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What is (are) Lymphocytic vasculitis ? | Lymphocytic vasculitis is one of several skin conditions which are collectively referred to as cutaneous vasculitis. In lymphocytic vasculitis, white blood cells (lymphocytes) cause damage to blood vessels in the skin. This condition is thought to be caused by a number of factors, but the exact cause of most cases is not known. This disease can present with a variety of symptoms, depending on the size, location, and severity of the affected area. In a minority of patients, cutaneous vasculitis can be part of a more severe vasculitis affecting other organs in the body - this is known as systemic vasculitis. | |
What are the symptoms of Lymphocytic vasculitis ? | What are the signs and symptoms of Lymphocytic vasculitis? Lymphocytic vasculitis can cause a number of different symptoms. Hives, red or purplish discolored patches, a bump (nodule), or an open sore (ulcer) have all been described as symptoms of this condition. The size, location, and severity of symptoms varies widely among affected individuals. Additional symptoms may occur if the vasculitis also affects internal organs; this is known as systemic vasculitis. The symptoms of systemic vasculitis depend on which organs are affected and to what degree. The Human Phenotype Ontology provides the following list of signs and symptoms for Lymphocytic vasculitis. 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 - Autosomal dominant inheritance - Nodular inflammatory vasculitis - 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 Lymphocytic vasculitis ? | What causes lymphocytic vasculitis? Lymphocytic vasculitis is thought to be caused by a number of different factors, such as infection, trauma, drug reaction, or an underlying condition such as arthritis. Because this condition is rare and not yet well understood, it is believed that a full list of possible causes has yet to be assembled. | |
What is (are) Essential tremor ? | Essential tremor is the most common movement disorder. It is characterized by involuntary and rhythmic shaking (tremor), especially in the hands, without any other signs or symptoms. It is distinguished from tremor that results from other disorders or known causes, such as tremors seen with Parkinson disease or head trauma. Most cases of essential tremor are hereditary. There are five forms of essential tremor that are based on different genetic causes. Several genes as well as lifestyle and environmental factors likely play a role in a person's risk of developing this complex condition. In mild cases, treatment may not be necessary. In cases where symptoms interfere with daily living, medications may help to relieve symptoms. | |
What are the symptoms of Essential tremor ? | What are the signs and symptoms of Essential tremor? The Human Phenotype Ontology provides the following list of signs and symptoms for Essential tremor. 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 - Dysarthria - Hand tremor - Postural tremor - Progressive - 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 Essential tremor ? | What causes essential tremor? The causes of essential tremor are unknown. Researchers are studying several areas (loci) on particular chromosomes that may be linked to essential tremor, but no specific genetic associations have been confirmed. Several genes, as well as environmental factors, are likely involved in an individual's risk of developing this complex condition. | |
Is Essential tremor inherited ? | Is essential tremor inherited? About half of all cases of essential tremor appear to occur because of a genetic mutation. This is referred to as familial tremor. In these cases, essential tremor appears to be passed through generations in families, but the inheritance pattern varies. In many affected families, the condition appears to be inherited in an autosomal dominant manner, which means one copy of an altered gene in each cell is sufficient to cause the disorder. In other families, the inheritance pattern is unclear. Essential tremor may also appear in people with no history of the disorder in their family. In some families, there are individuals who have essential tremor while others have other movement disorders, such as involuntary muscle tensing (dystonia). The potential genetic connection between essential tremor and other movement disorders is an active area of research.. | |
What are the treatments for Essential tremor ? | How might essential tremor be treated? Treatment for essential tremor may not be necessary unless the tremors interfere with daily activities or cause embarrassment. Although there is no definitive cure for essential tremor, medicines may help relieve symptoms. How well medicines work depend on the individual patient. Two medications used to treat tremors include: Propranolol, a drug that blocks the action of stimulating substances called neurotransmitters, particularly those related to adrenaline Primidone, an antiseizure drug that also control the function of some neurotransmitters These drugs can have significant side effects. Eliminating tremor "triggers" such as caffeine and other stimulants from the diet is often recommended. Physical therapy may help to reduce tremor and improve coordination and muscle control for some patients. More details about the management of essential tremor can be accessed through the following web links: http://www.mayoclinic.com/print/essential-tremor/DS00367/METHOD=print&DSECTION=all http://emedicine.medscape.com/article/1150290-treatment | |
What are the symptoms of Spondylometaphyseal dysplasia corner fracture type ? | What are the signs and symptoms of Spondylometaphyseal dysplasia corner fracture type? The Human Phenotype Ontology provides the following list of signs and symptoms for Spondylometaphyseal dysplasia corner fracture type. 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 hip bone 90% Abnormality of the wrist 90% Hypoplasia of the odontoid process 90% Micromelia 90% Recurrent fractures 90% Short stature 90% Hyperlordosis 50% Abnormality of the metacarpal bones 7.5% Genu valgum 7.5% Kyphosis 7.5% Lower limb asymmetry 7.5% Pes planus 7.5% Scoliosis 7.5% Short distal phalanx of finger 7.5% Tetralogy of Fallot 7.5% Autosomal dominant inheritance - Coxa vara - Hyperconvex vertebral body endplates - Metaphyseal irregularity - Short femoral neck - Spondylometaphyseal dysplasia - 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) Linear porokeratosis ? | Linear porokeratosis is a skin condition that most often begins in infancy or early childhood, but it can occur at any age. The main feature of this condition is the development of reddish brown, slightly raised markings on the skin arranged in lines or streaks on one side of the body. These markings are not usually painful, though they can sometimes cause open sores in the skin. There is up to an 11% chance that these markings could progress to skin cancer (basal cell cancer or squamous cell carcinoma) over time. The exact cause of linear porokeratosis is unknown, but risk factors may include exposure to the sun or radiation, problems with the immune system (immunosuppression), or genetic predisposition. | |
What are the treatments for Linear porokeratosis ? | How might linear porokeratosis be treated? Because linear porokeratosis is a rare condition, there is no established treatment protocol. Protection from sun exposure and regular visits to a doctor to check for skin cancer are encouraged as routine care. Treatment options depend on the size, location, and severity of the characteristic skin markings. Several medications (5-fluorouracil, acitretin) have been shown to be effective for treating this condition in a small number of patients. We identified a single report of photodynamic therapy being used to successfully treat an individual with linear porokeratosis. Surgery is recommended to remove any skin cancer that may develop. | |
What are the symptoms of Hairy palms and soles ? | What are the signs and symptoms of Hairy palms and soles? The Human Phenotype Ontology provides the following list of signs and symptoms for Hairy palms and soles. 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 - Hypermelanotic macule - 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 Van Buchem disease type 2 ? | What are the signs and symptoms of Van Buchem disease type 2? The Human Phenotype Ontology provides the following list of signs and symptoms for Van Buchem disease type 2. 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 - Mandibular prognathia - Thickened calvaria - Thickened cortex of long bones - 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) Stickler syndrome, type 2 ? | Stickler syndrome is a group of hereditary connective tissue disorders characterized by distinctive facial features, eye abnormalities, hearing loss, and joint problems. The features vary widely among affected people. Stickler syndrome type 1 may be divided into 2 subgroups: the membranous vitreous type and a predominantly ocular type. Both are caused by mutations in the COL2A1 gene. Stickler syndrome type II, sometimes called the beaded vitreous type, is caused by mutations in the COL11A1 gene. Stickler syndrome type III, sometimes called the nonocular form, is caused by mutations in the COL11A2 gene. These forms of Stickler syndrome are inherited in an autosomal dominant manner. Stickler syndrome type IV is caused by mutations in the COL9A1 gene, and Stickler syndrome type V is caused by mutations in the COL9A2 gene. These types of Stickler syndrome are inherited in an autosomal recessive manner. | |
