech impairment 50% Nystagmus 50% Recurrent respiratory infections 50% Splenomegaly 50% Abnormality of thrombocytes 7.5% Decreased antibody level in blood 7.5% Microcephaly 7.5% Acute myelomonocytic leukemia - Ataxia - Autosomal dominant inheritance - Cerebellar atrophy - Decreased nerve conduction velocity - Dysmetria - Hyperactive deep tendon reflexes - Hypoplastic anemia - Impaired vibration sensation in the lower limbs - Pancytopenia - Unsteady gait - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Waardenburg syndrome type 2B ? | What are the signs and symptoms of Waardenburg syndrome type 2B? The Human Phenotype Ontology provides the following list of signs and symptoms for Waardenburg syndrome type 2B. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the face - Heterochromia iridis - Premature graying of hair - Sensorineural hearing impairment - White forelock - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Fingerprint body myopathy ? | What are the signs and symptoms of Fingerprint body myopathy? The Human Phenotype Ontology provides the following list of signs and symptoms for Fingerprint body myopathy. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of metabolism/homeostasis - Myopathy - X-linked inheritance - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Battaglia-Neri syndrome ? | What are the signs and symptoms of Battaglia-Neri syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Battaglia-Neri syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Coarse facial features 90% Cognitive impairment 90% Delayed skeletal maturation 90% Hypertrichosis 90% Microcephaly 90% Scoliosis 90% Seizures 90% Autosomal recessive inheritance - Hirsutism - Intellectual disability - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Hypocalcemia, autosomal dominant ? | What are the signs and symptoms of Hypocalcemia, autosomal dominant? The Human Phenotype Ontology provides the following list of signs and symptoms for Hypocalcemia, autosomal dominant. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Behavioral abnormality 90% EMG abnormality 90% Flexion contracture 90% Hypercalciuria 90% Hypocalcemia 90% Involuntary movements 90% Paresthesia 90% Abdominal pain 50% Abnormal pattern of respiration 50% Abnormality of the fingernails 50% Alopecia 50% Arrhythmia 50% Dry skin 50% Hyperphosphatemia 50% Hypotension 50% Nephrolithiasis 50% Congestive heart failure 7.5% Eczema 7.5% Increased intracranial pressure 7.5% Irregular hyperpigmentation 7.5% Optic atrophy 7.5% Reduced bone mineral density 7.5% Reduced consciousness/confusion 7.5% The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Ulna hypoplasia with mental retardation ? | What are the signs and symptoms of Ulna hypoplasia with mental retardation? The Human Phenotype Ontology provides the following list of signs and symptoms for Ulna hypoplasia with mental retardation. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the fontanelles or cranial sutures 90% Abnormality of the ulna 90% Anonychia 90% Aplasia/Hypoplasia of the radius 90% Aplastic/hypoplastic toenail 90% Cognitive impairment 90% Elbow dislocation 90% Limitation of joint mobility 90% Micromelia 90% Muscular hypotonia 90% Short stature 90% Talipes 90% Ulnar deviation of finger 90% Abnormality of thumb phalanx 50% Preaxial foot polydactyly 50% Absent fingernail - Absent toenail - Autosomal recessive inheritance - Bilateral ulnar hypoplasia - Intellectual disability, profound - Limitation of knee mobility - Limited elbow movement - Talipes equinovarus - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Persistent genital arousal disorder ? | Persistent genital arousal disorder (PGAD) in men may be considered as the condition of priapism and unwanted ejaculatory fluids being released without any sexual interest. In women there is still no consensus about a formal definition, but some of the experts propose that in women it should be defined as a rare, unwanted, and intrusive sexual dysfunction associated with excessive and unremitting genital arousal and engorgement in the absence of sexual interest. The persistent genital arousal usually does not resolve with orgasm and causes personal distress. Features include excessive excitement or excessive genital (lubrication, swelling, and engorgement) or other somatic responses. Causes may be neurological (central or peripheral involving the pudendal nerve), related to medication, vascular, hormonal, psychological or others. Diagnosis of the cause is essential for an adequate patient management. The treatment may include avoiding offending medications, using medications that stabilize nerve transmission and/or effect mood, local topical anesthetic agents, ice and hormonal replacement. More recently PGAD has being described as one component of a broader Restless Genital Syndrome if the PGAD was also associated with urinary frequency/urgency and restless leg syndrome. | |
What is (are) Coccygodynia ? | Coccygodynia is a rare condition in that causes pain in and around the coccyx (tailbone). Although various causes have been described for the condition, the more common causes are direct falls and injury. | |
What are the symptoms of Coccygodynia ? | What signs and symptoms are associated with coccygodynia? The classic symptom is pain when pressure is applied to the tailbone, such as when sitting on a hard chair. Symptoms usually improve with relief of pressure when standing or walking . Other symptoms include : Immediate and severe pain when moving from sitting to standing Pain during bowel movements Pain during sex Deep ache in the region of the tailbone | |
What causes Coccygodynia ? | What causes coccygodynia? A number of different causes have been associated with coccygodynia. However, the most common cause is a direct fall and injury to the area of the sacrum and coccyx. These types of injuries can occur from various activities, examples include a kick, an injury on a trampoline when one hits the bar or springs that surround the trampoline jumping pad, or from falling from a horse or skis. Another common cause, exclusive to women, is childbirth. The other most common cause of the condition is pregnancy. During the last three months of pregnancy, certain hormones are released in the women's body causing the area between the sacrum and the coccyx to soften and become more mobile. The increased mobility may result in permanent stretching and change and causing inflammation of the tissues surrounding the coccyx. In about one third of all cases of coccygodynia, the cause is unknown. Other less common causes include nerve damage, cysts such as Tarlov cysts, obesity, and a bursitis like condition that can arise in slim patients who have little buttocks fat padding. | |
What are the treatments for Coccygodynia ? | What treatment is available for coccygodynia? Treatment for coccygodynia generally falls into conservative management or surgical intervention categories. The conservative approach typically includes hot sitz baths, NSAIDs, stool softeners, and/or the use of a donut-shaped pillow or gel cushion to descrease pressure and irritation of the coccyx. If these treatment options fails, glucocorticoid injections may be used in an attempt to reduce the pain. Massage therapy has also been used to help decrease pain, but most studies have shown that the relief experienced from this form of therapy is temporary. The more aggressive and rare approach involves either partial or complete removal of the coccyx (coccygectomy). | |
What are the symptoms of 3 alpha methylcrotonyl-CoA carboxylase 2 deficiency ? | What are the signs and symptoms of 3 alpha methylcrotonyl-CoA carboxylase 2 deficiency? The Human Phenotype Ontology provides the following list of signs and symptoms for 3 alpha methylcrotonyl-CoA carboxylase 2 deficiency. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Alopecia - Autosomal recessive inheritance - Hyperglycinuria - Ketoacidosis - Muscular hypotonia - Organic aciduria - Propionyl-CoA carboxylase deficiency - Seborrheic dermatitis - Skeletal muscle atrophy - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Mucopolysaccharidosis type IIIC ? | Mucopolysaccharidosis type IIIC (MPS IIIC) is an genetic disorder that makes the body unable to break down large sugar molecules called glycosaminoglycans (GAGs, formerly called mucopolysaccharides). Specifically, people with this condition are unable to break down a GAG called heparan sulfate. Affected individuals can have severe neurological symptoms, including progressive dementia, aggressive behavior, hyperactivity, seizures, deafness, loss of vision, and an inability to sleep for more than a few hours at a time. MPS IIIC results from the missing or altered enzyme acetyl-CoAlpha-glucosaminide acetyltransferase. This condition is inherited in an autosomal recessive manner. There is no specific treatment. Most people with MPS IIIC live into their teenage years; some live longer. | |
