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These resources address the diagnosis or management of GM1 gangliosidosis: - Genetic Testing Registry: Gangliosidosis GM1 type 3 - Genetic Testing Registry: Gangliosidosis generalized GM1 type 1 - Genetic Testing Registry: Infantile GM1 gangliosidosis - Genetic Testing Registry: Juvenile GM>1< gangliosidosis These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
What causes dentinogenesis imperfecta? Mutations in the DSPP gene cause dentinogenesis imperfecta. The DSPP gene provides instructions for making three proteins that are essential for normal tooth development. These proteins are involved in the formation of dentin, which is a bone-like substance that makes up the protective middle layer of each tooth. DSPP mutations alter the proteins made from the gene, leading to the production of abnormally soft dentin. Teeth with defective dentin are discolored, weak, and more likely to decay and break. It is unclear how DSPP mutations are related to hearing loss in some families with dentinogenesis imperfecta type II.
Is genetic testing available for systemic scleroderma? Because systemic scleroderma is not caused by a mutation in any one specific gene, clinical genetic testing to confirm a diagnosis or identify a "carrier" is not currently available. Even if someone is known to carry a version of a gene that may make them susceptible to the condition, it does not mean they will definitely develop the condition. You can view a list of centers that may be involved in research projects on systemic scleroderma on Orphanet's Web site. You can also view a list of clinical trials involving people with systemic scleroderma on ClinicalTrials.gov. People interested in learning more about genes and genetic testing for systemic scleroderma should speak with a genetics professional.
Retinitis pigmentosa is one of the most common inherited diseases of the retina (retinopathies). It is estimated to affect 1 in 3,500 to 1 in 4,000 people in the United States and Europe.
Li-Fraumeni syndrome is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to increase the risk of developing cancer. In most cases, an affected person has a parent and other family members with cancers characteristic of the condition.
This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition.
Treatment of gastroparesis depends on the severity of the persons symptoms. In most cases, treatment does not cure gastroparesis, which is usually a chronic, or long-lasting, condition. Gastroparesis is also a relapsing conditionthe symptoms can come and go for periods of time. Treatment helps people manage the condition so they can be as comfortable and active as possible.
Annular atrophic lichen planus (LP) is a rare form of lichen planus, which is a condition that affects the skin and/or mouth. In annular atrophic LP, specifically, affected people develop skin lesions with features of both annular LP and atrophic LP - ring-shaped, slightly raised, purple lesions with central atrophy (tissue breakdown). Although these lesions can be found anywhere on the body, they most commonly affect the trunk and legs. The exact underlying cause of annular atrophic LP is unknown. Treatment is not always necessary as some cases of annular atrophic LP resolve on their own. Mild cases that are diagnosed early can often be managed with topical steroids, while more intensive therapies may be required for severe cases.
Most people with a 15q13.3 microdeletion are missing a sequence of about 2 million DNA building blocks (base pairs), also written as 2 megabases (Mb), at position q13.3 on chromosome 15. The exact size of the deleted region varies, but it typically contains at least six genes. This deletion usually affects one of the two copies of chromosome 15 in each cell. The signs and symptoms that can result from a 15q13.3 microdeletion are probably related to the loss of one or more genes in this region. However, it is unclear which missing genes contribute to the specific features of the disorder. Because some people with a 15q13.3 microdeletion have no obvious signs or symptoms, researchers believe that other genetic or environmental factors may also be involved.
These resources address the diagnosis or management of CASK-related intellectual disability: - Gene Review: Gene Review: CASK-Related Disorders - Genetic Testing Registry: Mental retardation and microcephaly with pontine and cerebellar hypoplasia These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
Hereditary spastic paraplegia (HSP), also called familial spastic paraparesis (FSP), refers to a group of inherited disorders that are characterized by progressive weakness and spasticity (stiffness) of the legs. Early in the disease course, there may be mild gait difficulties and stiffness. These symptoms typically slowly progress so that eventually individuals with HSP may require the assistance of a cane, walker, or wheelchair. Though the primary features of "pure" HSP are progressive lower limb spasticity and weakness, complicated forms may be accompanied by other symptoms. These additional symptoms include impaired vision due to cataracts and problems with the optic nerve and retina of the eye, ataxia (lack of muscle coordination), epilepsy, cognitive impairment, peripheral neuropathy, and deafness. The diagnosis of HSP is primarily by neurological examination and testing to rule out other disorders. Brain MRI abnormalities, such as a thin corpus callosum, may be seen in some of the complicated forms of HSP. Several genetic mutations have been identified which underlie various forms of HSP, and specialized genetic testing and diagnosis are available at some medical centers. HSP has several forms of inheritance. Not all children in a family will necessarily develop symptoms, although they may be carriers of the abnormal gene. Symptoms may begin in childhood or adulthood, depending on the particular HSP gene involved.
Juvenile Batten disease is the most common type of NCL, but its exact prevalence is unknown. Collectively, all forms of NCL affect an estimated 1 in 100,000 individuals worldwide. NCLs are more common in Finland, where approximately 1 in 12,500 individuals are affected.