What are the symptoms of Stickler syndrome, type 2 ? | What are the signs and symptoms of Stickler syndrome, type 2? The Human Phenotype Ontology provides the following list of signs and symptoms for Stickler syndrome, type 2. 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 vitreous humor 90% Cataract 90% Myopia 90% Opacification of the corneal stroma 90% Retinal detachment 90% Sensorineural hearing impairment 90% Cleft palate 50% Retinopathy 50% Anteverted nares - Arachnodactyly - Arthropathy - Autosomal dominant inheritance - Bifid uvula - Depressed nasal bridge - Flat midface - Glaucoma - Joint hypermobility - Long fingers - Malar flattening - Pierre-Robin sequence - Spondyloepiphyseal dysplasia - 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 Popliteal pterygium syndrome lethal type ? | What are the signs and symptoms of Popliteal pterygium syndrome lethal type? The Human Phenotype Ontology provides the following list of signs and symptoms for Popliteal pterygium syndrome lethal type. 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% Abnormality of the eyelashes 90% Abnormality of the genital system 90% Abnormality of the palpebral fissures 90% Aplasia/Hypoplasia of the distal phalanges of the toes 90% Aplasia/Hypoplasia of the eyebrow 90% Finger syndactyly 90% Hypoplastic toenails 90% Median cleft lip 90% Microcephaly 90% Popliteal pterygium 90% Synostosis of joints 90% Talipes 90% Toe syndactyly 90% Trismus 90% Aplasia/Hypoplasia of the thumb 50% Cleft eyelid 50% Cognitive impairment 50% Narrow mouth 50% Opacification of the corneal stroma 50% Short nose 50% Underdeveloped nasal alae 50% Renal hypoplasia/aplasia 7.5% Alopecia totalis 5% Bilateral cryptorchidism 5% Cupped ear 5% Hypertelorism 5% Hypoplasia of the maxilla 5% Hypoplastic male external genitalia 5% Hypoplastic scapulae 5% Microphthalmia 5% Wide intermamillary distance 5% Absent eyebrow - Absent eyelashes - Absent thumb - Anal stenosis - Ankyloblepharon - Anonychia - Autosomal recessive inheritance - Cleft palate - Cleft upper lip - Facial cleft - Hypoplastic labia majora - Intrauterine growth retardation - Low-set ears - Short phalanx of finger - Small nail - 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 Westphal disease ? | What are the signs and symptoms of Westphal disease? The Human Phenotype Ontology provides the following list of signs and symptoms for Westphal disease. 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 50% Abnormality of the voice 50% Behavioral abnormality 50% Cerebral cortical atrophy 50% Developmental regression 50% EEG abnormality 50% Hypertonia 50% Rigidity 7.5% Abnormality of eye movement - Autosomal dominant inheritance - Bradykinesia - Chorea - Dementia - Depression - Gliosis - Hyperreflexia - Neuronal loss in central nervous system - Personality changes - 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 GTP cyclohydrolase I deficiency ? | What are the signs and symptoms of GTP cyclohydrolase I deficiency? The Human Phenotype Ontology provides the following list of signs and symptoms for GTP cyclohydrolase I 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) Abnormality of eye movement - Autosomal recessive inheritance - Choreoathetosis - Dysphagia - Dystonia - Episodic fever - Excessive salivation - Hyperkinesis - Hyperphenylalaninemia - Infantile onset - Intellectual disability, progressive - Irritability - Lethargy - Limb hypertonia - Progressive neurologic deterioration - Rigidity - Seizures - Severe muscular hypotonia - 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 Charcot-Marie-Tooth disease type 2G ? | What are the signs and symptoms of Charcot-Marie-Tooth disease type 2G? The Human Phenotype Ontology provides the following list of signs and symptoms for Charcot-Marie-Tooth disease type 2G. 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) Onion bulb formation 7.5% Areflexia - Autosomal recessive inheritance - Axonal degeneration/regeneration - Decreased motor nerve conduction velocity - Decreased number of peripheral myelinated nerve fibers - Distal amyotrophy - Distal muscle weakness - Distal sensory impairment - Flexion contracture - Neonatal onset - Pes cavus - Spinal deformities - Split hand - Vocal cord paresis - 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) Juvenile temporal arteritis ? | Juvenile temporal arteritis is a rare form of vasculitis, a group of conditions that cause inflammation of the blood vessels. Unlike the classic form of temporal arteritis, this condition is generally diagnosed in late childhood or early adulthood and only affects the temporal arteries (located at the lower sides of the skull, directly underneath the temple). Affected people often have no signs or symptoms aside from a painless nodule or lump in the temporal region. The exact underlying cause of the condition is unknown. It generally occurs sporadically in people with no family history of the condition. Juvenile temporal arteritis is often treated with surgical excision and rarely recurs. | |
What is (are) CADASIL ? | CADASIL (Cerebral Autosomal Dominant Arteriopathy with Sub-cortical Infarcts and Leukoencephalopathy) is an inherited disease of the blood vessels that occurs when the thickening of blood vessel walls blocks the flow of blood to the brain. The disease primarily affects the small blood vessels in the white matter of the brain. CADASIL is characterized by migraine headaches and multiple strokes, which progresses to dementia. Other symptoms include white matter lesions throughout the brain, cognitive deterioration, seizures, vision problems, and psychiatric problems such as severe depression and changes in behavior and personality. Individuals may also be at higher risk of heart attack. Symptoms and disease onset vary widely, with signs typically appearing in the mid-30s. Some individuals may not show signs of the disease until later in life. CADASIL is caused by a change (or mutation) in a gene called NOTCH3 and is inherited in an autosomal dominant manner. | |
What are the symptoms of CADASIL ? | What are the signs and symptoms of CADASIL? Strokes are the main feature of CADASIL and often occur repeatedly. Strokes may lead to severe disability such as an inability to walk and urinary incontinence. The average age at onset for stroke-like episodes is 46 years. A decline in thinking ability (cognitive deficit) is the second most common feature and occurs in over half of affected people. This may begin as early as 35 years of age. CADASIL typically causes a slow decline in thought processes, and approximately 75% of affected people eventually develop dementia (including significant difficulty with reasoning and memory). Thirty percent of people with CADASIL also experience psychiatric issues, varying from personality changes to severe depression. Migraines with aura occur in about 35% of people with CADASIL, with the first attack occurring at an average age of 26 years. Epilepsy is present in 10% of affected people and usually presents at middle age. The Human Phenotype Ontology provides the following list of signs and symptoms for CADASIL. 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 temperature regulation 90% Abnormality of the retinal vasculature 90% Amaurosis fugax 90% Behavioral abnormality 90% Developmental regression 90% Hemiplegia/hemiparesis 90% Migraine 90% Neurological speech impairment 90% Reduced consciousness/confusion 90% Cerebral cortical atrophy 50% Cerebral ischemia 50% Cranial nerve paralysis 50% EEG abnormality 50% Gait disturbance 50% Hypertonia 50% Memory impairment 50% Visual impairment 50% Abnormality of extrapyramidal motor function 7.5% Atherosclerosis 7.5% Hearing impairment 7.5% Hypertension 7.5% Hypoglycemia 7.5% Intracranial hemorrhage 7.5% Peripheral neuropathy 7.5% Recurrent respiratory infections 7.5% Seizures 7.5% Subcutaneous hemorrhage 7.5% Venous insufficiency 7.5% Visual loss 5% Abnormal electroretinogram - Abnormality of the skin - Abnormality of visual evoked potentials - Adult onset - Autosomal dominant inheritance - Leukoencephalopathy - Nonarteritic anterior ischemic optic neuropathy - Pseudobulbar paralysis - Recurrent subcortical infarcts - Stroke - Subcortical dementia - Urinary incontinence - Varicose veins - 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 CADASIL ? | What causes CADASIL? CADASIL is caused by a mutation in the NOTCH3 gene. The NOTCH3 gene gives the body instructions to make the Notch3 receptor protein, needed for normal function and survival of vascular smooth muscle cells. Mutations in NOTCH3 cause the body to make an abnormal protein, thus impairing the function and survival of vascular smooth muscle cells and causing these cells to self-destruct. The loss of vascular smooth muscle cells in the brain causes blood vessel damage that leads to the characteristic features of CADASIL. | |
Is CADASIL inherited ? | How is CADASIL inherited? CADASIL is inherited in an autosomal dominant manner. This means that having a mutation in only one copy of the responsible gene in each cell is enough to cause CADASIL. In most cases, an affected person inherits the mutated gene from an affected parent. In rare cases, CADASIL may result from having a new mutation in the gene, in which case it is not inherited from a parent. When a person with an autosomal dominant condition has children, each child has a 50% (1 in 2) chance to inherit the mutated copy of the gene. | |
What are the treatments for CADASIL ? | How might CADASIL be treated? There is currently no treatment for CADASIL that is proven to be effective. While antiplatelet treatment is often used, it is also not proven to be useful. Migraine should be treated both symptomatically and prophylactically (with preventative methods), depending on the frequency of symptoms. When hypertension, diabetes or hypercholesterolemia (high cholesterol) are also present, they should be treated. Supportive care, including practical help, emotional support, and counseling, is useful for affected people and their families. Smoking increases the risk of stroke, so affected people who smoke should quit. | |
What is (are) Miller syndrome ? | Miller syndrome is a rare condition that mainly affects the development of the face and limbs. Characteristic features include underdeveloped cheek bones, a very small lower jaw, cleft lip and/or palate, abnormalities of the eyes, absent fifth (pinky) fingers and toes, and abnormally formed bones in the forearms and lower legs. The severity of the disorder varies among affected individuals. Miller syndrome is caused by mutations in the DHODH gene. It is inherited in an autosomal recessive manner. | |
What are the symptoms of Miller syndrome ? | What are the signs and symptoms of Miller syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Miller 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 dermatoglyphics 90% Abnormality of the ulna 90% Aplasia/Hypoplasia of the radius 90% Cleft eyelid 90% Hypoplasia of the zygomatic bone 90% Low-set, posteriorly rotated ears 90% Supernumerary nipple 90% Camptodactyly of finger 50% Conductive hearing impairment 50% Finger syndactyly 50% Non-midline cleft lip 50% Strabismus 7.5% Abnormality of the foot - Abnormality of the kidney - Autosomal recessive inheritance - Choanal atresia - Cleft palate - Cleft upper lip - Congenital hip dislocation - Conical tooth - Cryptorchidism - Cupped ear - Ectropion - Hypoplasia of the radius - Hypoplasia of the ulna - Low-set ears - Malar flattening - Micropenis - Midgut malrotation - Pectus excavatum - Postnatal growth retardation - Pyloric stenosis - Radioulnar synostosis - Short thumb - Supernumerary vertebrae - 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 is (are) Progressive myoclonic epilepsy ? | Progressive myoclonus epilepsy (PME) refers to a group of inherited conditions involving the central nervous system and representing more than a dozen different diseases. These diseases share certain features, including a worsening of symptoms over time and the presence of both muscle contractions (myoclonus) and seizures (epilepsy). PME is different from myoclonic epilepsy. Other features include dementia, dystonia, and trouble walking or speaking. These rare disorders often get worse over time and sometimes are fatal. Many of these PME diseases begin in childhood or adolescence. | |