What are the symptoms of Mucopolysaccharidosis type IIIC ? | What are the signs and symptoms of Mucopolysaccharidosis type IIIC? The Human Phenotype Ontology provides the following list of signs and symptoms for Mucopolysaccharidosis type IIIC. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Coarse hair 90% Cognitive impairment 90% Hypertrichosis 90% Malabsorption 90% Mucopolysacchariduria 90% Otitis media 90% Sleep disturbance 90% Abnormal form of the vertebral bodies 50% Abnormality of the clavicle 50% Abnormality of the hip bone 50% Abnormality of the ribs 50% Cataract 50% Craniofacial hyperostosis 50% Developmental regression 50% Genu valgum 50% Hearing impairment 50% Hypertonia 50% Incoordination 50% Limitation of joint mobility 50% Myopia 50% Opacification of the corneal stroma 50% Scoliosis 50% Seizures 50% Umbilical hernia 50% Vocal cord paresis 50% Hepatomegaly 7.5% Splenomegaly 7.5% Asymmetric septal hypertrophy - Autosomal recessive inheritance - Cellular metachromasia - Coarse facial features - Dense calvaria - Diarrhea - Dolichocephaly - Dysostosis multiplex - Dysphagia - Growth abnormality - Heparan sulfate excretion in urine - Hernia - Hirsutism - Hyperactivity - Intellectual disability - Joint stiffness - Kyphoscoliosis - Loss of speech - Motor delay - Motor deterioration - Ovoid thoracolumbar vertebrae - Recurrent upper respiratory tract infections - Rod-cone dystrophy - Synophrys - Thickened ribs - Variable expressivity - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Limb-girdle muscular dystrophy type 2H ? | What are the signs and symptoms of Limb-girdle muscular dystrophy type 2H? The Human Phenotype Ontology provides the following list of signs and symptoms for Limb-girdle muscular dystrophy type 2H. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) EMG abnormality 90% Gait disturbance 90% Mask-like facies 90% Myopathy 90% Tall stature 50% Areflexia - Autosomal recessive inheritance - Calf muscle pseudohypertrophy - Centrally nucleated skeletal muscle fibers - Elevated serum creatine phosphokinase - EMG: myopathic abnormalities - Exercise-induced myalgia - Facial palsy - Gowers sign - Hyporeflexia - Increased variability in muscle fiber diameter - Muscular dystrophy - Neck flexor weakness - Pelvic girdle muscle atrophy - Pelvic girdle muscle weakness - Phenotypic variability - Quadriceps muscle weakness - Shoulder girdle muscle atrophy - Shoulder girdle muscle weakness - Slow progression - Waddling gait - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Currarino triad ? | Currarino triad or syndrome is an autosomal dominant hereditary condition which is characterized by the triad of sacral agenesis abnormalities (abnormally developed lower spine), anorectal malformation (most commonly in the form of anorectal stenosis) and presacral mass consisting of a teratoma, anterior sacral meningocele or both. However only 1 out of 5 cases of Currarino triad has all three abnormalities present. Currarino triad is considered a spectrum disorder with a wide variation in severity. Up to one-third of the patients are asymptomatic and may only be diagnosed during adulthood only on X-rays and ultrasound examinations that are performed for different reasons. Currarino triad is most often caused by mutations in the MNX1 gene. Treatment depends on the type and severity of abnormalities present, but may involve surgery. | |
What are the symptoms of Currarino triad ? | What are the signs and symptoms of Currarino triad? The Human Phenotype Ontology provides the following list of signs and symptoms for Currarino triad. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Aplasia/Hypoplasia of the sacrum 90% Presacral teratoma 90% Hemisacrum (S2-S5) 75% Bifid sacrum 22% Arteriovenous malformation 7.5% Bifid scrotum 7.5% Displacement of the external urethral meatus 7.5% Hypoplasia of penis 7.5% Lower limb asymmetry 7.5% Male pseudohermaphroditism 7.5% Abdominal distention - Anal atresia - Anal fistula - Anal stenosis - Anterior sacral meningocele - Autosomal dominant inheritance - Bicornuate uterus - Chronic constipation - Gastrointestinal obstruction - Horseshoe kidney - Incomplete penetrance - Neurogenic bladder - Perianal abscess - Rectovaginal fistula - Recurrent urinary tract infections - Septate vagina - Tethered cord - Urinary incontinence - Vesicoureteral reflux - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What causes Currarino triad ? | What causes Currarino triad? Currarino triad is caused by mutations in the MNX1 gene in nearly all familial and 30% of sporadic cases. These mutations in the gene are called loss of function mutations because the gene can no longer produce working (functional) protein. Less frequently, a complex phenotype of Currarino triad can be caused by microdeletions of 7q containing MNX1 (the long arm of chromosome 7 is missing a small piece of DNA which includes MNX1 and other genes). | |
Is Currarino triad inherited ? | How is Currarino triad inherited? Currarino triad is inherited in an autosomal dominant manner. This means that having a change (mutation) in only one copy of the MNX1 gene in each cell is enough to cause features of the condition. In some cases, an affected person inherits the mutated gene from an affected parent. In other cases, the mutation occurs for the first time in a person with no family history of the condition. This is called a de novo mutation. When a person with a mutation that causes an autosomal dominant condition has children, each child has a 50% (1 in 2) chance to inherit that mutation. A significant interfamilial (between different families) and intrafamilial (within the same family) variability in expression has been found without any definite correlation to the genetic mutations. This means in one family, a parent might only have one very mild feature of Currarino triad while one of their children might have severe forms of all three features and yet another child might have a mild form of one feature and a severe form of another. | |
What is (are) Tourette syndrome ? | Tourette syndrome is a complex neurological disorder that is characterized by repetitive, sudden, uncontrolled (involuntary) movements and sounds (vocalizations) called tics. Tourette syndrome is named for Georges Gilles de la Tourette, who first described this disorder in 1885. A variety of genetic and environmental factors likely play a role in causing Tourette syndrome. A small number of people with Tourette syndrome have been found to have mutations involving the SLITRK1 gene. The syndrome is believed to be linked to problems in certain areas of the brain, and the chemical substances (dopamine, serotonin, and norepinephrine) that help nerve cells talk to one another. It is estimated that about 1% of the population has Tourette syndrome. Many people with very mild tics may not be aware of them and never seek medical help. Tourette syndrome is four times as likely to occur in boys as in girls. Although Tourette syndrome can be a chronic condition with symptoms lasting a lifetime, most people with the condition experience their worst symptoms in their early teens, with improvement occurring in the late teens and continuing into adulthood. | |