These resources address the diagnosis or management of hyperprolinemia: - Baby's First Test - Genetic Testing Registry: Deficiency of pyrroline-5-carboxylate reductase - Genetic Testing Registry: Proline dehydrogenase deficiency These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
Metabolic syndrome is a grouping of traits and medical conditions that puts people at risk for both heart disease and type 2 diabetes. It is defined by the National Cholesterol Education Program as having any three of the following five traits and medical conditions: Traits and Medical Conditions Definition Elevated waist circumference Waist measurement of - 40 inches or more in men - 35 inches or more in women Elevated levels of triglycerides - 150 mg/dL or higher or Taking medication for elevated triglyceride levels Low levels of HDL (good) cholesterol - Below 40 mg/dL in men - Below 50 mg/dL in women or Taking medication for low HDL cholesterol levels Elevated blood pressure levels - 130 mm Hg or higher for systolic blood pressure or - 85 mm Hg or higher for diastolic blood pressure or Taking medication for elevated blood pressure levels Elevated fasting blood glucose levels - 100 mg/dL or higher or Taking medication for elevated blood glucose levels
How might Gerstmann-Straussler-Scheinker disease be treated? The treatment of Gerstmann-Straussler-Scheinker disease (GSS) is based on the signs and symptoms present in each person. There is currently no cure for the condition and no known treatments to slow its progression. GeneReviews' Web site offers more specific information about the treatment and management of GSS and other genetic prion diseases. Please click on the link to access this resource.
Summary : Protein is in every cell in the body. Our bodies need protein from the foods we eat to build and maintain bones, muscles and skin. We get proteins in our diet from meat, dairy products, nuts, and certain grains and beans. Proteins from meat and other animal products are complete proteins. This means they supply all of the amino acids the body can't make on its own. Plant proteins are incomplete. You must combine different types of plant proteins to get all of the amino acids your body needs. It is important to get enough dietary protein. You need to eat protein every day, because your body doesn't store it the way it stores fats or carbohydrates. How much you need depends on your age, sex, health, and level of physical activity. Most Americans eat enough protein in their diet.
Diphtheria is a serious bacterial infection. You can catch it from a person who has the infection and coughs or sneezes. You can also get infected by coming in contact with an object, such as a toy, that has bacteria on it. Diphtheria usually affects the nose and throat. Symptoms include - Sore throat - Swollen glands in the neck - Fever - Weakness Your doctor will diagnose it based on your signs and symptoms and a lab test. Getting treatment for diphtheria quickly is important. If your doctor suspects that you have it, you'll start treatment before the lab tests come back. Treatment is with antibiotics. The diphtheria, pertussis, and tetanus vaccine can prevent diphtheria, but its protection does not last forever. Children need another dose, or booster, at about age 12. Then, as adults, they should get a booster every 10 years. Diphtheria is very rare in the United States because of the vaccine. Centers for Disease Control and Prevention
Hereditary antithrombin deficiency is typically inherited in an autosomal dominant pattern, which means one altered copy of the SERPINC1 gene in each cell is sufficient to cause the disorder. Inheriting two altered copies of this gene in each cell is usually incompatible with life; however, a few severely affected individuals have been reported with mutations in both copies of the SERPINC1 gene in each cell.
This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition.
Congenital afibrinogenemia is a rare condition that occurs in approximately 1 in 1 million newborns.
Some forgetfulness can be a normal part of aging. However, some people have more memory problems than other people their age. This condition is called mild cognitive impairment, or MCI. People with MCI can take care of themselves and do their normal activities. MCI memory problems may include - Losing things often - Forgetting to go to events and appointments - Having more trouble coming up with words than other people of the same age Memory problems can also have other causes, including certain medicines and diseases that affect the blood vessels that supply the brain. Some of the problems brought on by these conditions can be managed or reversed. Your health care provider can do thinking, memory, and language tests to see if you have MCI. You may also need to see a specialist for more tests. Because MCI may be an early sign of Alzheimer's disease, it's really important to see your health care provider every 6 to 12 months. At this time, there is no proven drug treatment for MCI. Your health care provider can check to see if you have any changes in your memory or thinking skills over time. NIH: National Institute on Aging
These resources address the diagnosis or management of tetrahydrobiopterin deficiency: - Baby's First Test: Biopterin Defect in Cofactor Biosynthesis - Baby's First Test: Biopterin Defect in Cofactor Regeneration - Genetic Testing Registry: 6-pyruvoyl-tetrahydropterin synthase deficiency - Genetic Testing Registry: Dihydropteridine reductase deficiency - Genetic Testing Registry: GTP cyclohydrolase I deficiency - Genetic Testing Registry: Hyperphenylalaninemia, BH4-deficient, D - MedlinePlus Encyclopedia: Serum Phenylalanine Screening These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
Health history can affect the risk of gastrointestinal carcinoid tumors. Anything that increases a person's chance of developing a disease is called a risk factor. Having a risk factor does not mean that you will get cancer; not having risk factors doesnt mean that you will not get cancer. Talk to your doctor if you think you may be at risk. Risk factors for GI carcinoid tumors include the following: - Having a family history of multiple endocrine neoplasia type 1 (MEN1) syndrome or neurofibromatosis type 1 (NF1) syndrome. - Having certain conditions that affect the stomach's ability to make stomach acid, such as atrophic gastritis, pernicious anemia, or Zollinger-Ellison syndrome.
The outlook for individuals with dysautonomia depends on the particular diagnostic category. People with chronic, progressive, generalized dysautonomia in the setting of central nervous system degeneration have a generally poor long-term prognosis. Death can occur from pneumonia, acute respiratory failure, or sudden cardiopulmonary arrest.
Certain diseases and disorders can increase the risk of childhood liver cancer. Anything that increases your chance of getting a disease is called a risk factor. Having a risk factor does not mean that you will get cancer; not having risk factors doesnt mean that you will not get cancer. Talk with your childs doctor if you think your child may be at risk. Risk factors for hepatoblastoma include the following syndromes or conditions: - Aicardi syndrome. - Beckwith-Wiedemann syndrome. - Familial adenomatous polyposis (FAP). - Glycogen storage disease. - A very low weight at birth. - Simpson-Golabi-Behmel syndrome. - Certain genetic changes, such as Trisomy 18. Risk factors for hepatocellular carcinoma include the following syndromes or conditions: - Alagille syndrome. - Glycogen storage disease. - Hepatitis B virus infection that was passed from mother to child at birth. - Progressive familial intrahepatic disease. - Tyrosinemia. Some patients with tyrosinemia or progressive familial intrahepatic disease will have a liver transplant before there are signs or symptoms of cancer.
