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Epidermolytic hyperkeratosis is a skin disorder that is present at birth. Affected babies may have very red skin (erythroderma) and severe blisters. Because newborns with this disorder are missing the protection provided by normal skin, they are at risk of becoming dehydrated and developing infections in the skin or th...
Certain genetic conditions increase the risk of childhood CNS embryonal tumors. Anything that increases the risk 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 yo...
There is not one specific test to diagnose heart failure. Because the symptoms are common for other conditions, your doctor will determine if you have heart failure by doing a detailed medical history, an examination, and several tests. During a physical exam, a doctor will listen for abnormal heart sounds and lung sou...
LBSL is a rare condition. Its exact prevalence is not known.
If acquired cystic kidney disease is not causing complications, a person does not need treatment. A health care provider will treat infections with antibioticsmedications that kill bacteria. If large cysts are causing pain, a health care provider may drain the cyst using a long needle inserted into the cyst through the...
Hemophilia is a rare disorder in which the blood does not clot normally. It is usually inherited. Hemophilia usually occurs in males. If you have hemophilia, you have little or no clotting factor. Clotting factor is a protein needed for normal blood clotting. Without it, you may bleed for a long time after an injury...
How is SCOT deficiency diagnosed? Diagnosis of SCOT deficiency is made in people showing the signs and symptoms of the condition and who have absent or reduced SCOT enzyme activity.
Spasticity is a condition in which there is an abnormal increase in muscle tone or stiffness of muscle, which might interfere with movement, speech, or be associated with discomfort or pain. Spasticity is usually caused by damage to nerve pathways within the brain or spinal cord that control muscle movement. It may occ...
REN-related kidney disease is a rare condition. At least three families with this condition have been identified.
Gardner-Diamond syndrome (GDS) is a rare condition characterized by episodes of unexplained, painful bruising that mostly occurs on the arms, legs, and/or face. It is most common in Caucasian women who have mental illness or emotional stress. Symptoms typically include the formation of multiple, small, purple bruises t...
This condition is inherited in an X-linked recessive pattern. The gene associated with this condition is located on the X chromosome, which is one of the two sex chromosomes. 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 t...
Kawasaki disease affects children of all races and ages and both genders. It occurs most often in children of Asian and Pacific Island descent. The disease is more likely to affect boys than girls. Most cases occur in children younger than 5 years old. Kawasaki disease is rare in children older than 8.
Manitoba oculotrichoanal syndrome is estimated to occur in 2 to 6 in 1,000 people in a small isolated Ojibway-Cree community in northern Manitoba, Canada. Although this region has the highest incidence of the condition, it has also been diagnosed in a few people from other parts of the world.
All of us worry about things like health, money, or family problems. But people with generalized anxiety disorder (GAD) are extremely worried about these and many other things, even when there is little or no reason to worry about them. They are very anxious about just getting through the day. They think things will al...
This condition is inherited in an X-linked recessive pattern. 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. In males (who have only one X chromosome), one altered copy of the gene in each cell is sufficient to cause the co...
These resources address the diagnosis or management of Axenfeld-Rieger syndrome: - Genetic Testing Registry: Axenfeld-Rieger syndrome type 1 - Genetic Testing Registry: Axenfeld-Rieger syndrome type 2 - Genetic Testing Registry: Axenfeld-Rieger syndrome type 3 - Genetic Testing Registry: Rieger syndrome - Glaucoma...
How is osteochondritis dissecans diagnosed? A diagnosis of osteochondritis dissecans is usually suspected based on the presence of characteristic signs and symptoms. Additional testing can then be ordered to confirm the diagnosis. These test may include x-rays, magnetic resonance imaging (MRI) and/or computed tomograph...
Lesch-Nyhan syndrome is a condition that occurs almost exclusively in males. It is characterized by neurological and behavioral abnormalities and the overproduction of uric acid. Uric acid is a waste product of normal chemical processes and is found in blood and urine. Excess uric acid can be released from the blood an...
Hereditary angioedema is estimated to affect 1 in 50,000 people. Type I is the most common, accounting for 85 percent of cases. Type II occurs in 15 percent of cases, and type III is very rare.