What are the symptoms of Tourette syndrome ? | What are the signs and symptoms of Tourette syndrome? The early symptoms of Tourette syndrome are almost always noticed first in childhood, with the average onset between the ages of 3 and 9 years. Although the symptoms of Tourette syndrome vary from person to person and range from very mild to severe, the majority of cases fall into the mild category. The Human Phenotype Ontology provides the following list of signs and symptoms for Tourette syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Aggressive behavior - Attention deficit hyperactivity disorder - Autosomal dominant inheritance - Echolalia - Motor tics - Obsessive-compulsive behavior - Phonic tics - Self-mutilation - Sleep disturbance - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What causes Tourette syndrome ? | What causes Tourette syndrome? Although the cause of Tourette syndrome is unknown, current research points to abnormalities in certain brain regions (including the basal ganglia, frontal lobes, and cortex), the circuits that interconnect these regions, and the neurotransmitters (dopamine, serotonin, and norepinephrine) responsible for communication among nerve cells. Given the often complex presentation of Tourette syndrome, the cause of the disorder is likely to be equally complex. In many cases, there is a family history of tics, Tourette Syndrome, ADHD, OCD. In 2005, scientists discovered the first gene mutation that may cause some cases of Tourette syndrome. This gene, named SLITRK1, is normally involved with the growth of nerve cells and how they connect with other neurons. The mutated gene is located in regions of the brain (basal ganglia, cortex, and frontal lobes) previously identified as being associated with Tourette syndrome. | |
Is Tourette syndrome inherited ? | Is Tourette syndrome inherited? Evidence from twin and family studies suggests that Tourette syndrome is an inherited disorder. Although early family studies suggested an autosomal dominant mode of inheritance (an autosomal dominant disorder is one in which only one copy of the defective gene, inherited from one parent, is necessary to produce the disorder), more recent studies suggest that the pattern of inheritance is much more complex. Although there may be a few genes with substantial effects, it is also possible that many genes with smaller effects and environmental factors may play a role in the development of Tourette syndrome. Genetic studies also suggest that some forms of ADHD and OCD are genetically related to Tourette syndrome, but there is less evidence for a genetic relationship between Tourette syndrome and other neurobehavioral problems that commonly co-occur with Tourette syndrome. Due to the complex nature of Tourette syndrome inheritance, affected families and those at risk may benefit from consulting with a genetics professional. Information about how to locate a genetics professional is provided in the Living With section. | |
What are the treatments for Tourette syndrome ? | How might Tourette syndrome be treated? Many individuals with Tourette syndrome have mild symptoms and do not require medication. However, effective medications are available for those whose symptoms interfere with functioning. Neuroleptics are the most consistently useful medications for tic suppression; a number are available but some are more effective than others (for example, haloperidol and pimozide). Unfortunately, there is no one medication that is helpful to all people with Tourette syndrome, nor does any medication completely eliminate symptoms. In addition, all medications have side effects. Additional medications with demonstrated efficacy include alpha-adrenergic agonists such as clonidine and guanfacine. These medications are used primarily for hypertension but are also used in the treatment of tics. Effective medications are also available to treat some of the associated neurobehavioral disorders that can occur in patients with Tourette syndrome. Recent research shows that stimulant medications such as methylphenidate and dextroamphetamine can lessen ADHD symptoms in people with Tourette syndrome without causing tics to become more severe. However, the product labeling for stimulants currently contraindicates the use of these drugs in children with tics/Tourette syndrome and those with a family history of tics. For obsessive-compulsive symptoms that significantly disrupt daily functioning, the serotonin reuptake inhibitors (clomipramine, fluoxetine, fluvoxamine, paroxetine, and sertraline) have been proven effective in some individuals. Behavioral treatment such as awareness training and competing response training can also be used to reduce tics. Psychotherapy may be helpful as well. It can help with accompanying problems, such as ADHD, obsessions, depression and anxiety. Therapy can also help people cope with Tourette syndrome. For debilitating tics that don't respond to other treatment, deep brain stimulation (DBS) may help. DBS consists of implanting a battery-operated medical device (neurostimulator) in the brain to deliver electrical stimulation to targeted areas that control movement. Further research is needed to determine whether DBS is beneficial for people with Tourette syndrome. | |
What are the symptoms of Oculomaxillofacial dysostosis ? | What are the signs and symptoms of Oculomaxillofacial dysostosis? The Human Phenotype Ontology provides the following list of signs and symptoms for Oculomaxillofacial dysostosis. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the eyelashes 50% Abnormality of the teeth 50% Aplasia/Hypoplasia of the eyebrow 50% Cleft palate 50% Facial cleft 50% Median cleft lip 50% Opacification of the corneal stroma 50% Short stature 50% Underdeveloped nasal alae 50% Upslanted palpebral fissure 50% Wide nasal bridge 50% Abnormality of the humerus 7.5% Adducted thumb 7.5% Aplasia/Hypoplasia affecting the eye 7.5% Brachydactyly syndrome 7.5% Camptodactyly of finger 7.5% Cognitive impairment 7.5% Coloboma 5% Deep palmar crease 5% Abnormality of the skeletal system - Autosomal recessive inheritance - Cleft upper lip - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Mitochondrial genetic disorders ? | Mitochondrial genetic disorders refer to a group of conditions that affect the mitochondria (the structures in each cell of the body that are responsible for making energy). People with these conditions can present at any age with almost any affected body system; however, the brain, muscles, heart, liver, nerves, eyes, ears and kidneys are the organs and tissues most commonly affected. Symptom severity can also vary widely. Mitochondrial genetic disorders can be caused by changes (mutations) in either the mitochondrial DNA or nuclear DNA that lead to dysfunction of the mitochondria and inadequate production of energy. Those caused by mutations in mitochondrial DNA are transmitted by maternal inheritance, while those caused by mutations in nuclear DNA may follow an autosomal dominant, autosomal recessive, or X-linked pattern of inheritance. Treatment varies based on the specific type of condition and the signs and symptoms present in each person. | |
What are the symptoms of Mitochondrial genetic disorders ? | What are the signs and symptoms of mitochondrial genetic disorders? People with mitochondrial genetic disorders can present at any age with almost any affected body system. While some conditions may only affect a single organ, many involve multiple organ systems including the brain, muscles, heart, liver, nerves, eyes, ears and/or kidneys. Symptom severity can also vary widely. The most common signs and symptoms include: Poor growth Loss of muscle coordination Muscle weakness Seizures Autism Problems with vision and/or hearing Developmental delay Learning disabilities Heart, liver, and/or kidney disease Gastrointestinal disorders Diabetes Increased risk of infection Thyroid and/or adrenal abnormalities Autonomic dysfunction Dementia The United Mitochondrial Disease Foundation's website features a comprehensive list of possible symptoms (click here to see this information) and symptoms categorized by type of mitochondrial genetic disorder (click here to access this page). | |
What causes Mitochondrial genetic disorders ? | What causes mitochondrial genetic disorders? Mitochondrial genetic disorders can be caused by changes (mutations) in either the mitochondrial DNA or nuclear DNA that lead to dysfunction of the mitochondria. Most DNA (hereditary material that is passed from parent to child) is packaged within the nucleus of each cell (known as nuclear DNA). However, mitochondria (the structures in each cell that produce energy) contain a small amount of their own DNA, which is known as mitochondrial DNA. When the mitochondria are not working properly, the body does not have enough energy to carry out its normal functions. This can lead to the variety of health problems associated with mitochondrial genetic disorders. | |