HNSCC is the seventh most common cancer worldwide. Approximately 600,000 new cases are diagnosed each year, including about 50,000 in the United States. HNSCC occurs most often in men in their 50s or 60s, although the incidence among younger individuals is increasing.
What are the signs and symptoms of Gardner-Diamond syndrome? People with Gardner-Diamond syndrome have reported that bruises occur either spontaneously or after trauma or surgery (even at other sites of the body). Some people are able to pinpoint exactly when the bruising occurred, while others are not. Episodes of bruising may begin with sensations such as burning, stinging or pain, and may be accompanied by a general feeling of malaise or fatigue. This may be followed by warmth, puffiness, redness and/or itching over the affected area. In some cases, episodes may also be accompanied by fever, headache, or gastrointestinal symptoms. Sometimes, pain and swelling is severe enough to cause immobilization of the affected body part. People have reported that the pain generally subsides when the bruises appear. Bruises typically go away in approximately 7-10 days. However, relapses and remissions of bruising episodes can last for many years. In some cases, symptoms of the condition persist and may worsen. Subsequent episodes are most likely to occur after some sort of physical trauma or stress.
Is genetic testing available for Danon disease? Yes. GeneTests lists laboratories offering clinical genetic testing for Danon disease. Clinical genetic tests are ordered to help diagnose a person or family and to aid in decisions regarding medical care or reproductive issues. Talk to your health care provider or a genetic professional to learn more about your testing options. Click on the link above to view a list of testing laboratories.
PDGFRA-associated chronic eosinophilic leukemia is a rare condition; however, the exact prevalence is unknown.
These resources address the diagnosis or management of glycogen storage disease type IV: - Gene Review: Gene Review: Glycogen Storage Disease Type IV - Genetic Testing Registry: Glycogen storage disease, type IV - MedlinePlus Encyclopedia: Dilated Cardiomyopathy - MedlinePlus Encyclopedia: Failure to Thrive These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
Aceruloplasminemia has been seen worldwide, but its overall prevalence is unknown. Studies in Japan have estimated that approximately 1 in 2 million adults in this population are affected.
Sepsis is a serious illness. It happens when your body has an overwhelming immune response to a bacterial infection. The chemicals released into the blood to fight the infection trigger widespread inflammation. This leads to blood clots and leaky blood vessels. They cause poor blood flow, which deprives your body's organs of nutrients and oxygen. In severe cases, one or more organs fail. In the worst cases, blood pressure drops and the heart weakens, leading to septic shock. Anyone can get sepsis, but the risk is higher in - People with weakened immune systems - Infants and children - The elderly - People with chronic illnesses, such as diabetes, AIDS, cancer, and kidney or liver disease - People suffering from a severe burn or physical trauma Common symptoms of sepsis are fever, chills, rapid breathing and heart rate, rash, confusion, and disorientation. Doctors diagnose sepsis using a blood test to see if the number of white blood cells is abnormal. They also do lab tests that check for signs of infection. People with sepsis are usually treated in hospital intensive care units. Doctors try to treat the infection, sustain the vital organs, and prevent a drop in blood pressure. Many patients receive oxygen and intravenous fluids. Other types of treatment, such as respirators or kidney dialysis, may be necessary. Sometimes, surgery is needed to clear up an infection. NIH: National Institute of General Medical Sciences
Robinow syndrome is a rare disorder that affects the bones as well as other parts of the body. Two forms of Robinow syndrome have been described: autosomal recessive Robinow syndrome, and the milder autosomal dominant Robinow syndrome. They are distinguished based on their modes of inheritance, symptoms, and severity. Autosomal recessive Robinow syndrome causes shortening of the long bones in the arms and legs; short fingers and toes; wedge-shaped spinal bones leading to kyphoscoliosis; fused or missing ribs; short stature; and distinctive facial features. Other features may include underdeveloped genitalia; dental problems; kidney or heart defects; or delayed development. This form is caused by mutations in the ROR2 gene. Autosomal dominant Robinow syndrome causes more mild, but similar, features. There are rarely spine and rib abnormalities, and short stature is less severe. A variant type of this form is additionally characterized by osteosclerosis. Autosomal dominant Robinow syndrome may be caused by a mutation in the WNT5A or DVL1 gene. In some cases, the underlying cause of Robinow syndrome is unknown. Management may include bracing or surgery for skeletal abnormalities and growth hormone to increase growth rate in affected children.
Familial hemophagocytic lymphohistiocytosis may be caused by mutations in any of several genes. These genes provide instructions for making proteins that help destroy or deactivate lymphocytes that are no longer needed. By controlling the number of activated lymphocytes, these genes help regulate immune system function. Approximately 40 to 60 percent of cases of familial hemophagocytic lymphohistiocytosis are caused by mutations in the PRF1 or UNC13D genes. Smaller numbers of cases are caused by mutations in other known genes. In some affected individuals, the genetic cause of the disorder is unknown. The gene mutations that cause familial hemophagocytic lymphohistiocytosis impair the body's ability to regulate the immune system. These changes result in the exaggerated immune response characteristic of this condition.
This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. In almost all cases, the parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene but typically do not show signs and symptoms of the condition. One individual with Donnai-Barrow syndrome was found to have inherited both copies of the mutated gene from his father as a result of a genetic change called uniparental disomy (UPD). UPD occurs when a person receives two copies of a chromosome, or part of a chromosome, from one parent and no copies from the other parent. UPD can occur as a random event during the formation of egg or sperm cells or may happen in early fetal development.