What are the symptoms of Progressive supranuclear palsy atypical ? | What are the signs and symptoms of Progressive supranuclear palsy atypical? The Human Phenotype Ontology provides the following list of signs and symptoms for Progressive supranuclear palsy atypical. 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 pyramidal signs - Adult onset - Dementia - Kyphoscoliosis - Morphological abnormality of the pyramidal tract - Ophthalmoparesis - Parkinsonism - Rigidity - Tremor - 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 Dandy-Walker cyst with Renal-Hepatic-Pancreatic dysplasia ? | What are the signs and symptoms of Dandy-Walker cyst with Renal-Hepatic-Pancreatic dysplasia? The Human Phenotype Ontology provides the following list of signs and symptoms for Dandy-Walker cyst with Renal-Hepatic-Pancreatic 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) Dandy-Walker malformation 90% Multicystic kidney dysplasia 90% Abnormality of the liver 50% Abnormality of the pancreas 50% Aplasia/Hypoplasia of the lungs 50% Intestinal malrotation 50% Oligohydramnios 50% Polyhydramnios 50% Bile duct proliferation - 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 Genu valgum, st Helena familial ? | What are the signs and symptoms of Genu valgum, st Helena familial? The Human Phenotype Ontology provides the following list of signs and symptoms for Genu valgum, st Helena familial. 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 - Genu valgum - 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 Groenouw type I corneal dystrophy ? | What are the signs and symptoms of Groenouw type I corneal dystrophy? The Human Phenotype Ontology provides the following list of signs and symptoms for Groenouw type I corneal dystrophy. 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 - Cataract - Granular corneal dystrophy - Nodular corneal dystrophy - Punctate corneal dystrophy - Strabismus - 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 Male pseudohermaphroditism due to defective LH molecule ? | What are the signs and symptoms of Male pseudohermaphroditism due to defective LH molecule? The Human Phenotype Ontology provides the following list of signs and symptoms for Male pseudohermaphroditism due to defective LH molecule. 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 - Decreased testosterone in males - Male hypogonadism - Male infertility - Male pseudohermaphroditism - 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 Hydrocephalus, costovertebral dysplasia, and Sprengel anomaly ? | What are the signs and symptoms of Hydrocephalus, costovertebral dysplasia, and Sprengel anomaly? The Human Phenotype Ontology provides the following list of signs and symptoms for Hydrocephalus, costovertebral dysplasia, and Sprengel anomaly. 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) Hydrocephalus 90% Mandibular prognathia 90% Sprengel anomaly 90% Abnormal form of the vertebral bodies 50% Abnormality of dental enamel 50% Abnormality of the palate 50% Abnormality of the ribs 50% Anteverted nares 50% Behavioral abnormality 50% Brachydactyly syndrome 50% Cognitive impairment 50% Depressed nasal bridge 50% High forehead 50% Hypertelorism 50% Hypoplasia of the zygomatic bone 50% Low-set, posteriorly rotated ears 50% Macrocephaly 50% Melanocytic nevus 50% Obesity 50% Sandal gap 50% Scoliosis 50% Vertebral segmentation defect 50% Abnormality of the nipple 7.5% Myopia 7.5% Strabismus 7.5% Arachnoid cyst 5% Bulbous nose 5% Delayed gross motor development 5% Epicanthus 5% Hypoplasia of dental enamel 5% Intellectual disability 5% Low-set ears 5% Malar flattening 5% Wide nasal bridge 5% High palate - Kyphoscoliosis - Psychosis - 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 X-linked lymphoproliferative syndrome 1 ? | What are the signs and symptoms of X-linked lymphoproliferative syndrome 1? The Human Phenotype Ontology provides the following list of signs and symptoms for X-linked lymphoproliferative 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) Cellular immunodeficiency 90% Decreased antibody level in blood 50% Hepatomegaly 50% Lymphadenopathy 50% Lymphoma 50% Splenomegaly 50% Anemia 7.5% Encephalitis - Fulminant hepatitis - Hepatic encephalopathy - IgG deficiency - Immunodeficiency - Increased IgM level - Meningitis - Pancytopenia - Recurrent pharyngitis - Reduced natural killer cell activity - Thrombocytopenia - 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 De Sanctis-Cacchione syndrome ? | What are the signs and symptoms of De Sanctis-Cacchione syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for De Sanctis-Cacchione 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) Areflexia - Ataxia - Autosomal recessive inheritance - Cerebellar atrophy - Choreoathetosis - Conjunctivitis - Cutaneous photosensitivity - Defective DNA repair after ultraviolet radiation damage - Dermal atrophy - Ectropion - Entropion - Gonadal hypoplasia - Hyporeflexia - Intellectual disability - Keratitis - Mental deterioration - Microcephaly - Olivopontocerebellar atrophy - Photophobia - Poikiloderma - Sensorineural hearing impairment - Severe short stature - Spasticity - Telangiectasia - 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) Trisomy 17 mosaicism ? | Trisomy 17 mosaicism is a chromosomal abnormality in which there are three copies of chromosome 17 in some cells of the body, rather than the usual two copies. Trisomy 17 mosaicism is one of the rarest trisomies in humans. It is often incorrectly called trisomy 17 (also referred to as full trisomy 17), which is when three copies of chromosome 17 are present in all cells of the body. Full trisomy 17 has never been reported in a living individual in the medical literature. Few cases of trisomy 17 mosaicism have been described, most having been detected during pregnancy through a test called amniocentesis. Only a few individuals have had a confirmed diagnosis of trisomy 17 mosaicism after birth. Because the proportion and location of cells with trisomy 17 differs from case to case, the presence and severity of signs and symptoms may vary significantly from person to person. | |
What causes Trisomy 17 mosaicism ? | What causes trisomy 17 mosaicism? Trisomy 17 mosaicism can arise due to errors in cell division that occur after conception. For example, at the time of conception, the fetus may actually have trisomy 17 in all of its cells; however, during cell division, some of the cells lose the extra chromosome 17. Alternatively, the fetus may initially have had only two copies of chromosome 17, but due to errors in cell division some of the cells end up with an extra copy of chromosome 17. Either of these two scenarios result in trisomy 17 mosaicism. To read more about trisomy mosaicism, visit the following links from the Medical Genetics Department at the University of British Columbia in Canada. What is mosaicism? How does trisomy mosaicism occur? | |
What is (are) Congenital deafness with vitiligo and achalasia ? | Congenital deafness with vitiligo and achalasia is a syndrome characterized by deafness present from birth (congenital), associated with short stature, vitiligo, muscle wasting and achalasia (swallowing difficulties). The condition was described in a brother and sister born to first cousin parents. It is believed to be inherited in an autosomal recessive manner. | |
What are the symptoms of Congenital deafness with vitiligo and achalasia ? | What are the signs and symptoms of Congenital deafness with vitiligo and achalasia? The Human Phenotype Ontology provides the following list of signs and symptoms for Congenital deafness with vitiligo and achalasia. 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) EEG abnormality 90% Hypopigmented skin patches 90% Sensorineural hearing impairment 90% Short stature 90% Skeletal muscle atrophy 90% Achalasia - Autosomal recessive inheritance - Hearing impairment - Vitiligo - 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 Ectodermal dysplasia adrenal cyst ? | What are the signs and symptoms of Ectodermal dysplasia adrenal cyst? The Human Phenotype Ontology provides the following list of signs and symptoms for Ectodermal dysplasia adrenal cyst. 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 endocrine system - Autosomal dominant inheritance - Breast hypoplasia - Delayed eruption of teeth - Ectodermal dysplasia - Hypohidrosis - Hypoplastic nipples - Nail dysplasia - 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 Progressive external ophthalmoplegia, autosomal recessive 1 ? | What are the signs and symptoms of Progressive external ophthalmoplegia, autosomal recessive 1 ? The Human Phenotype Ontology provides the following list of signs and symptoms for Progressive external ophthalmoplegia, autosomal recessive 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) Adult onset 75% Cardiomyopathy 7.5% Dyschromatopsia 5% Optic atrophy 5% Visual impairment 5% Areflexia - Autosomal recessive inheritance - Bradykinesia - Decreased activity of cytochrome C oxidase in muscle tissue - Depression - Distal muscle weakness - Dysarthria - Dysphagia - Dysphonia - Elevated serum creatine phosphokinase - EMG: myopathic abnormalities - Emotional lability - Exercise intolerance - Facial palsy - Gait ataxia - Generalized amyotrophy - Hyporeflexia - Impaired distal proprioception - Impaired distal vibration sensation - Increased CSF protein - Increased variability in muscle fiber diameter - Limb ataxia - Mildly elevated creatine phosphokinase - Mitochondrial myopathy - Mitral regurgitation - Mitral valve prolapse - Multiple mitochondrial DNA deletions - Muscle fiber necrosis - Parkinsonism - Pes cavus - Phenotypic variability - Positive Romberg sign - Progressive external ophthalmoplegia - Proximal muscle weakness - Ptosis - Ragged-red muscle fibers - Respiratory insufficiency due to muscle weakness - Rigidity - Sensory ataxic neuropathy - Sensory axonal neuropathy - Steppage gait - Subsarcolemmal accumulations of abnormally shaped mitochondria - 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) Idiopathic neutropenia ? | Idiopathic neutropenia is an acquired form of severe chronic neutropenia whose cause is unknown. Neutropenia is a blood condition that causes a reduced number or complete absence of neutrophils, a type of white blood cell that is responsible for much of the body's protection against infection. Symptoms include fever, moth sores, and other types of infections. Neutropenia idiopathic may occur in children and adults. Frequency and severity of infections appear to be directly related to neutrophil count; while clinical problems in individual patients may vary, in general, those patients with more severe neutropenia have more frequent infections. Most patients respond well to granulocyte-colony stimulating factor (G-CSF). Long-term treatment is usually required. | |