Is Mitochondrial genetic disorders inherited ? | Are mitochondrial genetic disorders inherited? Mitochondrial genetic disorder can be inherited in a variety of manners depending on the type of condition and the location of the disease-causing change (mutation). Those caused by mutations in mitochondrial DNA are transmitted by maternal inheritance. Only egg cells (not sperm cells) contribute mitochondria to the next generation, so only females can pass on mitochondrial mutations to their children. Conditions resulting from mutations in mitochondrial DNA can appear in every generation of a family and can affect both males and females. In some cases, the condition results from a new (de novo) mutation in a mitochondrial gene and occurs in a person with no history of the condition in the family. Mitochondrial genetic disorders caused by mutations in nuclear DNA may follow an autosomal dominant, autosomal recessive, or X-linked pattern of inheritance. In autosomal dominant conditions, one mutated copy of the responsible gene in each cell is enough to cause signs or symptoms of the condition. In some cases, an affected person inherits the mutation from an affected parent. Other cases may result from new mutations in the gene. These cases occur in people with no history of the disorder in their family. A person with an autosomal dominant condition has a 50% chance with each pregnancy of passing along the altered gene to his or her child. When a condition is inherited in an autosomal recessive manner, a person must have a change in both copies of the responsible gene in each cell. The parents of an affected person usually each carry one mutated copy of the gene and are referred to as carriers. Carriers typically do not show signs or symptoms of the condition. When two carriers of an autosomal recessive condition have children, each child has a 25% (1 in 4) risk to have the condition, a 50% (1 in 2) risk to be a carrier like each of the parents, and a 25% chance to not have the condition and not be a carrier. A condition is considered X-linked if the mutated gene that causes the condition is located on the X chromosome, one of the two sex chromosomes (the Y chromosome is the other sex chromosome). Women have two X chromosomes and men have an X and a Y chromosome. X-linked conditions can be X-linked dominant or X-linked recessive. The inheritance is X-linked dominant if one copy of the altered gene in each cell is sufficient to cause the condition. Women with an X-linked dominant condition have a 50% chance of passing the condition on to a son or a daughter with each pregnancy. Men with an X-linked dominant condition will pass the condition on to all of their daughters and none of their sons. The inheritance is X-linked recessive if a gene on the X chromosome causes the condition in men with one gene mutation (they have only one X chromosome) and in females with two gene mutations (they have two X chromosomes). A woman with an X-linked condition will pass the mutation on to all of her sons and daughters. This means that all of her sons will have the condition and all of her daughters will be carriers. A man with an X-linked recessive condition will pass the mutation to all of his daughters (carriers) and none of his sons. | |
How to diagnose Mitochondrial genetic disorders ? | How are mitochondrial genetic disorders diagnosed? Unfortunately, mitochondrial genetic disorders can be difficult to diagnose, and many affected people may never receive a specific diagnosis. They are often suspected in people who have a condition that effects multiple, unrelated systems of the body. In some cases, the pattern of symptoms may be suggestive of a specific mitochondrial condition. If the disease-causing gene(s) associated with the particular condition is known, the diagnosis can then be confirmed with genetic testing. If a mitochondrial genetic disorder is suspected but the signs and symptoms do not suggest a specific diagnosis, a more extensive work-up may be required. In these cases, a physician may start by evaluating the levels of certain substances in a sample of blood or cerebrospinal fluid. Other tests that can support a diagnosis include: Exercise testing Magnetic resonance spectroscopy (detects abnormalities in the brain's chemical makeup) Imaging studies of the brain such as MRI or CT scan Electroencephalography (EEG) Tests that evaluate the heart including electrocardiography and echocardiography Muscle biopsy When possible, confirming a diagnosis with genetic testing can have important implications for family members. Identifying the disease-causing gene(s) will give the family information about the inheritance pattern and the risk to other family members. It will also allow other at-risk family members to undergo genetic testing. For more information regarding the diagnosis of mitochondrial genetic disorders, please visit the United Mitochondrial Disease Foundation's "Getting a Diagnosis" Web page. GeneReviews also provides information on establishing a diagnosis of a mitochondrial disorder. Click on the link to view the article on this topic. | |
What are the treatments for Mitochondrial genetic disorders ? | How might mitochondrial genetic disorders be treated? Treatment for mitochondrial genetic disorders varies significantly based on the specific type of condition and the signs and symptoms present in each person. The primary aim of treatment is to alleviate symptoms and slow the progression of the condition. For example, a variety of vitamins and other supplements have been used to treat people affected by mitochondrial conditions with varying degrees of success. Other examples of possible interventions include medications to treat diabetes mellitus, surgery for cataracts, and cochlear implantation for hearing loss. For more general information about the treatment of mitochondrial genetic disorders, please visit GeneReviews. | |
What are the symptoms of Ichthyosis prematurity syndrome ? | What are the signs and symptoms of Ichthyosis prematurity syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Ichthyosis prematurity syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Ichthyosis 90% Premature birth 90% The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Ring chromosome 8 ? | What are the signs and symptoms of Ring chromosome 8? The Human Phenotype Ontology provides the following list of signs and symptoms for Ring chromosome 8. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the palate 90% Abnormality of the ureter 90% Anteverted nares 90% Cognitive impairment 90% Deviation of finger 90% Epicanthus 90% Frontal bossing 90% High forehead 90% Low posterior hairline 90% Polyhydramnios 90% Round ear 90% Short nose 90% Sloping forehead 90% The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Membranous nephropathy ? | Membranous nephropathy is a kidney disease characterized by inflammation of the structures inside the kidney that help filter wastes and fluids. When the glomerular basement membrane becomes thickened, it does not work normally, allowing large amounts of protein to be lost in the urine. Symptoms develop gradually and may include swelling, fatigue, weight gain, and high blood pressure. In many cases, the underlying cause of membranous nephropathy is not known. Some cases are associated with other conditions (lupus), infections (hepatitis B and C), cancer or as a side effect of certain medications. The goal of treatment is to reduce symptoms and slow the progression of the disease. | |
What is (are) Virus associated hemophagocytic syndrome ? | Virus associated hemophagocytic syndrome is a very serious complication of a viral infection. Signs and symptoms of virus associated hemophagocytic syndrome, include high fever, liver problems, enlarged liver and spleen, coagulation factor abnormalities, decreased red or white blood cells and platelets (pancytopenia), and a build-up of histiocytes, a type of immune cell, in various tissues in the body resulting in the destruction of blood-producing cells (histiocytic proliferation with prominent hemophagocytosis). Diagnosis is based upon the signs and symptoms of the patient. The cause of the condition is not known. Treatment is challenging and approach will vary depending on the age and medical history of the patient. Complications of this syndrome can become life threatening. Related conditions (conditions with overlapping signs and symptoms), include histiocytic medullary reticulosis (HMR), familial hemophagocytic lymphohistiocytosis (FHL), and X-linked lymphoproliferative syndrome. | |