PRS superactivity is believed to be a rare disorder. Approximately 30 families with the condition have been reported. More than two thirds of these families are affected by the milder form of the disease.
How is Hallermann-Streiff syndrome inherited? The majority of cases of Hallermann-Streiff syndrome appear to be sporadic (occurring in individuals with no history of the condition in the family). There have been reports of affected individuals having multiple, unaffected children. Although some have reported it appears to be inherited in an autosomal recessive manner in a small number of cases, others have argued that there is little evidence for this being a recessively inherited disorder. Therefore, the mode of inheritance of the condition remains unclear.
Hennekam syndrome is a rare condition that affects the lymphatic system. Signs and symptoms of the condition are generally noticeable at birth and vary significantly from person to person, even within the same family. Affected people generally experience lymphangiectasia (lymphatic vessels that are abnormally expanded), lymphedema, and distinctive facial features (i.e. a flattened appearance to the middle of the face, puffy eyelids, widely spaced eyes, small ears, and a small mouth). Other common features include intellectual disability, growth delay, respiratory problems, camptodactyly (permanently bent fingers and toes) and cutaneous syndactyly (fusion of the skin between the fingers and toes). Hennekam syndrome is caused by changes (mutations) in the CCBE1 or FAT4 genes and is inherited in an autosomal recessive manner. Treatment is based on the signs and symptoms present in each person.
47, XYY syndrome is a condition in males characterized by features that occur due to having an extra copy of the Y chromosome in each cell. Signs and symptoms can vary and range from barely noticeable to more severe; many men with the extra Y chromosome are completely unaware of its presence. Appearance and intelligence are usually normal, but learning disabilities may be present. Other signs and symptoms may include autism spectrum disorder (usually on the milder end); speech or motor delay; low muscle tone; asthma; tall stature; impaired social skills; ADHD; and/or anxiety or mood disorders. While sexual development and infertility is usually normal, some adolescents and adults have testicular failure. 47, XYY syndrome usually is not inherited, occurring due to a random event in the formation of a sperm cell prior to conception. Management depends on the symptoms in each person and may include intervention or therapies for developmental delays, behavior or mood disorders; and/or special education.
Platyspondylic lethal skeletal dysplasia, Torrance type is a severe disorder of bone growth. People with this condition have very short arms and legs, underdeveloped pelvic bones, and unusually short fingers and toes (brachydactyly). This disorder is also characterized by flattened spinal bones (platyspondyly) and an exaggerated curvature of the lower back (lordosis). Infants with this condition are born with a small chest with short ribs that can restrict the growth and expansion of the lungs. As a result of these serious health problems, some affected fetuses do not survive to term. Infants born with platyspondylic lethal skeletal dysplasia, Torrance type usually die at birth or shortly thereafter from respiratory failure. A few affected people with milder signs and symptoms have lived into adulthood.
These resources address the diagnosis or management of gray platelet syndrome: - Genetic Testing Registry: Gray platelet syndrome - National Heart Lung and Blood Institute: How is Thrombocytopenia Treated? These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
Pearson marrow-pancreas syndrome is generally not inherited but arises from new (de novo) mutations that likely occur in early embryonic development.
The National Institute of Neurological Disorders and Stroke (NINDS) conducts research related to brain abnormalities and disorders of the nervous system such as arachnoid cysts in laboratories at the National Institutes of Health (NIH), and supports additional research through grants to major medical institutions across the country. Much of this research focuses on finding better ways to prevent, treat, and ultimately cure neurological disorders such as arachnoid cysts.
These resources address the diagnosis or management of Lesch-Nyhan syndrome: - Gene Review: Gene Review: Lesch-Nyhan Syndrome - Genetic Testing Registry: Lesch-Nyhan syndrome - MedlinePlus Encyclopedia: Lesch-Nyhan Syndrome - MedlinePlus Encyclopedia: Uric Acid Crystals These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
Mondini dysplasia is a type of inner ear malformation that is present at birth (congenital). Individuals with Mondini dysplasia have one and a half coils of the cochlea instead of the normal two coils. It may occur in one ear (unilateral) or both ears (bilateral) and can cause varying degrees of sensorineural hearing loss, although most individuals have profound hearing loss. The condition can also predispose affected individuals to recurrent meningitis. It is caused by disruption in the embryonic development of the inner ear during the seventh week of gestation. The condition may be isolated (occurring with no other conditions or malformations) or may occur with other ear malformations or a number of syndromes. Treatment options may include surgical repair of the defect to prevent recurrent meningitis; amplification aids for those with residual hearing; and cochlear implantation.
How is hereditary lymphedema type II inherited? Hereditary lymphedema type II appears to have an autosomal dominant pattern of inheritance, which means that one copy of an altered gene in each cell is sufficient to cause the disorder. People with hereditary lymphedema type II usually have at least one other affected family member, in most cases, a parent. When the condition occurs in only one person in a family, the condition is described as Meige-like lymphedema.
Summary : Pulmonary rehabilitation (rehab) is a medically supervised program to help people who have chronic breathing problems, including - COPD (chronic obstructive pulmonary disease) - Sarcoidosis - Idiopathic pulmonary fibrosis - Cystic fibrosis During pulmonary rehab you may do exercise training and learn breathing techniques. You'll also get tips on conserving your energy and advice on nutrition and coping. These can't cure your lung disease or completely ease your breathing problems. But it can help you function better in your daily life. NIH: National Heart, Lung, and Blood Institute
- Mutations in single genes can cause rare forms of diabetes. - Genetic testing can identify many forms of monogenic diabetes. - A physician evaluates whether genetic testing is appropriate. - A correct diagnosis aided by genetic testing can lead to optimal treatment. - Recent research results show that people with certain forms of monogenic diabetes can be treated with oral diabetes medications instead of insulin injections.