What are the symptoms of Idiopathic neutropenia ? | What are the signs and symptoms of Idiopathic neutropenia? The Human Phenotype Ontology provides the following list of signs and symptoms for Idiopathic neutropenia. 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) Acute myeloid leukemia 7.5% Autosomal dominant inheritance - Neutropenia - 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) GM1 gangliosidosis type 1 ? | GM1 gangliosidosis is an inherited lysosomal storage disorder that progressively destroys nerve cells (neurons) in the brain and spinal cord. The condition may be classified into three major types based on the general age that signs and symptoms first appear: classic infantile (type 1); juvenile (type 2); and adult onset or chronic (type 3). Although the types differ in severity, their features may overlap significantly. GM1 gangliosidosis is caused by mutations in the GLB1 gene and is inherited in an autosomal recessive manner. Treatment is currently symptomatic and supportive. | |
What are the symptoms of GM1 gangliosidosis type 1 ? | What are the signs and symptoms of GM1 gangliosidosis type 1? The Human Phenotype Ontology provides the following list of signs and symptoms for GM1 gangliosidosis type 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) Cherry red spot of the macula 50% Abnormality of the heart valves - Abnormality of the urinary system - Angiokeratoma corporis diffusum - Autosomal recessive inheritance - Beaking of vertebral bodies - Cerebral degeneration - Coarse facial features - Congestive heart failure - Death in infancy - Decreased beta-galactosidase activity - Depressed nasal ridge - Dilated cardiomyopathy - Frontal bossing - Gingival overgrowth - Hepatomegaly - Hypertelorism - Hypertrichosis - Hypertrophic cardiomyopathy - Hypoplastic vertebral bodies - Inguinal hernia - Intellectual disability - Joint stiffness - Kyphosis - Scoliosis - Severe short stature - Short neck - Splenomegaly - Thickened ribs - Vacuolated lymphocytes - 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 Amelogenesis imperfecta, hypoplastic/hypomaturation, X-linked 2 ? | What are the signs and symptoms of Amelogenesis imperfecta, hypoplastic/hypomaturation, X-linked 2? The Human Phenotype Ontology provides the following list of signs and symptoms for Amelogenesis imperfecta, hypoplastic/hypomaturation, X-linked 2. 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) Amelogenesis imperfecta - 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) Mulibrey Nanism ? | Mulibrey nanism is a rare genetic disorder characterized by profound growth delays and distinctive abnormalities of the muscles, liver, brain, and eyes. The acronym MULIBREY stands for (MU)scle, (LI)ver, (BR)ain, and (EY)e; nanism is another word for dwarfism. Signs and symptoms of the disorder may include constrictive pericarditis; low birth weight; short stature; severe progressive growth delays; hypotonia; hepatomegaly; and yellow discoloration of the eyes in infancy. It is caused by mutations in the TRIM37 gene and is inherited in an autosomal recessive manner. Treatment may include surgery for constrictive pericarditis, medications for progressive heart failure and hormone replacement therapy. | |
What are the symptoms of Mulibrey Nanism ? | What are the signs and symptoms of Mulibrey Nanism? Mulibrey nanism (MN) is characterized by progressive growth failure that begins prenatally (before birth). Hypotonia (poor muscle tone) is common. Newborns often have characteristic abnormalities of the head and face, including a triangularly shaped face. Yellow discoloration of the eyes and other ocular abnormalities may be present, but vision is usually normal. More than 90 percent of affected individuals have a J-shaped sella turcica, which is a depression in the sphenoid bone at the base of the skull. Infants with mulibrey nanism may also have symptoms related to overgrowth of the fibrous sac surrounding the heart (constrictive pericarditis). When constrictive pericarditis is present at birth, affected infants may have a bluish discoloration of the skin (cyanosis), especially on the lips and fingertips. Individuals with MN typically have a high-pitched voice. Other symptoms may include abnormally prominent veins in the neck, congestion in the lungs, abnormal fluid accumulation in the abdomen (ascites), swelling of the arms and/or legs (peripheral edema), and/or enlargement of the heart (cardiac hypertrophy) and/or liver (hepatomegaly). There may also be elevated pressure in the veins, congestion or blockage in the main artery serving the lungs (pulmonary artery), and/or a build-up of fibrous tissue in the walls of the lungs (pulmonary fibrosis). Associated complications of these conditions may lead to congestive heart failure. In some cases, individuals with mulibrey nanism may have additional physical abnormalities, such as an unusually thin shinbone (fibrous tibia dysplasia). Large cerebral ventricles in the brain and delayed motor development are uncommon findings. Most affected individuals have normal intelligence. Individuals with mulibrey nanism often have underdevelopment of various endocrine glands, that leads to hormone deficiencies. Delayed puberty sometimes occurs, accompanied by infrequent or very light menstrual periods. Females have an increased risk for premature ovarian failure and ovarian tumors. The Human Phenotype Ontology provides the following list of signs and symptoms for Mulibrey Nanism. 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) Decreased body weight 90% Intrauterine growth retardation 90% Macrocephaly 90% Short stature 90% Hepatomegaly 50% Wide nasal bridge 50% Absent frontal sinuses - Astigmatism - Autosomal recessive inheritance - Congestive heart failure - Dental crowding - Depressed nasal bridge - Dolichocephaly - Dysarthria - Frontal bossing - High pitched voice - Hypertelorism - Hypodontia - Hypoplastic frontal sinuses - J-shaped sella turcica - Microglossia - Muscular hypotonia - Myocardial fibrosis - Nephroblastoma (Wilms tumor) - Nevus - Pericardial constriction - Pigmentary retinopathy - Strabismus - Triangular face - Ventriculomegaly - Weak voice - 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. | |
How to diagnose Mulibrey Nanism ? | Is genetic testing available for mulibrey nanism? Testing for the TRIM37 gene is available for carrier testing, confirming the diagnosis, and prenatal diagnosis. GeneTests lists the names of laboratories that are performing genetic testing for mulibrey nanism. To view the contact information for the clinical laboratories conducting testing, 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 is (are) Mucopolysaccharidosis type I ? | Mucopolysaccharidosis I (MPS I) is a condition that affects many parts of the body. It is a progressively debilitating disorder; however, the rate of progression varies among affected individuals. MPS I is caused by mutations in the IDUA gene. These mutations lead to reduced levels or the complete lack of the IDUA enzyme. Without the proper amount of this enzyme, large sugar molecules called glycosaminoglycans (GAGs) accumulate within cells called lysosomes. This causes the lysosomes to increase in size, causing many different organs and tissues of the body to become enlarged. This leads to the medical problems seen in the condition. MPS I was once divided into three separate syndromes: Hurler syndrome, Hurler-Scheie syndrome, and Scheie syndrome, listed from most to least severe. Because no biochemical differences have been identified and the clinical findings overlap, the condition is now divided into two subtypes, severe MPS I and attenuated MPS I. People with severe MPS I typically have an earlier onset of symptoms, a decline in intellectual function, and a shorter lifespan. Although there is no cure for MPS I, bone marrow transplant and enzyme replacement therapy are treatment options that may help manage the symptoms of this condition. | |
What are the symptoms of Mucopolysaccharidosis type I ? | What are the signs and symptoms of Mucopolysaccharidosis type I? The signs and symptoms of MPS I are not present at birth, but they begin to appear during childhood. People with severe MPS I develop the features of this condition earlier than those with attenuated MPS I. The following list includes the most common signs and symptoms of MPS I. Enlarged head, lips, cheeks, tongue, and nose Enlarged vocal cords, resulting in a deep voice Frequent upper respiratory infections Sleep apnea Hydrocephalus Hepatosplenomegaly (enlarged liver and spleen) Umbilical hernia Inguinal hernia Hearing loss Recurrent ear infections Corneal clouding Carpal tunnel syndrome Narrowing of the spinal canal (spinal stenosis) Heart valve abnormalities, which can lead to heart failure Short stature Joint deformities (contractures) Dysostosis multiplex (generalized thickening of most long bones, particularly the ribs) The Human Phenotype Ontology provides the following list of signs and symptoms for Mucopolysaccharidosis type I. 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% Abnormality of the heart valves 90% Abnormality of the metaphyses 90% Abnormality of the tonsils 90% Abnormality of the voice 90% Coarse facial features 90% Hepatomegaly 90% Hernia 90% Hernia of the abdominal wall 90% Hypertrichosis 90% Limitation of joint mobility 90% Mucopolysacchariduria 90% Opacification of the corneal stroma 90% Otitis media 90% Scoliosis 90% Short stature 90% Sinusitis 90% Skeletal dysplasia 90% Splenomegaly 90% Abnormal nasal morphology 50% Abnormal pyramidal signs 50% Abnormality of the hip bone 50% Abnormality of the nasal alae 50% Apnea 50% Arthralgia 50% Cognitive impairment 50% Decreased nerve conduction velocity 50% Depressed nasal bridge 50% Developmental regression 50% Dolichocephaly 50% Enlarged thorax 50% Full cheeks 50% Gingival overgrowth 50% Glaucoma 50% Low anterior hairline 50% Macrocephaly 50% Malabsorption 50% Microdontia 50% Paresthesia 50% Recurrent respiratory infections 50% Retinopathy 50% Sensorineural hearing impairment 50% Spinal canal stenosis 50% Thick lower lip vermilion 50% Abnormal tendon morphology 7.5% Abnormality of the aortic valve 7.5% Aseptic necrosis 7.5% Congestive heart failure 7.5% Hemiplegia/hemiparesis 7.5% Hydrocephalus 7.5% Hypertrophic cardiomyopathy 7.5% Joint dislocation 7.5% Optic atrophy 7.5% Visual impairment 7.5% Aortic regurgitation - Autosomal recessive inheritance - Corneal opacity - Dysostosis multiplex - Hirsutism - Joint stiffness - Kyphosis - Mitral regurgitation - Obstructive sleep apnea - Pulmonary hypertension - Thick vermilion border - Tracheal stenosis - 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 causes Mucopolysaccharidosis type I ? | What causes mucopolysaccharidosis I (MPS I)? Mutations in the IDUA gene cause MPS I. The IDUA gene provides instructions for producing an enzyme that is involved in the breakdown of large sugar molecules called glycosaminoglycans (GAGs). Mutations in the IDUA gene reduce or completely eliminate the function of the IDUA enzyme. The lack of IDUA enzyme activity leads to the accumulation of GAGs within cells, specifically inside the lysosomes. Lysosomes are compartments in the cell that digest and recycle different types of molecules. Conditions that cause molecules to build up inside the lysosomes, including MPS I, are called lysosomal storage disorders. The accumulation of GAGs increases the size of the lysosomes, which is why many tissues and organs are enlarged in this disorder. | |