What are the symptoms of WT limb blood syndrome ? | What are the signs and symptoms of WT limb blood syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for WT limb blood syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the metacarpal bones 90% Anemia 90% Aplasia/Hypoplasia of the thumb 90% Abnormality of leukocytes 50% Abnormality of the ulna 50% Camptodactyly of finger 50% Clinodactyly of the 5th finger 50% Elbow dislocation 50% Lymphoma 50% Thrombocytopenia 50% Abnormality of the wrist 7.5% Brachydactyly syndrome 7.5% Cryptorchidism 7.5% Finger syndactyly 7.5% Single transverse palmar crease 7.5% Absent thumb - Autosomal dominant inheritance - Hypoplastic anemia - Irregular hyperpigmentation - Joint contracture of the 5th finger - Leukemia - Pancytopenia - Radioulnar synostosis - Retrognathia - Sensorineural hearing impairment - Short phalanx of finger - Short thumb - Ulnar deviation of the 3rd finger - Ulnar deviation of thumb - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Glycogen storage disease type 12 ? | What are the signs and symptoms of Glycogen storage disease type 12? The Human Phenotype Ontology provides the following list of signs and symptoms for Glycogen storage disease type 12. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Intellectual disability 7.5% Myopathy 7.5% Autosomal recessive inheritance - Cholecystitis - Cholelithiasis - Delayed puberty - Epicanthus - Jaundice - Low posterior hairline - Nonspherocytic hemolytic anemia - Normochromic anemia - Normocytic anemia - Ptosis - Short neck - Short stature - Splenomegaly - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Spondyloepiphyseal dysplasia congenita ? | Spondyloepiphyseal dysplasia congenita is an inherited disorder of bone growth that affects the bones of the spine and ends of the long bones in the arms and legs. Features of this condition include short stature (dwarfism); a very short trunk and neck; abnormal curvature of the spine; barrel-shaped chest; shortened limbs; an abnormality of the hip joint; and problems with vision and hearing. Arthritis and decreased joint mobility often develop early in life. More than 175 cases have been reported in the scientific literature. This condition is caused by mutations in the COL2A1 gene and is inherited in an autosomal dominant pattern. Most cases result from new mutations in the gene and occur in people with no family history of the condition. | |
What are the symptoms of Spondyloepiphyseal dysplasia congenita ? | What are the signs and symptoms of Spondyloepiphyseal dysplasia congenita? The Human Phenotype Ontology provides the following list of signs and symptoms for Spondyloepiphyseal dysplasia congenita. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormal form of the vertebral bodies 90% Abnormality of epiphysis morphology 90% Micromelia 90% Narrow chest 90% Short neck 90% Short stature 90% Short thorax 90% Skeletal dysplasia 90% Broad forehead 50% Cleft palate 50% Hyperlordosis 50% Hypertelorism 50% Malar flattening 50% Osteoarthritis 50% Talipes 50% Cataract 7.5% Glaucoma 7.5% Hearing impairment 7.5% Kyphosis 7.5% Myopia 7.5% Nystagmus 7.5% Retinal detachment 7.5% Scoliosis 7.5% Autosomal dominant inheritance - Barrel-shaped chest - Cervical myelopathy - Coxa vara - Delayed calcaneal ossification - Delayed pubic bone ossification - Flat face - Flattened epiphysis - Hip dislocation - Hypoplasia of the odontoid process - Limitation of knee mobility - Limited elbow movement - Limited hip movement - Lumbar hyperlordosis - Muscular hypotonia - Neonatal short-trunk short stature - Ovoid vertebral bodies - Pectus carinatum - Platyspondyly - Respiratory distress - Restrictive lung disease - Spondyloepiphyseal dysplasia - Talipes equinovarus - Vitreoretinal degeneration - Waddling gait - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
Is Spondyloepiphyseal dysplasia congenita inherited ? | How is spondyloepiphyseal dysplasia congenita inherited? Spondyloepiphyseal dysplasia (SEDC) is typically inherited in an autosomal dominant manner. This means that one altered (mutated) gene in each cell is sufficient to cause the disorder. Most cases of SEDC do not result from inheriting it from a parent, however; the condition more commonly results from a random, new mutation in the gene occurring for the first time in an affected individual who does not have a history SEDC in the family. In most of these cases, the risk to have another child with the condition is comparable to the risk for an individual in the general population to have a child with the condition. A few cases of autosomal recessive forms of SEDC have been reported. Germline mosaicism has also been reported for this condition. In this case, the parent does not have the mutated gene in all the cells of the body (and is not affected), but only in some of the germ cells (sperm or egg cells). The recurrence risk for a parent with germline mosaicism to have another affected child is difficult to predict. For conditions with autosomal dominant inheritance, studies have demonstrated that the risk to have another affected child may be low (about 1%), moderate (about 6%), or higher (about 30%), depending on the proportion of germ cells with the mutation as well as the disorder itself. | |
What is (are) Hereditary angiopathy with nephropathy, aneurysms, and muscle cramps syndrome ? | Hereditary angiopathy with nephropathy, aneurysms, and muscle cramps (HANAC) syndrome is a genetic condition that causes blood vessels to become fragile. Signs and symptoms include muscle cramps, Raynaud phenomenon, kidney cysts, blood in the urine (typically not visible to the eye), leukoencephalopathy (a change in brain tissue that can be seen on MRI), arteries in the back of the eye that twist and turn abnormally, headaches, and supraventricular arrhythmia. These signs and symptoms do not often cause serious complications, however temporary vision loss due to bleeding in the back of the eye, minor ischemic stroke, and bleeding complications with blood thinner use has been described. While muscle cramps may begin in childhood, many of the other symptoms do not appear until later in life. HANAC syndrome is caused by mutations in the COL4A1 gene. It is passed through families in a autosomal dominant fashion. | |
What are the symptoms of Hereditary angiopathy with nephropathy, aneurysms, and muscle cramps syndrome ? | What are the signs and symptoms of Hereditary angiopathy with nephropathy, aneurysms, and muscle cramps syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Hereditary angiopathy with nephropathy, aneurysms, and muscle cramps syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Stroke 5% Autosomal dominant inheritance - Cerebral aneurysm - Hematuria - Leukoencephalopathy - Muscle cramps - Nephropathy - Renal cyst - Renal insufficiency - Retinal arteriolar tortuosity - Retinal hemorrhage - Supraventricular arrhythmia - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the treatments for Hereditary angiopathy with nephropathy, aneurysms, and muscle cramps syndrome ? | How might HANAC syndrome be treated? In order to know how HANAC syndrome is affecting you, your doctor may recommend that you undergo a series of imaging tests of the brain and kidney, an eye exam, and blood tests (e.g., serum CK concentration). While there is not a targeted treatment for HANAC syndrome, treatments are available to manage its signs and symptoms, such as drugs to reduce high blood pressure, manage headaches, and treat arrhythmia. People with HANAC syndrome may be regularly monitored (e.g., once a year) for signs and symptoms. In order to reduce the risk for health complications, your doctor may advise you to avoid smoking, activities that can cause head trauma, and blood thinners (anticoagulants). | |