Amyotrophic lateral sclerosis (ALS) is a nervous system disease that attacks nerve cells called neurons in your brain and spinal cord. These neurons transmit messages from your brain and spinal cord to your voluntary muscles - the ones you can control, like in your arms and legs. At first, this causes mild muscle problems. Some people notice - Trouble walking or running - Trouble writing - Speech problems Eventually, you lose your strength and cannot move. When muscles in your chest fail, you cannot breathe. A breathing machine can help, but most people with ALS die from respiratory failure. The disease usually strikes between age 40 and 60. More men than women get it. No one knows what causes ALS. It can run in families, but usually it strikes at random. There is no cure. Medicines can relieve symptoms and, sometimes, prolong survival. NIH: National Institute of Neurological Disorders and Stroke
How might Tylosis with esophageal cancer be treated? Affected individuals may have periodic endoscopic and oral cavity evaluations by a gastroentrologist to detect esophageal cancer. For the palmoplantar keratoderma, a dermatologist may recommend oral retinoids such as etretinate, isotretinoin, and acitretin. Topical therapies may include soaking in salt water and then gentle removal of dead tissue (debridement) and 50% propylene glycol in water under plastic dressing overnight weekly.
How might Lafora disease be treated? Unfortunately, there is currently no cure for Lafora disease or way to slow the progression of the condition. Treatment is based on the signs and symptoms present in each person. For example, certain medications may be recommended to managed generalized seizures. In the advanced stages of the condition, a gastrostomy tube may be placed for feeding. Drugs that are known to worsen myoclonus (i.e. phenytoin) are generally avoided. GeneReview's Web site offers more specific information regarding the treatment and management of Lafora disease. Please click on the link to access this resource.
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).
When you play the piano or hit a tennis ball you are activating the cerebellum. The cerebellum is the area of the brain that controls coordination and balance. Problems with the cerebellum include - Cancer - Genetic disorders - Ataxias - failure of muscle control in the arms and legs that result in movement disorders - Degeneration - disorders caused by brain cells decreasing in size or wasting away Treatment of cerebellar disorders depends on the cause. In some cases, there is no cure but treatment may help with symptoms. NIH: National Institute of Neurological Disorders and Stroke
How might primary melanoma of the small intestine be diagnosed? A variety of tests may be involved in the initial diagnosis of the tumor, including contrast radiography, endoscopy, and CT scan. The tumor is confirmed by surgical resection. Careful study of tissue samples from the tumor under a microscope will show the same immunohistochemical characteristics of skin melanomas. Once this has been established, the following are proposed diagnostic criteria for primary melanoma of the small intestine: 1. The absence of a previous or synchronously resected melanoma or atypical melanocytic lesion of the skin. 2. The absence of metastatic spread to other organs. 3. The presence of intramucosal lesions of the overlying or adjacent intestinal mucosa.
Certain factors affect treatment options and prognosis (chance of recovery). The treatment options may depend on the following: - The number of hairy (leukemia) cells and healthy blood cells in the blood and bone marrow. - Whether the spleen is swollen. - Whether there are signs or symptoms of leukemia, such as infection. - Whether the leukemia has recurred (come back) after previous treatment. The prognosis (chance of recovery) depends on the following: - Whether the hairy cell leukemia does not grow or grows so slowly it does not need treatment. - Whether the hairy cell leukemia responds to treatment. Treatment often results in a long-lasting remission (a period during which some or all of the signs and symptoms of the leukemia are gone). If the leukemia returns after it has been in remission, retreatment often causes another remission.
How is ornithine transcarbamylase (OTC) deficiency inherited? Ornithine transcarbamylase (OTC) deficiency is an X-linked disorder. A condition is considered X-linked if the mutated gene that causes the disorder is located on the X chromosome, one of the two sex chromosomes. A characteristic of X-linked inheritance is that fathers cannot pass X-linked traits to their sons. In males (who have only one X chromosome), one altered copy of the gene in each cell is sufficient to cause the condition. In females (who have two X chromosomes), mutations in both copies of the gene will cause the disorder. Some females with only one altered copy of the OTC gene also show signs and symptoms of OTC deficiency.
This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition.
Scientists have not yet found a way to prevent Alagille syndrome. However, complications of the disorder can be managed with the help of health care providers. Routine visits with a health care team are needed to prevent complications from becoming worse.
Microcystic adnexal carcinoma is a rare tumor of the skin that most often develops in the head and neck region, particularly in the middle of the face, though it may occur in the skin of other parts of the body as well. The average age of diagnosis is 56. This tumor is often first noticed as a bump or yellowish spot in the skin. Though microcystic adnexal carcinomas frequently grow into and disturb nearby tissues and is therefore considered an invasive cancer, this type of tumor rarely spreads to more distant parts of the body (metastasizes). The main treatment for microcystic adnexal carcinoma is Mohs micrographic surgery, which is thought to improve the chances that all of the tumor cells are removed during surgery.
How might mitochondrial neurogastrointestinal encephalopathy syndrome be diagnosed? The clinical diagnosis of mitochondrial neurogastrointestinal encephalopathy syndrome (MNGIE) is based on the presence of severe gastrointestinal dysmotility (when the muscles and nerves of the digestive system do not move food through the digestive tract efficiently), cachexia (wasting away of muscle and fat tissue), ptosis, external ophthalmoplegia (weakness in the muscles that control eye movement), sensorimotor neuropathy, asymptomatic leukoencephalopathy (observed on brain MRI), and a family history consistent with autosomal recessive inheritance. Direct evidence of MNGIE syndrome can be provided by one of the following: A blood test showing an increase in plasma thymidine concentration (greater than 3 mol/L) and an increase in plasma deoxyuridine concentration (greater than 5 mol/L). This is sufficient to make the diagnosis of MNGIE disease. Thymidine phosphorylase enzyme activity in leukocytes (white blood cells) less than 10% of the control mean. Genetic testing of TYMP, the gene for thymidine phosphorylase (the enzyme deficient in individuals with MNGIE syndrome), detects mutations in approximately all of affected individuals.