Is Mucopolysaccharidosis type I inherited ? | How is mucopolysaccharidosis I (MPS I) inherited? MPS I is inherited from both parents in an autosomal recessive pattern. | |
What are the treatments for Mucopolysaccharidosis type I ? | What treatment is available for mucopolysaccharidosis I (MPS I)? The two main treatments for MPS I are enzyme replacement therapy (ERT) and bone marrow transplant. Both of these treatments work by replacing the missing IDUA enzyme. A drug called laronidase or Aldurazyme is the enzyme replacement therapy for MPS I. Treatment with laronidase can improve problems with breathing, growth, the bones, joints and heart. However, this treatment is not expected to treat problems with mental development because laronidase cannot cross the blood-brain barrier. A bone marrow transplant is another treatment option that provides the person with MPS I with cells that can produce the IDUA enyzme. A bone marrow transplant can stop the progression of neurological problems. | |
What is (are) Bilateral frontoparietal polymicrogyria ? | Bilateral frontoparietal polymicrogyria (BFPP) is a rare neurological disorder that affects the cerebral cortex (the outer surface of the brain). BFPP specifically affects the frontal and parietal lobes on both sides of the brain (bilateral). Signs and symptoms typically include moderate to severe intellectual disability, developmental delay, seizures, cerebellar ataxia, strabismus, and dysconjugate gaze (eyes that are not aligned). Some cases are caused by mutations in the GPR56 gene and are inherited in an autosomal recessive manner. Treatment is based on the signs and symptoms present in each person. | |
What are the symptoms of Bilateral frontoparietal polymicrogyria ? | What are the signs and symptoms of Bilateral frontoparietal polymicrogyria? The signs and symptoms of bilateral frontoparietal polymicrogyria vary but may include: Moderate to severe intellectual disability Developmental delay Seizures Dysconjugate gaze (eyes that are not aligned) Ataxia Strabismus Increased muscle tone Finger dysmetria (difficulty controlling speed, distance and/or power of movements) The Human Phenotype Ontology provides the following list of signs and symptoms for Bilateral frontoparietal polymicrogyria. 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) Ankle clonus - Autosomal recessive inheritance - Babinski sign - Broad-based gait - Cerebellar hypoplasia - Cerebral dysmyelination - Esotropia - Exotropia - Frontoparietal polymicrogyria - Hyperreflexia - Hypertonia - Hypoplasia of the brainstem - Intellectual disability - Nystagmus - Polymicrogyria, anterior to posterior gradient - Seizures - Truncal ataxia - 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 Paragangliomas 4 ? | What are the signs and symptoms of Paragangliomas 4? The Human Phenotype Ontology provides the following list of signs and symptoms for Paragangliomas 4. 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) Gastrointestinal stroma tumor 5% Neuroblastoma 5% Abnormality of urine catecholamine concentration - Adrenal pheochromocytoma - Adult onset - Anxiety (with pheochromocytoma) - Autosomal dominant inheritance - Chemodectoma - Diaphoresis (with pheochromocytoma) - Extraadrenal pheochromocytoma - Glomus jugular tumor - Headache (with pheochromocytoma) - Hypertension associated with pheochromocytoma - Incomplete penetrance - Palpitations - Palpitations (with pheochromocytoma) - Paraganglioma-related cranial nerve palsy - Pulsatile tinnitus (tympanic paraganglioma) - Renal cell carcinoma - Tachycardia (with pheochromocytoma) - 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) Primary orthostatic tremor ? | Primary orthostatic tremor is a movement disorder characterized by rhythmic muscle contractions that occur in the legs and trunk immediately after standing. It may be perceived more as an unsteadiness than an actual tremor. The tremor may disappear or improve when a person is sitting or walking. Over time, the tremors may become more severe, affecting quality of life and causing increasing disability. In some cases, primary orthostatic tremor may occur with other movement disorders. Individuals with primary orthostatic tremor may be treated with clonazepam and primidone. The cause of this condition is unknown. | |
What are the symptoms of Primary orthostatic tremor ? | What are the signs and symptoms of Primary orthostatic tremor? The Human Phenotype Ontology provides the following list of signs and symptoms for Primary orthostatic tremor. 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% Flexion contracture 90% Tremor 90% Myalgia 50% Abnormality of extrapyramidal motor function 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 is (are) Cholesteatoma ? | Cholesteatoma is a type of skin cyst located in the middle ear. It can be congenital (present from birth), but it more commonly occurs as a complication of chronic ear infection. The hallmark symptom is a painless discharge from the ear. Hearing loss, dizziness, and facial muscle paralysis are rare but can result from continued cholesteatoma growth. Surgery can stop infections and prevent complications. | |
What are the symptoms of Cholesteatoma ? | What symptoms are associated with cholesteatoma? Early symptoms may include drainage from the ear, sometimes with a foul odor. As the cholesteatoma cyst or sac enlarges, it can lead to a full feeling or pressure in the ear, hearing loss, dizziness and pain, numbness or muscle weakness on one side of the face. On examination, the ear drum (tympanic membrane) appears abnormal. In rare cases, a cholesteatoma may erode through the tegmen, allowing an epidural abscess to form which could lead to a more serious brain infection. | |
What causes Cholesteatoma ? | What causes cholesteatoma? A cholesteatoma usually occurs because of poor eustachian tube function in conjunction with infection in the middle ear. Negative pressure within the middle ear pulls a part of the eardrum the wrong way, creating a sac or cyst that fills with old skin cells and other waste material. As the cyst gets bigger, some of the middle ear bones break down, affecting hearing. A rare congenital form of cholesteatoma (one present at birth) can occur in the middle ear and elsewhere, such as in the nearby skull bones. | |
What are the treatments for Cholesteatoma ? | How might cholesteatoma be treated? An examination by an otolaryngologist - a doctor who specializes in head and neck conditions - can confirm the presence of a cholesteatoma. Initial treatment may consist of a careful cleaning of the ear, antibiotics, and eardrops. Therapy aims to stop drainage in the ear by controlling the infection. Large or complicated cholesteatomas may require surgical treatment to protect the patient from serious complications. | |
What is (are) Valinemia ? | Valinemia is a very rare metabolic disorder characterized by abnormally high levels of the amino acid valine in the blood and urine. Infants with valinemia reportedly experience lack of appetite, vomiting, and failure to thrive. In some cases, the condition may be life-threatening. Low muscle tone (hypotonia), excessive drowsiness, hyperactivity, and developmental delay have also been reported. Valinemia is caused by a deficiency of the enzyme valine transaminase, which is needed for the breakdown (metabolism) of valine in the body. It is inherited in an autosomal recessive manner, although the gene responsible for the condition is not yet known. Treatment includes a diet low in valine (introduced during early infancy) which usually improves symptoms and brings valine levels to normal. | |
What are the symptoms of Valinemia ? | What are the signs and symptoms of Valinemia? Valinemia is thought to be extremely rare and has been described in only a few people. The condition is reportedly present from birth. Symptoms in the newborn period include lack of appetite, protein intolerance, metabolic acidosis, frequent vomiting, failure to thrive, and/or coma. The condition can become life-threatening. Abnormally low muscle tone (hypotonia); hyperkinesia; hyperactivity; excessive drowsiness; and delayed mental and physical development have also been reported. The Human Phenotype Ontology provides the following list of signs and symptoms for Valinemia. 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 - Drowsiness - Failure to thrive - Hyperkinesis - Hypervalinemia - Muscle weakness - Vomiting - 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 Valinemia ? | How might valinemia be treated? Due to the rarity of valinemia, information about treatment in the medical literature is very limited. A diet low in valine introduced during early infancy is thought to improve symptoms of the condition and lower valine concentrations in the blood to normal levels. | |
What are the symptoms of Teebi Kaurah syndrome ? | What are the signs and symptoms of Teebi Kaurah syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Teebi Kaurah 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) Anonychia 90% Aplastic/hypoplastic toenail 90% Microcephaly 50% Single transverse palmar crease 50% Carious teeth 7.5% Clinodactyly of the 5th finger 7.5% Sloping forehead 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 is (are) Book syndrome ? | Book syndrome is a very rare type of ectodermal dysplasia. Signs and symptoms include premolar aplasia (when the premolars fail to develop); excessive sweating (hyperhidrosis); and premature graying of the hair. Other features that have been reported in only one person include a narrow palate (roof of the mouth); hypoplastic (underdeveloped) nails; eyebrow anomalies; a unilateral simian crease; and poorly formed dermatoglyphics (skin patterns on the hands and feet). Book syndrome is inherited in an autosomal dominant manner. | |