What is (are) Charcot-Marie-Tooth disease type 2F ? | Charcot-Marie-Tooth disease type 2F (CMT2F) is a genetic disorder of the peripheral nerves. The subtypes of CMT type 2 (including type 2F) have similar features and are distinguished only by their disease-causing genes. Signs and symptoms usually begin between the ages of 5 and 25 and typically include slowly progressive weakness and atrophy of distal muscles in the feet and/or hands, usually associated with decreased tendon reflexes and mild or no sensory loss. Nerve conduction velocities are usually normal or near-normal. CMT2F is caused by mutations in the HSPB1 gene and is inherited in an autosomal dominant manner. Management may include occupational and physical therapy; special shoes; surgery as needed; mobility aids; and other supportive treatments. | |
What are the symptoms of Charcot-Marie-Tooth disease type 2F ? | What are the signs and symptoms of Charcot-Marie-Tooth disease type 2F? The subtypes of Charcot-Marie-Tooth type 2, including type 2F, have similar signs and symptoms. Affected individuals usually become symptomatic between the ages of 5 and 25, though onset can range from infancy to after the third decade of life. The most common first symptom is weakness of the feet and ankles, followed by slowly progressive weakness and atrophy of distal muscles in the feet and/or hands. Individuals often have decreased tendon reflexes and mild or no sensory loss. Adults with CMT2 often have bilateral foot drop, symmetric atrophy of muscles below the knee (stork leg appearance) and absent tendon reflexes in the legs. Mild sensory deficits of position, vibration, pain or temperature may occur in the feet, or sensation may be intact. Pain (especially in the feet) is reported by about 20%-40% of affected individuals. Other features that may be associated with CMT2 in a few individuals include hearing impairment; vocal cord or phrenic nerve involvement (which may result in difficulty with speech or breathing); restless legs; and sleep apnea. CMT2 is progressive over many years, but affected individuals often experience long periods without obvious progression. In some individuals, the condition may be so mild that it goes unrecognized. Affected individuals have a normal life span. The Human Phenotype Ontology provides the following list of signs and symptoms for Charcot-Marie-Tooth disease type 2F. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Areflexia - Autosomal dominant inheritance - Chronic axonal neuropathy - Decreased motor nerve conduction velocity - Distal amyotrophy - Distal muscle weakness - Distal sensory impairment - Fasciculations - Foot dorsiflexor weakness - Hyporeflexia - Muscle cramps - Pes cavus - Steppage gait - Ulnar claw - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What causes Charcot-Marie-Tooth disease type 2F ? | What causes Charcot-Marie-Tooth disease type 2F? Charcot-Marie-Tooth disease type 2F (CMT2F) is caused by mutations in the HSPB1 gene. This gene provides instructions for making a protein (heat shock protein beta-1) which helps protect cells under adverse conditions. Heat shock proteins appear to be involved in activities such as cell movement, stabilizing the cell's framework, folding and stabilizing new proteins, repairing damaged proteins, and muscle contraction. Heat shock protein beta-1 is particularly abundant in nerve and muscle cells. In nerve cells, it helps to organize a network of threads that maintain the diameter of axons (neurofilaments), which are needed to transmit nerve impulses efficiently. It is unclear exactly how HSPB1 mutations lead to the axon abnormalities characteristic of CMT2F. Researchers suggest that mutations lead to an altered protein which clusters together and interferes with nerve cell function. Another possibility is that the altered protein disrupts the assembly of neurofilaments, which in turn may impair the transmission of nerve impulses. | |
Is Charcot-Marie-Tooth disease type 2F inherited ? | How is Charcot-Marie-Tooth disease type 2F inherited? Charcot-Marie-Tooth disease type 2F is inherited in an autosomal dominant manner. This means that only one mutated copy of the gene in each cell is sufficient to cause the condition. Most affected individuals inherit the mutated gene from an affected parent, but in some cases the mutation occurs for the first time in the affected individual (de novo mutation). When an individual with an autosomal dominant condition has children, each child has a 50% (1 in 2) chance to inherit the mutated gene and have the condition. | |
How to diagnose Charcot-Marie-Tooth disease type 2F ? | Is genetic testing available for Charcot-Marie-Tooth disease type 2F? Yes. GeneTests lists the names of laboratories that are performing clincial genetic testing for Charcot-Marie-Tooth disease type 2F. To view the contact information for these laboratories, click here. Please note that most of the laboratories listed through GeneTests do not accept direct contact from patients and their families; therefore, if you are interested in learning more, you will need to work with a health care provider or a genetics professional. | |
What are the treatments for Charcot-Marie-Tooth disease type 2F ? | How might Charcot-Marie-Tooth disease type 2F be treated? Treatment for Charcot-Marie-Tooth disease type 2 mainly focuses on the specific symptoms present. Affected individuals are often managed by a team of various specialists that includes neurologists, physiatrists, orthopedic surgeons, and physical and occupational therapists. Depending on the individual's signs and symptoms, the following may be indicated: Special shoes, including those with good ankle support Ankle/foot orthoses (AFO) to correct foot drop and aid with walking Orthopedic surgery to correct severe pes cavus Forearm crutches or canes for stability (fewer than 5% of affected individuals need wheelchairs) Treatment of sleep apnea or restless legs Treatment of pain and depression as needed | |
What is (are) Hypokalemic periodic paralysis ? | Hypokalemic periodic paralysis is a condition that causes episodes of extreme muscle weakness typically beginning in childhood or adolescence. Most often, these episodes involve a temporary inability to move muscles in the arms and legs. The duration and frequency of the episodes may vary. Hypokalemic periodic paralysis is caused by mutations in the CACNA1S and SCN4A genes which are inherited in an autosomal dominant fashion. A small percentage of people with the characteristic features of hypokalemic periodic paralysis do not have identified mutations in these genes. In these cases, the cause of the condition is unknown. Paralytic crises can be treated with oral or IV potassium. Other management includes prevention of crises and support of specific symptoms. | |
What are the symptoms of Hypokalemic periodic paralysis ? | What are the signs and symptoms of Hypokalemic periodic paralysis? Hypokalemic periodic paralysis involves attacks of muscle weakness or loss of muscle movement (paralysis) that come and go. The weakness or paralysis is most commonly located in the shoulders and hips, affecting the muscles of the arms and legs. Muscles of the eyes and those that help you breathe and swallow may also be affected. There is normal muscle strength between attacks. Attacks usually begin in adolescence, but they can occur before age 10. How often the attacks occur varies. Some people have attacks every day, while others have them once a year. Episodes of muscle weakness usually last between a few hours and a day. Attacks can occur without warning or can be triggered by factors such as rest after exercise, a viral illness, or certain medications. Often, a large, carbohydrate-rich meal, alcohol, or vigorous exercise in the evening can trigger an attack upon waking the following morning. Although affected individuals usually regain their muscle strength between attacks, repeated episodes can lead to persistent muscle weakness later in life. People with hypokalemic periodic paralysis have reduced levels of potassium in their blood (hypokalemia) during episodes of muscle weakness. Researchers are investigating how low potassium levels may be related to the muscle abnormalities in this condition. The Human Phenotype Ontology provides the following list of signs and symptoms for Hypokalemic periodic paralysis. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Myopathy 7.5% Autosomal dominant inheritance - Episodic flaccid weakness - Hypokalemia - Incomplete penetrance - Periodic hyperkalemic paralysis - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What causes Hypokalemic periodic paralysis ? | What causes hypokalemic periodic paralysis? Hypokalemic periodic paralysis is caused by mutations in the CACNA1S and SCN4A genes. The CACNA1S and SCN4A genes provide instructions for making proteins that play an essential role in muscles used for movement (skeletal muscles). For the body to move normally, these muscles must tense (contract) and relax in a coordinated way. Muscle contractions are triggered by the flow of certain positively charged atoms (ions) into muscle cells. The CACNA1S and SCN4A proteins form channels that control the flow of these ions. The channel formed by the CACNA1S protein transports calcium ions into cells, while the channel formed by the SCN4A protein transports sodium ions. Mutations in the CACNA1S or SCN4A gene alter the usual structure and function of calcium or sodium channels. The altered channels cannot properly regulate the flow of ions into muscle cells, which reduces the ability of skeletal muscles to contract. Because muscle contraction is needed for movement, a disruption in normal ion transport leads to episodes of severe muscle weakness or paralysis. A small percentage of people with the characteristic features of hypokalemic periodic paralysis do not have identified mutations in the CACNA1S or SCN4A gene. In these cases, the cause of the condition is unknown. | |
Is Hypokalemic periodic paralysis inherited ? | How is hypokalemic periodic paralysis inherited? This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person has one parent with the condition. | |
How to diagnose Hypokalemic periodic paralysis ? | How is hypokalemic periodic paralysis diagnosed? The diagnosis of hypokalemic periodic paralysis is based on a history of episodes of paralysis and low levels of potassium in the blood during attacks (less than 0.9 to 3.0 mmol/L), but not between attacks. An important part of the diagnosis is to rule out other potential causes, including myotonia, hyperthyroidism, and arrhythmia. Affected individuals typically have a family history consistent with autosomal dominant inheritance. Genetic testing is available for hypokalemic periodic paralysis. Of all individuals meeting diagnostic criteria for this condition, approximately 55 to 70 percent have mutations in the CACNA1S gene, and approximately 8 to 10 percent have mutations in the SCN4A gene. GeneTests lists the names of laboratories that perform clinical genetic testing of the CACNA1S and SCN4A genes for hypokalemic periodic paralysis. When a disease-causing mutation is identified in an affected individual, genetic testing can be performed for at-risk, asymptomatic family members. Please note: Most of the laboratories listed through GeneTests do not accept direct contact from patients and their families; therefore, if you are interested in learning more, you will need to work with a health care provider or a genetics professional. See below for a list of online resources that can assist you in locating a genetics professional near you. | |
What is (are) Weaver syndrome ? | Weaver syndrome is a rare condition that is characterized primarily by tall stature. Other signs and symptoms of the condition may include macrocephaly (unusually large head size); intellectual disability; distinctive facial features; camptodactyly (permanently bent digits) of the fingers and/or toes; poor coordination; soft and doughy skin; umbilical hernia; abnormal muscle tone; and a hoarse, low-pitched cry during infancy. Some studies also suggest that people affected by Weaver syndrome may have an increased risk of developing neuroblastoma. Weaver syndrome is usually caused by changes (mutations) in the EZH2 gene. Although the condition is considered autosomal dominant, most cases occur as de novo mutations in people with no family history of the condition. Treatment is based on the signs and symptoms present in each person. | |
What are the symptoms of Weaver syndrome ? | What are the signs and symptoms of Weaver syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Weaver syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormality of the fingernails 90% Accelerated skeletal maturation 90% Broad forehead 90% Cognitive impairment 90% Cutis laxa 90% Hypertelorism 90% Hypoplastic toenails 90% Long philtrum 90% Low-set, posteriorly rotated ears 90% Macrocephaly 90% Macrotia 90% Tall stature 90% Abnormality of thumb phalanx 50% Broad foot 50% Camptodactyly of finger 50% Deep philtrum 50% Fine hair 50% Hernia of the abdominal wall 50% Large hands 50% Limitation of joint mobility 50% Round face 50% Cryptorchidism 7.5% Finger syndactyly 7.5% Hypoplasia of penis 7.5% Joint hypermobility 7.5% Pes cavus 7.5% Sandal gap 7.5% Scoliosis 7.5% Talipes 7.5% Abnormally low-pitched voice - Absent septum pellucidum - Autosomal dominant inheritance - Behavioral abnormality - Broad thumb - Calcaneovalgus deformity - Camptodactyly - Chin dimple - Clinodactyly - Coxa valga - Deep-set nails - Delayed speech and language development - Depressed nasal bridge - Diastasis recti - Dilation of lateral ventricles - Dysarthria - Dysharmonic bone age - Epicanthus - Flared femoral metaphysis - Flared humeral metaphysis - Hydrocele testis - Hypertonia - Hypoplastic iliac wing - Inguinal hernia - Intellectual disability - Inverted nipples - Joint contracture of the hand - Kyphosis - Limited elbow extension - Limited knee extension - Mandibular prognathia - Muscular hypotonia - Overlapping toe - Prominent fingertip pads - Radial deviation of finger - Retrognathia - Seizures - Short fourth metatarsal - Short ribs - Slurred speech - Sparse hair - Spasticity - Strabismus - Talipes equinovarus - Thin nail - Umbilical hernia - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What are the symptoms of Anal sphincter dysplasia ? | What are the signs and symptoms of Anal sphincter dysplasia? The Human Phenotype Ontology provides the following list of signs and symptoms for Anal sphincter dysplasia. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Autosomal dominant inheritance - Chronic constipation - Encopresis - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common. | |
What is (are) Hemangioendothelioma ? | The term hemangioendothelioma describes several types of vascular neosplasms and includes both non-cancerous (benign) and cancerous (malignant) growths. The term has also been applied to those that show "borderline" behavior, intermediate between entirely benign hemangiomas and highly malignant angiosarcomas. Hemangioendotheliomas are caused by abnormal growth of blood vessel cells, although the exact underlying cause for the abnormal growth is unknown. They can also develop in an organ, such as the liver or lung. They usually grow slowly and can sometimes spread to other tissues in the body (metastasize). Examples of types of hemangioendotheliomas include spindle cell hemangioma; papillary intralymphatic (Dabska tumor); retiform; kaposiform; epithelioid; pseudomyogenic (epithelioid sarcoma-like hemangioendothelioma); and composite. Treatment depends on the type of hemangioendothelioma present but typically includes surgical excision (removal). | |