What are the signs and symptoms of Nail dysplasia, isolated congenital? The Human Phenotype Ontology provides the following list of signs and symptoms for Nail dysplasia, isolated congenital. 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 - Concave nail - 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 signs and symptoms of Neutropenia lethal congenital with eosinophilia? The Human Phenotype Ontology provides the following list of signs and symptoms for Neutropenia lethal congenital with eosinophilia. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Autosomal recessive inheritance - Congenital neutropenia - Eosinophilia - Neonatal death - 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.
The prevalence of CCFDN is unknown. The disorder has been identified in about 150 individuals of Romani ethnicity. Thus far, no affected individuals have been observed outside this community.
DMD-associated dilated cardiomyopathy appears to be an uncommon condition, although its prevalence is unknown.
Charcot-Marie-Tooth disease (CMT) is a group of genetic nerve disorders. It is named after the three doctors who first identified it. In the United States, CMT affects about 1 in 2,500 people. CMT affects your peripheral nerves. Peripheral nerves carry movement and sensation signals between the brain and spinal cord and the rest of the body. Symptoms usually start around the teen years. Foot problems such as high arches or hammertoes can be early symptoms. As CMT progresses, your lower legs may weaken. Later, your hands may also become weak. Doctors diagnose CMT by doing a neurologic exam, nerve tests, genetic tests, or a nerve biopsy. There is no cure. The disease can be so mild you don't realize you have it or severe enough to make you weak. Physical therapy, occupational therapy, braces and other devices and sometimes surgery can help. NIH: National Institute of Neurological Disorders and Stroke
What are the signs and symptoms of Chronic active Epstein-Barr virus infection? The Human Phenotype Ontology provides the following list of signs and symptoms for Chronic active Epstein-Barr virus infection. 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 - Bronchiectasis - Fever - Pneumonia - Sinusitis - Splenomegaly - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common.
Chronic active Epstein-Barr virus infection is a rare condition in which the body makes too many lymphocytes, a type of white blood cell. Lymphocytes are an important part of the immune system because they help fight off diseases and protect the body from infection. About 95% of adults are infected with Epstein-Barr virus (EBV). Most infections occur during childhood and do not cause any symptoms. EBV infection in adolescents or young adults can often result in infectious mononucleosis. Rarely, people infected with EBV develop a life-threatening condition called chronic active EBV virus (CAEBV). Patients with CAEBV most often have fever, liver dysfunction, an enlarged spleen (splenomegaly), swollen lymph nodes (lymphadenopathy), and low numbers of platelets (thrombocytopenia). Hematopoietic stem cell transplantation has shown promise in the treatment of CAEBV.
Your elbow joint is made up of bone, cartilage, ligaments and fluid. Muscles and tendons help the elbow joint move. When any of these structures is hurt or diseased, you have elbow problems. Many things can make your elbow hurt. A common cause is tendinitis, an inflammation or injury to the tendons that attach muscle to bone. Tendinitis of the elbow is a sports injury, often from playing tennis or golf. You may also get tendinitis from overuse of the elbow. Other causes of elbow pain include sprains, strains, fractures, dislocations, bursitis and arthritis. Treatment depends on the cause.
An estimated 400 million people worldwide have glucose-6-phosphate dehydrogenase deficiency. This condition occurs most frequently in certain parts of Africa, Asia, and the Mediterranean. It affects about 1 in 10 African American males in the United States.
Prader-Willi syndrome affects an estimated 1 in 10,000 to 30,000 people worldwide.
Renal tubular acidosis with deafness is a rare disorder; its prevalence is unknown.
REN-related kidney disease is an inherited condition that affects kidney function. This condition causes slowly progressive kidney disease that usually becomes apparent during childhood. As this condition progresses, the kidneys become less able to filter fluids and waste products from the body, resulting in kidney failure. Individuals with REN-related kidney disease typically require dialysis (to remove wastes from the blood) or a kidney transplant between ages 40 and 70. People with REN-related kidney disease sometimes have low blood pressure. They may also have mildly increased levels of potassium in their blood (hyperkalemia). In childhood, people with REN-related kidney disease develop a shortage of red blood cells (anemia), which can cause pale skin, weakness, and fatigue. In this disorder, anemia is usually mild and begins to improve during adolescence. Many individuals with this condition develop high blood levels of a waste product called uric acid. Normally, the kidneys remove uric acid from the blood and transfer it to urine so it can be excreted from the body. In REN-related kidney disease, the kidneys are unable to remove uric acid from the blood effectively. A buildup of uric acid can cause gout, which is a form of arthritis resulting from uric acid crystals in the joints. Individuals with REN-related kidney disease may begin to experience the signs and symptoms of gout during their twenties.
The prevalence of congenital myasthenic syndrome is unknown. At least 600 families with affected individuals have been described in the scientific literature.
VLDLR-associated cerebellar hypoplasia is an inherited condition that affects the development of the brain. People with this condition have an unusually small and underdeveloped cerebellum, which is the part of the brain that coordinates movement. This brain malformation leads to problems with balance and coordination (ataxia) that become apparent in infancy and remain stable over time. Children with VLDLR-associated cerebellar hypoplasia may learn to walk later in childhood, usually after the age of 6, although some are never able to walk independently. In one Turkish family, affected people walk on their hands and feet (quadrupedal locomotion). Additional features of VLDLR-associated cerebellar hypoplasia include moderate to profound intellectual disability, impaired speech (dysarthria) or a lack of speech, and eyes that do not look in the same direction (strabismus). Some affected individuals have also had flat feet (pes planus), seizures, and short stature. Studies suggest that VLDLR-associated cerebellar hypoplasia does not significantly affect a person's life expectancy.