What are the symptoms of Book syndrome ? | What are the signs and symptoms of Book syndrome? To our knowledge, Book syndrome has only been reported in one, large Swedish family (25 cases in 4 generations) and in one other isolated case. The signs and symptoms reported in the Swedish family included premolar aplasia (when the premolars fail to develop); excessive sweating (hyperhidrosis); and early whitening of the hair. Early whitening of the hair was the most constant symptom, being found in every affected family member. The age of onset of this symptom ranged from age 6 to age 23. In some cases, there was whitening of hair on other parts of the body such as the armipits, genital hair, and eyebrows. Two-thirds of the affected people had an abnormality of the sweat glands. In the isolated case, additional features that were reported include a narrow palate (roof of the mouth); hypoplastic (underdeveloped) nails; eyebrow anomalies; a unilateral simian crease; and poorly formed dermatoglyphics (skin patterns on the hands and feet). The Human Phenotype Ontology provides the following list of signs and symptoms for Book 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) Premature graying of hair 90% Short palm 90% Abnormality of the eyebrow 50% Abnormality of the fingernails 50% Abnormality of the palate 50% Single transverse palmar crease 50% Autosomal dominant inheritance - Hypodontia - Palmoplantar hyperhidrosis - 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 Book syndrome inherited ? | How is Book syndrome inherited? To our knowledge, Book syndrome has only been reported in one, large Swedish family (25 cases in 4 generations) and in one other isolated case. In the Swedish family, the syndrome was inherited in an autosomal dominant manner. In autosomal dominant inheritance, having a mutation in only one copy of the responsible gene is enough to cause signs and symptoms of the condition. When a person with an autosomal dominant condition has children, each child has a 50% (1 in 2) risk to inherit the mutated copy of the gene. | |
How to diagnose Book syndrome ? | How is Book syndrome diagnosed? Due to the rarity of Book syndrome and scarcity of reports in the medical literature, we are unaware of specific information about diagnosing Book syndrome. In general, ectodermal dysplasias are diagnosed by the presence of specific symptoms affecting the hair, nails, sweat glands, and/or teeth. When a person has at least two types of abnormal ectodermal features (e.g., malformed teeth and extremely sparse hair), the person is typically identified as being affected by an ectodermal dysplasia. Specific genetics tests to diagnose ectodermal dysplasia are available for only a limited number of ectodermal dysplasias. Unfortunately, there currently is no genetic test for Book syndrome because the gene responsible for the condition has not yet been identified. People who are interested in learning more about a diagnosis of ectodermal dysplasia for themselves or family members should speak with their dermatologist and/or dentist. These specialists can help determine whether a person has signs and/or symptoms of ectodermal dysplasia. | |
What is (are) Punctate palmoplantar keratoderma type I ? | Punctate palmoplantar keratoderma type I, also known as keratosis palmoplantaris papulosa (KPPP) or Brauer-Buschke-Fisher Syndrome is is a rare condition that affects the skin. It is a type of punctate palmoplantar keratoderma. Signs and symptoms begin in early adolescence or later and include hard, round bumps of thickened skin on the palms of the hands and soles of the feet. It is is usually inherited in an autosomal dominant manner and can be caused by mutations in the AAGAB gene. Treatment options may include chemical or mechanical keratolysis as well as systemic acitretin. Some affected individuals have used surgical approaches consisting of excision and skin grafting. | |
What are the symptoms of Punctate palmoplantar keratoderma type I ? | What are the signs and symptoms of Punctate palmoplantar keratoderma type I? Signs and symptoms of punctate palmoplantar keratoderma type 1 tend to become evident between the ages of 10 to 30 years. Symptoms include multiple, tiny, hard rounded bumps of thickened skin on the palms of the hands and soles of the feet. The bumps may join to form calluses on pressure points. The legions may cause pain, making walking difficult and impairing hand/finger movement. Symptoms tend to worsen with time and may be aggravated by manual work or injury. In some families, punctate palmoplantar keratoderma type 1 appears to be associated with an increased risk for several types of cancer. The Human Phenotype Ontology provides the following list of signs and symptoms for Punctate palmoplantar keratoderma type I. 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) Palmoplantar keratoderma 90% Lymphoma 50% Neoplasm of the breast 50% Neoplasm of the colon 50% Neoplasm of the pancreas 50% Renal neoplasm 50% Abnormality of the nail 7.5% Abnormality of the skin - Autosomal dominant inheritance - Heterogeneous - Late onset - 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 Punctate palmoplantar keratoderma type I ? | What causes palmoplantar keratoderma type 1? Punctate palmoplantar keratoderma type 1 is a condition that is usually inherited in an autosomal dominant manner. It has recently been shown to be caused by mutations in the AAGAB gene in several families. Although the exact function of the AAGAB gene is currently unknown, the gene is thought to play an important role in skin integrity. | |
Is Punctate palmoplantar keratoderma type I inherited ? | How is punctate palmoplantar keratoderma type I inherited? Punctate palmoplantar keratoderma type I is usually inherited in an autosomal dominant manner. Autosomal dominant inheritance is when only one mutated copy of a disease-causing gene in each cell is sufficient for a person to be affected. An autosomal dominant condition may occur for the first time in an affected individual due to a new mutation, or may be inherited from an affected parent. When a person with an autosomal dominant disorder has a child, there is a 50% chance that his/her child will inherit the condition. Keratosis palmoplantaris papulosa shows age dependent penetrance and possibly variable penetrance as well. Age dependant penetrance means that the older the person is, the more likely they are to develop symptoms if they have inherited the disease causing gene mutation. Variable penetrance means that not everyone who inherits the gene mutation that causes keratosis palmoplantaris papulosa develops the signs and symptoms of the condition. However this person would still be at risk of passing the disease-causing mutation to their offspring. | |
How to diagnose Punctate palmoplantar keratoderma type I ? | How is punctate palmoplantar keratoderma type I diagnosed? Features that support the diagnosis of punctate palmoplantar keratoderma type I include a positive family history (i.e., other affected family members), the presence of multiple tiny hard rounded bumps of thickened skin on the hands and feet, and certain cell histology (i.e., appearance of skin samples when viewed under a microscope). | |
What are the treatments for Punctate palmoplantar keratoderma type I ? | How might punctate palmoplantar keratoderma type 1 be treated? Treatment options for this condition generally include topical salicylic acid, mechanical debridement, excision, and systemic retinoids. These therapies can lead to a temporary decrease in skin thickness and softening of the skin. Unfortunately, in many cases, medical and surgical treatment for punctate keratodermas do not provide consistent or long-lasting results. In general, there has been some reported success using keratolytics such as corticosteroids, urea, salicylic acid, lactic acid, or Vitamin A. Systemic therapy using vitamin D analogues, aromatic retinoids, and 5-fluorouracil has also been used. However, individuals with successful resolution of lesions often relapse unless they are maintained on chronic low-dose therapy. These topical and systemic treatments carry a variety of side effects. Surgery (including excision and skin grafting) for punctate keratodermas has been used on lesions resistant to medical treatment, but healing after surgical treatment can be difficult. CO2 laser ablation has also been attempted and reportedly produces good results for limited areas of hyperkeratosis of the palms. | |
What are the symptoms of Small cell carcinoma of the bladder ? | What are the signs and symptoms of Small cell carcinoma of the bladder? The Human Phenotype Ontology provides the following list of signs and symptoms for Small cell carcinoma of the bladder. 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) Hematuria 90% Urinary tract neoplasm 90% Abdominal pain 7.5% Hypercalcemia 7.5% Recurrent urinary tract infections 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 Nijmegen breakage syndrome ? | What are the signs and symptoms of Nijmegen breakage syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Nijmegen breakage 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 immunoglobulin level 90% Abnormal nasal morphology 90% Abnormality of chromosome stability 90% Abnormality of the upper urinary tract 90% Attention deficit hyperactivity disorder 90% Cognitive impairment 90% Convex nasal ridge 90% Decreased body weight 90% Deep philtrum 90% Depressed nasal bridge 90% Hearing abnormality 90% Hemolytic anemia 90% Low anterior hairline 90% Malabsorption 90% Microcephaly 90% Recurrent respiratory infections 90% Short neck 90% Short stature 90% Sinusitis 90% Sloping forehead 90% Thrombocytopenia 90% Upslanted palpebral fissure 90% Urogenital fistula 90% Aplasia/Hypoplasia of the thymus 50% Abnormality of neuronal migration 7.5% Acute leukemia 7.5% Cleft palate 7.5% Cutaneous photosensitivity 7.5% Freckling 7.5% Glioma 7.5% Lymphoma 7.5% Medulloblastoma 7.5% Muscle weakness 7.5% Non-midline cleft lip 7.5% Respiratory insufficiency 7.5% Skeletal muscle atrophy 7.5% Anal atresia - Anal stenosis - Autoimmune hemolytic anemia - Autosomal recessive inheritance - B lymphocytopenia - Bronchiectasis - Cafe-au-lait spot - Choanal atresia - Cleft upper lip - Diarrhea - Dysgammaglobulinemia - Hydronephrosis - Hyperactivity - Intellectual disability - Intrauterine growth retardation - Long nose - Macrotia - Malar prominence - Mastoiditis - Neurodegeneration - Otitis media - Primary ovarian failure - Progressive vitiligo - Recurrent bronchitis - Recurrent infection of the gastrointestinal tract - Recurrent pneumonia - Recurrent urinary tract infections - Rhabdomyosarcoma - T lymphocytopenia - 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) Familial Mediterranean fever ? | Familial Mediterranean fever (FMF) is an inherited condition characterized by episodes of painful inflammation of the abdominal lining (peritonitis), lining surrounding the lungs (pleurisy), and joints (arthralgia and occasionally arthritis). These episodes are often accompanied by fever and sometimes a characteristic ankle rash. The first episode usually occurs in childhood or the teenage years, but in some cases, the initial attack occurs much later in life. Between attacks, people often do not have any symptoms. Without treatment, FMF can lead to kidney failure due to a buildup of certain protein deposits (amyloidosis). FMF is usually inherited in an autosomal recessive fashion and is caused by mutations in the MEFV gene. Treatment for FMF often involves use of a medication called colchicine. | |