What are the treatments for Hemangioendothelioma ? | How might hemangioendothelioma be treated? Treatment for hemangioendothelioma may depend on the type of hemangioendothelioma present in the affected individual and the risk of recurrence or metastases. In most reported cases, surgical excision (removal) of the mass has been the only treatment. For spindle cell hemangioma, simple excision is reportedly curative; however, new growths develop in adjacent skin and soft tissues in 60% of affected individuals. For individuals with papillary intralymphatic angioendothelioma (PILA), excision of the involved lymph nodes, as well as the mass, has been recommended. Surgical excision is reportedly also the usual treatment for individuals with retiform hemangioendothelioma (although local recurrence with this type is common), epithelioid hemangioendothelioma, and composite hemangioendothelioma (with the exception of 1 case treated with interferon). Most individuals with pseudomyogenic hemangioendothelioma have been treated with simple excision, but a few individuals have also received post-surgical radiotherapy (RT). With regard to kaposiform hemangioendothelioma, some large lesions cannot be completely removed and may cause fatal complications due to the associated KasabachMerritt syndrome. In these cases, several medical therapies have been used, including systemic corticosteroids; alfa interferon; RT; embolization; and several other therapies, both alone and in various combinations. A study by Scott et al published in 2012 in the American Journal of Clinical Oncology evaluated the effectiveness of RT as either an alternative or adjunct to surgery. The authors stated that the effectiveness of definitive RT in the treatment of hemangioendothelioma in their study implies that radiation may be an acceptable alternative when surgical resection will compromise function or cosmetic result. They concluded that with no local recurrences and minimal risk of toxicity, their long-term data suggest that RT offers a highly effective management option for this disease. | |
What is (are) Clear cell renal cell carcinoma ? | Clear cell renal cell carcinoma is a cancer of the kidney. The name "clear cell" refers to the appearance of the cancer cells when viewed with a microscope.[5258] Clear cell renal cell carcinoma occurs when cells in the kidney quickly increase in number, creating a lump (mass). Though the exact cause of clear cell renal cell carcinoma is unknown, smoking, the excessive use of certain medications, and several genetic predisposition conditions (such as von Hippel Lindau syndrome) may contribute to the development of this type of cancer. Treatment often begins with surgery to remove as much of the cancer as possible, and may be followed by radiation therapy, chemotherapy, biological therapy, or targeted therapy. | |
What are the treatments for Clear cell renal cell carcinoma ? | What treatments for metastatic clear cell renal cell carcinoma are available in North America? There are several treatments for metastatic clear cell renal cell carcinoma available in North America. IL-2 and sunitinib - as well as the medications temsirolimus, bevacizumab with interferon therapy, pazopanib, and sorafenib - are approved by the Food and Drug Administration for the treatment of metastatic clear cell renal cell carcinoma. Because a cure for this disease has yet to be discovered, the National Cancer Institute suggests that individuals with metastatic clear cell renal cell carcinoma consider participation in a research study. IL-2 is offered as a treatment for this disease in some individuals because it has been shown to cause a complete disappearance of signs of this disease (remission) in 5% of treated patients. As IL-2 may cause toxic side effects, it is most appropriate for patients who are in excellent health. Sunitinib is offered because it has been shown to stabilize metastatic clear cell renal cell carcinoma by stopping the disease from getting worse. Individuals treated with sunitinib showed no change in their disease for an average of 11 months. | |
What is (are) 48,XXYY syndrome ? | 48,XXYY syndrome is a chromosomal condition, characterized by the presence of an extra X and Y chromosome in males, that causes medical and behavioral problems. 48,XXYY can be considered a variant of Klinefelter syndrome. Individuals with 48,XXYY are usually considerably tall with small testes that do not function normally leading to infertility. In addition, affected individuals have behavioral problems such as anxiety, aggressiveness, problems communicating, hyperactivity, depression, as well as general learning disabilities and intellectual impairment. Other medical probelms can include congenital heart defects, bone abnormalities, tremor, obesity, type 2 diabetes and/or respiratory problems. Patients have an essentially normal life expectancy but require regular medical follow-up. | |
What are the symptoms of 48,XXYY syndrome ? | What are signs and symptoms of 48,XXYY syndrome? 48,XXYY affects various body systems including disruption of male sexual development. Adolescent and adult males with this condition typically have small testes that do not produce enough testosterone, which is the hormone that directs male sexual development. A shortage of testosterone during puberty can lead to reduced facial and body hair, poor muscle development, low energy levels, and an increased risk for breast enlargement (gynecomastia). Because their testes do not function normally, males with 48, XXYY syndrome have an inability to father children (infertility). 48,XXYY syndrome can affect other parts of the body as well. Males with 48,XXYY syndrome are often taller than other males their age. They tend to develop a tremor that typically starts as a young adult and worsens with age. Dental problems are frequently seen with this condition; they include delayed appearance of the primary (baby) or secondary (adult) teeth, thin tooth enamel, crowded and/or misaligned teeth, and multiple cavities. As affected males get older, they may develop a narrowing of the blood vessels in the legs, called peripheral vascular disease. Peripheral vascular disease can cause skin ulcers to form. Affected males are also at risk for developing a type of clot called a deep vein thrombosis (DVT) that occurs in the deep veins of the legs. Additionally, males with 48,XXYY syndrome may have flat feet (pes planus), elbow abnormalities, allergies, asthma, type 2 diabetes, seizures, and congenital heart defects. Most males with 48,XXYY syndrome have some degree of difficulty with speech and language development. Learning disabilities, especially reading problems, are very common in males with this disorder. Affected males seem to perform better at tasks focused on math, visual-spatial skills such as puzzles, and memorization of locations or directions. Some boys with 48,XXYY syndrome have delayed development of motor skills such as sitting, standing, and walking that can lead to poor coordination. Affected males have higher than average rates of behavioral disorders, such as attention deficit hyperactivity disorder (ADHD); mood disorders, including anxiety and bipolar disorder; and/or autism spectrum disorders, which affect communication and social interaction. | |
What causes 48,XXYY syndrome ? | What causes 48,XXYY? 48,XXYY syndrome is a condition related to the X and Y chromosomes (the sex chromosomes). People normally have 46 chromosomes in each cell. Two of the 46 chromosomes, known as X and Y, are called sex chromosomes because they help determine whether a person will develop male or female sex characteristics. Females typically have two X chromosomes (46,XX), and males have one X chromosome and one Y chromosome (46,XY). 48,XXYY syndrome results from the presence of an extra copy of both sex chromosomes in each of a male's cells (48,XXYY). Extra copies of genes on the X chromosome interfere with male sexual development, preventing the testes from functioning normally and reducing the levels of testosterone. Many genes are found only on the X or Y chromosome, but genes in areas known as the pseudoautosomal regions are present on both sex chromosomes. Extra copies of genes from the pseudoautosomal regions of the extra X and Y chromosome contribute to the signs and symptoms of 48,XXYY syndrome; however, the specific genes have not been identified.[5209] | |
Is 48,XXYY syndrome inherited ? | Can 48,XXYY syndrome be inherited? | |
What is (are) Fetal retinoid syndrome ? | Fetal retinoid syndrome is a characteristic pattern of physical and mental birth defects that results from maternal use of retinoids during pregnancy. The most well known retinoid is isotretinoin (Accutane), a drug used to treat severe cystic acne. Birth defects associated with fetal retinoid syndrome include: hydrocephalus, microcephaly, intellectual disabilities, ear and eye abnormalities, cleft palate and other facial differences, and heart defects. Isotretinoin can cause these birth defects in the early weeks of pregnancy, even before a woman knows that she is pregnant. |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.