What causes Huntington disease? Huntington disease (HD) is caused by a change (mutation) in the HTT gene. This gene gives instructions for making a protein called huntingtin. The exact function of this protein is unclear, but it appears to be important to nerve cells (neurons) in the brain. The HTT gene mutation that causes HD involves a DNA segment known as a CAG trinucleotide repeat. This segment is made up of three DNA building blocks that repeat multiple times in a row. The CAG segment in a normal HTT gene repeats about 10 to 35 times. In people with HD, it may repeat from 36 to over 120 times. People with 36 to 39 CAG repeats (an intermediate size) may or may not develop HD, while people with 40 or more repeats almost always develop HD. An increased number of CAG repeats leads to an abnormally long version of the huntingtin protein. The long protein is then cut into smaller, toxic pieces that end up sticking together and accumulating in neurons. This disrupts the function of the neurons, ultimately causing the features of HD.
These resources address the diagnosis or management of vitamin D-dependent rickets: - Genetic Testing Registry: Vitamin D-dependent rickets, type 1 - Genetic Testing Registry: Vitamin D-dependent rickets, type 2 - Genetic Testing Registry: Vitamin d-dependent rickets, type 2b, with normal vitamin d receptor These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
The National Institute of Neurological Disorders and Stroke (NINDS) conducts research related to dystonia in its laboratories at the National Institutes of Health (NIH) and also supports additional dystonia research through grants to major research institutions across the country. Scientists at other NIH Institutes (National institute on Deafness and Other Communications Disorders, National Eye Institute, and Eunice Kennnedy Shriver National Institute on Child Health and Human Development) also support research that may benefit individuals with dystonia. Investigators believe that the dystonias result from an abnormality in an area of the brain called the basal ganglia, where some of the messages that initiate muscle contractions are processed. Scientists at the NINDS laboratories have conducted detailed investigations of the pattern of muscle activity in persons with dystonias. Studies using EEG analysis and neuroimaging are probing brain activity. The search for the gene or genes responsible for some forms of dominantly inherited dystonias continues.
This condition has an autosomal dominant pattern of inheritance, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In the familial form, an affected person inherits the mutation from one affected parent. Most people with cerebral cavernous malformations have the sporadic form of the disorder. These cases occur in people with no history of the disorder in their family.
These resources address the diagnosis or management of platyspondylic lethal skeletal dysplasia, Torrance type: - Genetic Testing Registry: Platyspondylic lethal skeletal dysplasia Torrance type - MedlinePlus Encyclopedia: Lordosis These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
The prevalence of X-linked spondyloepiphyseal dysplasia tarda is estimated to be 1 in 150,000 to 200,000 people worldwide.
This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person inherits the mutation from one affected parent. Other cases result from new mutations in the gene and occur in people with no history of the disorder in their family.
How is postural orthostatic tachycardia syndrome diagnosed? A diagnosis of postural orthostatic tachycardia syndrome (POTS) is often suspected based on the presence of characteristic signs and symptoms. Additional testing can then be ordered to confirm the diagnosis. Many physicians will conduct a physical examination, including measuring blood pressure and heart rate while lying, sitting, and standing. A tilt table test may also be recommended to help confirm the diagnosis.
The prevalence of uromodulin-associated kidney disease is unknown. It accounts for fewer than 1 percent of cases of kidney disease.
Most cases of juvenile idiopathic arthritis are sporadic, which means they occur in people with no history of the disorder in their family. A small percentage of cases of juvenile idiopathic arthritis have been reported to run in families, although the inheritance pattern of the condition is unclear. A sibling of a person with juvenile idiopathic arthritis has an estimated risk of developing the condition that is about 12 times that of the general population.
Congenital hypothyroidism affects an estimated 1 in 2,000 to 4,000 newborns. For reasons that remain unclear, congenital hypothyroidism affects more than twice as many females as males.
These resources address the diagnosis or management of TH deficiency: - Gene Review: Gene Review: Tyrosine Hydroxylase Deficiency - Genetic Testing Registry: Segawa syndrome, autosomal recessive These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
These resources address the diagnosis or management of Weill-Marchesani syndrome: - Gene Review: Gene Review: Weill-Marchesani Syndrome - Genetic Testing Registry: Weill-Marchesani syndrome - Genetic Testing Registry: Weill-Marchesani syndrome 1 - Genetic Testing Registry: Weill-Marchesani syndrome 2 - Genetic Testing Registry: Weill-Marchesani syndrome 3 These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
Hemochromatosis is one of the most common genetic diseases in the United States. It's most common in Caucasians of Northern European descent. The disease is less common in African Americans, Hispanics, Asians, and American Indians. Primary hemochromatosis is more common in men than in women. Also, older people are more likely to develop the disease than younger people. In fact, signs and symptoms usually don't occur in men until they're 40 to 60 years old. In women, signs and symptoms usually don't occur until after the age of 50 (after menopause). Young children rarely develop hemochromatosis. Inheriting two faulty HFE genes (one from each parent) is the major risk factor for hemochromatosis. However, many people who have two copies of the faulty gene don't develop signs or symptoms of the disease. Alcoholism is another risk factor for hemochromatosis. A family history of certain diseases and conditions also puts you at higher risk for hemochromatosis. Examples of such diseases and conditions include heart attack, liver disease, diabetes, arthritis, and erectile dysfunction (impotence).