What are the symptoms of Familial Mediterranean fever ? | What are the signs and symptoms of Familial Mediterranean fever? Familial Mediterranean fever (FMF) is characterized by relatively short, usually 1- to 3-day, episodes of fever accompanied by abdominal pain, chest pain, joint pain, pelvic pain, muscle aches, and/or a skin rash. The muscle pain is often confused with fibromyalgia and the joint pain is sometimes confused with gout. The pain symptoms are usually the result of inflammation in the lining of the abdomen, lungs, joints, heart, pelvis, and/or in the membrane that surrounds the brain and spinal cord. Headaches and amyloidosis may also occur. The majority of people with FMF experience their first episode by age 20. The frequency of such attacks is highly variable and the interval between attacks ranges from days to years. The frequency and symptoms experienced during an attack may also change over time. People tend to be symptom-free between attacks. The Human Phenotype Ontology provides the following list of signs and symptoms for Familial Mediterranean fever. 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) Abdominal pain 90% Abnormality of temperature regulation 90% Arthralgia 90% Constipation 90% Myalgia 90% Nausea and vomiting 90% Abnormality of the oral cavity 50% Abnormality of the pleura 50% Chest pain 50% Diarrhea 50% Erysipelas 50% Proteinuria 50% Seizures 50% Abnormality of the pericardium 7.5% Acute hepatic failure 7.5% Arrhythmia 7.5% Ascites 7.5% Coronary artery disease 7.5% Edema of the lower limbs 7.5% Gastrointestinal infarctions 7.5% Intestinal obstruction 7.5% Lymphadenopathy 7.5% Malabsorption 7.5% Meningitis 7.5% Nephrocalcinosis 7.5% Nephropathy 7.5% Nephrotic syndrome 7.5% Orchitis 7.5% Osteoarthritis 7.5% Pancreatitis 7.5% Skin rash 7.5% Splenomegaly 7.5% Vasculitis 7.5% Arthritis - Autosomal recessive inheritance - Elevated erythrocyte sedimentation rate - Episodic fever - Hepatomegaly - Leukocytosis - Pericarditis - Peritonitis - Pleuritis - Renal amyloidosis - Renal insufficiency - 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 Familial Mediterranean fever inherited ? | How is familial Mediterranean fever (FMF) inherited? FMF is almost always inherited in an autosomal recessive manner. This means that to be affected, a person must have a mutation 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. As many as 1 in 5 people of Sephardic (non-Ashkenazi) Jewish, Armenian, Arab and Turkish heritage are carriers for FMF. In rare cases, this condition appears to be inherited in an autosomal dominant manner. This means that to be affected, a person only needs a change (mutation) in one copy of the responsible gene in each cell. In some cases, an affected person inherits the mutation from an affected parent. Other cases may result from new (de novo) mutations in the gene. These cases occur in people with no history of the disorder in their family. A person with FMF inherited in an autosomal dominant manner has a 50% chance with each pregnancy of passing along the altered gene to his or her child. In some cases, FMF may appear to be autosomal dominant when it is actually autosomal recessive. This phenomenon is called pseudodominance. This may happen in families if one parent is an unaffected, unknown carrier (with 1 mutation) and the other parent is affected (with 2 mutations). It may appear that an affected child inherited FMF from only the affected parent, when in fact he/she inherited one mutation from each parent. | |
How to diagnose Familial Mediterranean fever ? | How is familial Mediterranean fever (FMF) diagnosed? In making a diagnosis of FMF, doctors take all of these factors into account: Whether the person has the clinical symptoms common for the disease and whether the symptoms are recurrent. How he or she responds to colchicine treatment. Usually a positive family history in people of Middle Eastern ancestry. The results of genetic testing. Also helpful in establishing a correct diagnosis of FMF is the person's ancestry. Testing for the following can also be helpful: Elevated white blood cell count, which is an indication of an immune response. Elevated erythrocyte sedimentation rate (ESR), which is an indication of an inflammatory response. Elevated plasma fibrinogen, which helps stop bleeding. An elevated amount would indicate that something might be wrong with this mechanism. Elevated serum haptoglobin, which would indicate that red blood cells are being destroyed, a common occurrence in rheumatic diseases, such as FMF. Elevated C-reactive protein, which is a special type of protein, produced by the liver, that is only present during episodes of acute inflammation. Elevated albumin in the urine, which is demonstrated by urinalysis. The presence of the protein albumin in the urine can be a symptom of kidney disease, along with microscopic hematuria (very small - microscopic - amounts of blood or blood cells in the urine), during attacks. Is genetic testing for familial Mediterranean fever (FMF) available? Yes. The Genetic Testing Registry (GTR) provides information about the genetic testing for this condition. We strongly recommend that you work with a genetics professional if you wish to pursue genetic testing. | |
What are the treatments for Familial Mediterranean fever ? | How might familial Mediterranean fever (FMF) be treated? Currently, there is no known cure for FMF. Physicians can only treat the symptoms of the disease. A common therapy for FMF is daily use of the drug colchicine, a medicine that reduces inflammation. Many people require colchicine for life. This therapy has been successful in preventing attacks of fever in 75 percent of those who take the drug regularly. Over 90 percent of people with FMF demonstrate a marked improvement. Even if colchicine does not prevent the fever attacks, it does prevent the amyloidosis. However, compliance in taking colchicine every day is very important. If a person stops taking the drug, an attack can occur within a few days. Complications of colchicine use can also occur and include muscle weakness (myopathy) and a toxic epidermal necrolysis-like reaction. Since the gene that causes FMF codes for the protein pyrin, researchers hope that by studying how this protein works they will ultimately develop improved treatments for FMF, and possibly for other conditions involving excess inflammation. | |
What is (are) Lucey-Driscoll syndrome ? | Lucey-Driscoll syndrome, a form of transient familial hyperbilirubinemia, is a rare metabolic disorder that leads to very high levels of bilirubin in a newborn's blood. Babies with this disorder may be born with severe jaundice (yellow skin), yellow eyes and lethargy. It occurs when the body does not properly break down (metabolize) a certain form of bilirubin. If untreated, this condition can cause seizures, neurologic problems (kernicterus) and even death. Treatment for Lucey-Driscoll syndrome includes phototherapy with blue light (to treat the high level of bilirubin in the blood) and an exchange transfusion is sometimes necessary. Different inheritance patterns have been reported and in some cases, it occurs in individuals with no family history of the condition. | |
What are the symptoms of Lucey-Driscoll syndrome ? | What are the signs and symptoms of Lucey-Driscoll syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Lucey-Driscoll 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 - Cerebral palsy - Jaundice - Kernicterus - Neonatal unconjugated hyperbilirubinemia - 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 Lucey-Driscoll syndrome ? | What causes Lucey-Driscoll syndrome? Lucey-Driscoll syndrome is caused by high levels of a bilirubin "conjugating enzyme inhibitor which is a substance that limits the ability of bilirubin to bind to an enzyme. When bilirubin does not bind efficiently, it builds up in the bloodstream. This inhibitor is thought to occur in the blood (serum) of pregnant women, and it likely blocks the enzyme activity necessary for the development of the fetal liver. Familial cases may result from the pregnant woman having a mutation in the uridine diphosphate-glucuronosyltransferase gene(UGT1A1). | |
What is (are) MECP2 duplication syndrome ? | MECP2 duplication syndrome is a genetic condition that occurs almost exclusively in males and is characterized by moderate to severe intellectual disability. Other signs and symptoms include infantile hypotonia; delayed motor milestones (i.e. sitting up, crawling); recurrent infections; poor or absent speech; seizures; and/or spasticity. MECP2 duplication syndrome occurs when there is an extra copy (duplication) of the MECP2 gene in each cell. This is generally caused by a duplication of genetic material located on the long (q) arm of the X chromosome. The condition is inherited in an X-linked manner. Treatment is based on the signs and symptoms present in each person. | |
What are the symptoms of MECP2 duplication syndrome ? | What are the signs and symptoms of MECP2 duplication syndrome? MECP2 duplication syndrome is a condition that occurs almost exclusively in males and is characterized by moderate to severe intellectual disability. Infants affected by this condition are generally diagnosed with severe hypotonia within the first few weeks of life. This reduced muscle tone can lead to feeding difficulties which may require a feeding tube. Trouble swallowing, gastroesophageal reflux, failure to thrive, and extensive drooling are also common symptoms. Distinctive physical features may be noticed shortly after birth which can include brachycephaly (abnormally flat back of the head), midface hypoplasia (underdevelopment of the middle of the face), large ears, deep-set eyes, prominent chin, and a depressed nasal bridge. Due to hypotonia, affected children often have delayed development of motor milestones such as sitting up and crawling. Approximately, one third of affected people never walk independently and those who are able to walk may have an abnormal gait (style of walking). In most cases, hypotonia gives way to spasticity during childhood. Progressive spasticity, which is generally more pronounced in the legs, may lead to the development of mild contractures. Consequently, many affected adults require the use of a wheelchair. The majority of affected people do not develop the ability to talk. Some may have limited speech during early childhood, but frequently this ability is progressively lost during adolescence. Other signs and symptoms associated with MECP2 duplication syndrome may include seizures; autistic features; clinically significant constipation and bladder dysfunction. Many people affected by MECP2 duplication syndrome have recurrent respiratory tract infections. These respiratory infections can be life-threatening and as a result, approximately half of affected people succumb by age 25. In most cases, females with a duplication of the MECP2 gene do not have any symptoms, although depression, anxiety, and autistic features have been described in some. When affected, women with MECP2 duplication syndrome are generally less severely affected than males with the condition. The Human Phenotype Ontology provides the following list of signs and symptoms for MECP2 duplication 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 metabolism/homeostasis - Abnormality of the teeth - Absent speech - Anxiety - Ataxia - Brachycephaly - Bruxism - Chorea - Constipation - Cryptorchidism - Depressed nasal bridge - Depression - Drooling - Dysphagia - Facial hypotonia - Flat midface - Gastroesophageal reflux - Infantile muscular hypotonia - Intellectual disability - Low-set ears - Macrocephaly - Macrotia - Malar flattening - Microcephaly - Narrow mouth - Poor eye contact - Progressive - Progressive spasticity - Recurrent respiratory infections - Rigidity - Seizures - Severe global developmental delay - Tented upper lip vermilion - 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 causes MECP2 duplication syndrome ? | What causes MECP2 duplication syndrome? MECP2 duplication syndrome occurs when there is an extra copy (duplication) of the MECP2 gene in each cell. This is generally caused by a duplication of genetic material located on the long (q) arm of the X chromosome. The size of the duplication can vary; however, this does not appear to affect the severity of the condition. People with larger duplications have signs and symptoms that are similar to people with smaller duplications. The MECP2 gene encodes a protein that is important for normal brain functioning. Although it plays many roles, one of its most important functions is to regulate other genes in the brain by switching them on and off. A duplication of the MECP2 gene leads to the production of excess protein, which is unable to properly regulate the expression of other genes. This results in irregular brain activity, leading to the signs and symptoms of MECP2 duplication syndrome. | |
Is MECP2 duplication syndrome inherited ? | Is MECP2 duplication syndrome inherited? MECP2 duplication syndrome is inherited in an X-linked manner. A condition is considered X-linked if the genetic change that causes the condition is located on the X chromosome, one of the two sex chromosomes (the Y chromosome is the other sex chromosome). In males (who have only one X chromosome), a duplication of the MECP2 gene in each cell is sufficient to cause the condition. In females (who have two X chromosomes), a duplication of one of the two copies of the gene typically does not cause the disorder. Early in the development of females, one of the two X chromosomes is randomly and permanently inactivated in each cell (called X-inactivation). X-inactivation prevents female cells from having twice as many functional X chromosomes as males. Because X-inactivation is usually random, the X chromosome inherited from the mother is active in some cells, and the X chromosome inherited from the father is active in other cells. However, when a female has an X chromosome with a duplicated copy of the MECP2 gene, the abnormal chromosome is often preferentially inactivated in many or all cells. This is called "skewed X-inactivation." It prevents some women with an MECP2 duplication from developing features of the duplication since the extra genetic material is not active. In most cases, MECP2 duplication syndrome is inherited from a mother who has no signs or symptoms of the duplication. Rarely, the condition is not inherited and occurs due to a random event during the formation of the egg or sperm, or in early fetal development. When this happens, it is called a de novo duplication (occurring as a new genetic change for the first time in the affected person). | |
How to diagnose MECP2 duplication syndrome ? | How is MECP2 duplication syndrome diagnosed? A diagnosis of MECP2 duplication syndrome is often suspected based on the presence of characteristic signs and symptoms. Genetic testing can then be ordered to confirm the diagnosis. | |
What are the treatments for MECP2 duplication syndrome ? | How might MECP2 duplication syndrome be treated? Because MECP2 duplication syndrome affects many different systems of the body, medical management is often provided by a team of doctors and other healthcare professionals. Treatment for this condition varies based on the signs and symptoms present in each person. For example, infants with trouble swallowing and/or other feeding difficulties may require a feeding tube. Early developmental interventions may be recommended to help affected children reach their potential. This may include physical therapy, speech therapy and/or occupational therapy. Medications may be prescribed to treat seizures or spasticity. Recurrent infections are usually treated aggressively with appropriate antibiotics. Please speak with a healthcare provider if you have any questions about your personal medical management plan or that of a family member. | |
What is (are) Beta-thalassemia ? | Beta-thalassemia is a blood disorder that reduces the body's production of hemoglobin. Low levels of hemoglobin lead to a shortage of mature red blood cells and a lack of oxygen in the body. Affected people have anemia, which can cause paleness, weakness, fatigue, and more serious complications. Severe beta-thalassemia is called thalassemia major or Cooleys anemia. Thalassemia intermedia is a less severe form. Beta-thalassemia is caused by mutations in the HBB gene and is usually inherited in an autosomal recessive manner. People who have only one HBB gene mutation may have no symptoms or develop mild symptoms, and are said to have thalassemia minor. Treatment depends on the severity in each person and may include transfusions, folic acid supplementation, iron chelation, and/or bone marrow transplantation (the only definitive cure). | |
What are the symptoms of Beta-thalassemia ? | What are the signs and symptoms of Beta-thalassemia? The Human Phenotype Ontology provides the following list of signs and symptoms for Beta-thalassemia. 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 heme biosynthetic pathway 90% Hypersplenism 90% Pallor 90% Splenomegaly 90% Abnormality of iron homeostasis 50% Abnormality of temperature regulation 50% Abnormality of the genital system 50% Abnormality of the teeth 50% Behavioral abnormality 50% Biliary tract abnormality 50% Depressed nasal bridge 50% Feeding difficulties in infancy 50% Genu valgum 50% Hepatomegaly 50% Malabsorption 50% Malar prominence 50% Muscle weakness 50% Paresthesia 50% Reduced bone mineral density 50% Respiratory insufficiency 50% Upslanted palpebral fissure 50% Abnormality of color vision 7.5% Abnormality of the thorax 7.5% Anterior hypopituitarism 7.5% Arthralgia 7.5% Bone marrow hypocellularity 7.5% Cataract 7.5% Cirrhosis 7.5% Diabetes mellitus 7.5% Elevated hepatic transaminases 7.5% Hearing impairment 7.5% Hypertrophic cardiomyopathy 7.5% Hypoparathyroidism 7.5% Hypothyroidism 7.5% Neoplasm of the liver 7.5% Nyctalopia 7.5% Primary adrenal insufficiency 7.5% Pulmonary hypertension 7.5% Skeletal dysplasia 7.5% Skin ulcer 7.5% Sudden cardiac death 7.5% Thrombocytopenia 7.5% Thrombophlebitis 7.5% Visual impairment 7.5% Hypochromic microcytic anemia - Reduced beta/alpha synthesis ratio - 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 Beta-thalassemia inherited ? | How is beta-thalassemia inherited? Beta-thalassemia major and beta-thalassemia intermedia are usually inherited in an autosomal recessive manner, which means both copies of the HBB gene in each cell have mutations. The parents of a person with an autosomal recessive condition each carry one copy of the mutated gene and are referred to as carriers. When two carriers have children, each child has a 25% (1 in 4) chance to be affected, a 50% (1 in 2) chance to be a carrier like each parent, and a 25% (1 in 4) chance to be unaffected and not be a carrier. Sometimes, people with only one HBB gene mutation in each cell (carriers) do have mild anemia. These people are said to have 'beta-thalassemia minor' or 'beta-thalassemia trait.' In a small percentage of families, the condition is inherited in an autosomal dominant manner. In these cases, one mutated copy of the gene in each cell is enough to cause the signs and symptoms of beta-thalassemia. | |
What is (are) Sneddon syndrome ? | Sneddon syndrome is a progressive condition characterized by livedo reticularis (bluish net-like patterns of discoloration on the skin) and neurological abnormalities. Symptoms may include headache, dizziness, high blood pressure, heart disease, mini-strokes and/or stroke. Reduced blood flow to the brain may cause lesions to develop within the central nervous system. This can lead to reduced mental capacity, memory loss and other neurological symptoms. The exact cause of Sneddon syndrome is unknown. Some familial cases have been described. It has also been associated with obliterating vasculitis and antiphospholipid antibody syndrome. | |
What are the symptoms of Sneddon syndrome ? | What are the signs and symptoms of Sneddon syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Sneddon 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) Behavioral abnormality 90% Cerebral ischemia 90% Cutis marmorata 90% Memory impairment 90% Migraine 90% Vertigo 90% Acrocyanosis 50% Amaurosis fugax 50% Developmental regression 50% Hemiplegia/hemiparesis 50% Hypertension 50% Muscle weakness 50% Neurological speech impairment 50% Visual impairment 50% Autoimmunity 7.5% Chorea 7.5% Intracranial hemorrhage 7.5% Nephropathy 7.5% Seizures 7.5% Tremor 7.5% Antiphospholipid antibody positivity - Autosomal dominant inheritance - Dysarthria - Facial palsy - Headache - Hemiplegia - Mental deterioration - Progressive - Sporadic - Stroke - 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 Sneddon syndrome ? | What causes Sneddon syndrome? The cause of Sneddon syndrome is not well understood. It is possible that the syndrome has more than one cause (or way in which it may develop in a person). Some people develop Sneddon syndrome in association with other medical conditions such as obliterating vasculitis and antiphospholipid antibody syndrome. Most cases of Sneddon syndrome occur in people with no other family history of the condition, however there have been a few families with more than one member affected. A recent study found that in one family, Sneddon syndrome developed as a result of inheriting two changes in the CECR1 gene. In this family, Sneddon syndrome was inherited in an autosomal recessive fashion. Other case reports of familial Sneddon syndrome suggest an autosomal dominant pattern of inheritance. It is not currently known if all familial cases are due to changes in CECR1. Currently there is a research study titled, Genetics, Pathophysiology, and Treatment of Recessive Autoinflammatory Diseases, which is studying the effects of CECR1 gene mutations. The study lead is Dr. Daniel Kastner of the National Human Genome Research Institute. Click on the study title to learn more. |
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