One type of surfactant dysfunction, SP-B deficiency, is estimated to occur in 1 in 1 million newborns worldwide. The prevalence of surfactant dysfunction due to other causes is unknown.
Linear scleroderma is one sub-type of localized scleroderma, most commonly occurring in childhood. It is characterized by abnormalities of the skin and subcutaneous tissues that often follow a dermatomal distribution and that are found on one side of the body. Besides the lesion in the face or scalp there are also abnormalities of the muscles, fat tissue and skull. When the face is affected, some strips located on the forehead may be hollow and lead to an appearance termed "en coup de sabre". In most cases, Raynaud's phenomenon is absent. The exact cause is still unknown but may be related to an autoimmune reaction resulting in too much collagen. Management is symptomatic and includes immunosupressant medication. Physical therapy is helpful for the muscle retraction problems.
Schistosomiasis is a disease caused by parasitic worms. Although the worms that cause schistosomiasis are not found in the United States, more than 200 million people are infected worldwide. Infection occurs through contact with contaminated water. The parasite in its infective stages is called a cercaria. It swims freely in open bodies of water. On contact with humans, the parasite burrows into the skin, matures into another stage (schistosomula), then migrates to the lungs and liver, where it matures into the adult form. The adult worm then migrates to its preferred body part (bladder, rectum, intestines, liver, portal venous system (the veins that carry blood from the intestines to liver, spleen, lungs), depending on its species. Schistosomiasis is common in many tropical and subtropical areas worldwide. It can be treated safely and effectively with praziquantel.
The effect of Dandy-Walker Syndrome on intellectual development is variable, with some children having normal cognition and others never achieving normal intellectual development even when the excess fluid buildup is treated early and correctly. Longevity depends on the severity of the syndrome and associated malformations. The presence of multiple congenital defects may shorten life span.
These resources address the diagnosis or management of Lynch syndrome: - American Medical Association and National Coalition for Health Professional Education in Genetics: Understand the Basics of Genetic Testing for Hereditary Colorectal Cancer - Gene Review: Gene Review: Lynch Syndrome - GeneFacts: Lynch Syndrome: Management - Genetic Testing Registry: Hereditary nonpolyposis colorectal cancer type 3 - Genetic Testing Registry: Hereditary nonpolyposis colorectal cancer type 4 - Genetic Testing Registry: Hereditary nonpolyposis colorectal cancer type 5 - Genetic Testing Registry: Hereditary nonpolyposis colorectal cancer type 8 - Genetic Testing Registry: Lynch syndrome - Genetic Testing Registry: Lynch syndrome I - Genetic Testing Registry: Lynch syndrome II - Genomics Education Programme (UK) - MedlinePlus Encyclopedia: Colon Cancer - National Cancer Institute: Genetic Testing for Hereditary Cancer Syndromes These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
Hypopituitarism occurs when the body has low levels of certain hormones made by the pituitary gland. The pituitary gland normally makes several hormones (including growth hormone, thyroid stimulating hormone, adrenocorticotropic hormone, prolactin, follicle stimulating hormone and luteinizing hormone, vasopressin, and oxytocin). These hormones are important for directing body growth and development, and for regulating blood pressure and metabolism. Symptoms of this condition vary and depend on which hormones are affected. Treatment depends on the cause of this condition; once the cause is corrected, medication (hormone replacement therapy) must be taken to provide the body with the normal amount of hormones.
The NINDS supports and conducts research on disorders of the brain and nervous system such as striatonigral degeneration. This research focuses on finding ways to prevent and treat these disorders.
How might leukoencephalopathy with vanishing white matter be treated? Treatment for leukoencephalopathy with vanishing white matter is supportive, aiming to alleviate symptoms. Management may include physical therapy and rehabilitation for motor dysfunction (mainly spasticity and ataxia); and anti-seizure medications for seizures. Infections and fevers should be prevented when possible through the use of vaccinations; low-dose maintenance antibiotics during winter months; antibiotics for minor infections; and antipyretics (fever-reducing medications) for fever. For children, wearing a helmet outside can help minimize the effects of head trauma. Contact sports, head trauma, and stressful situations (including high body temperature) should be avoided. More detailed information about the management of leukoencephalopathy with vanishing white matter is available on the GeneReviews Web site.
Your chances of getting gestational diabetes are higher if you - are overweight - have had gestational diabetes before - have given birth to a baby weighing more than 9 pounds - have a parent, brother, or sister with type 2 diabetes - have prediabetes, meaning your blood glucose levels are higher than normal yet not high enough for a diagnosis of diabetes - are African American, American Indian, Asian American, Hispanic/Latina, or Pacific Islander American - have a hormonal disorder called polycystic ovary syndrome, also known as PCOS
These resources address the diagnosis or management of paroxysmal nocturnal hemoglobinuria: - Duke University School of Medicine: Hemostasis & Thrombosis Center - Genetic Testing Registry: Paroxysmal nocturnal hemoglobinuria - MedlinePlus Encyclopedia: Paroxysmal nocturnal hemoglobinuria (PNH) - Memorial Sloan-Kettering Cancer Center These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseling - Palliative Care
There is no cure for Pelizaeus-Merzbacher disease, nor is there a standard course of treatment. Treatment is symptomatic and supportive and may include medication for movement disorders.
The mission of the National Institute of Neurological Disorders and Stroke (NINDS) is to seek fundamental knowledge abuot the brain and nervous system, and to use that knowledge to reduce the burden of neurological disease. Research supported by the NINDS includes studies to understand how the brain and nervous system normally develop and function and how they are affected by disease and trauma. These studies contribute to a greater understanding of birth defects such as Klippel-Feil Syndrome and open promising new avenues for treatment.