These resources address the diagnosis or management of Noonan syndrome: - Gene Review: Gene Review: Noonan Syndrome - Genetic Testing Registry: Noonan syndrome - Genetic Testing Registry: Noonan syndrome 1 - Genetic Testing Registry: Noonan syndrome 2 - Genetic Testing Registry: Noonan syndrome 3 - Genetic Testin...
A cyst is a fluid-filled sac. There are two types of kidney cysts. Polycystic kidney disease (PKD) runs in families. In PKD, the cysts take the place of the normal tissue. They enlarge the kidneys and make them work poorly, leading to kidney failure. When PKD causes kidneys to fail - which usually happens after man...
What causes autoimmune autonomic ganglionopathy? The cause of autoimmune autonomic ganglionopathy is not fully understood. An autoimmune component is presumed, as the body's own immune system damages a receptor in the autonomic ganglia (part of the peripheral autonomic nerve fiber). In one to two-thirds of affected ind...
Experts recommend that people eat a balanced diet to obtain most nutrients. More information about diet and nutrition is provided by the National Agricultural Library at www.nutrition.gov. Dietary Supplements Iodine is an essential mineral for the thyroid. However, people with autoimmu...
The medications used for the treatment of pinworm are mebendazole, pyrantel pamoate, and albendazole. All three of these drugs are to be given in 1 dose at first and then another single dose 2 weeks later. Pyrantel pamoate is available without prescription. The medication does not reliably kill pinworm eggs. Therefore,...
Desmoplastic small round cell tumors (DSRCT), a rare malignant cancer, is a soft tissue sarcoma that usually affects young boys and men and is found most often in the abdomen. Its name means that it is formed by small, round cancer cells surrounded by scarlike tissue. The most common symptoms include abdominal pain, ab...
Roughly 200,000 people each year visit a doctor for a chemosensory problem such as a taste disorder. Many more taste disorders go unreported.
Certain factors affect prognosis (chance of recovery) and treatment options. The prognosis (chance of recovery) and treatment options depend on the following: - Whether or not the tumor can be removed by surgery. - The stage of the cancer (the size of the tumor and whether the cancer has spread outside the p...
Fibrolamellar carcinoma (FLC) is a rare form of liver cancer which is generally diagnosed in adolescents and young adults (before age 40). Many people with early FLC have no signs or symptoms of the condition. When present, symptoms are often nonspecific (i.e. abdominal pain, weight loss, malaise) and blamed on other, ...
Mutations in at least five genes cause hereditary spherocytosis. These genes provide instructions for producing proteins that are found on the membranes of red blood cells. These proteins transport molecules into and out of cells, attach to other proteins, and maintain cell structure. Some of these proteins allow for c...
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 are studying the underlying causes of the epilepsies in children, adults, and the elderly, as well as seizures that occur following brain trauma, stroke, and brain tumors. Ongoing research is focused on developing new model systems that can be used to more quickly screen potential new treatments for the epil...
Lujan syndrome is a condition characterized by intellectual disability, behavioral problems, and poor muscle tone (hypotonia). Affected people also tend to have characteristic physical features such as a tall and thin body; a large head (macrocephaly); and a thin face with distinctive facial features (prominent top of ...
Most cases of trisomy 18 result from having three copies of chromosome 18 in each cell in the body instead of the usual two copies. The extra genetic material disrupts the normal course of development, causing the characteristic features of trisomy 18. Approximately 5 percent of people with trisomy 18 have an extra co...
The prevalence of piebaldism is unknown.
Anyone can get hepatitis B, but those more likely to are people who - were born to a mother with hepatitis B - are in contact with blood, needles, or body fluids at work - live with someone who currently has an active hepatitis B infection - have had more than one sex partner in the last 6 months or...
These resources address the diagnosis or management of desmosterolosis: - Genetic Testing Registry: Desmosterolosis These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and Rehabilitation - Genetic Counseli...
What are the signs and symptoms of Cornea guttata with anterior polar cataract? The Human Phenotype Ontology provides the following list of signs and symptoms for Cornea guttata with anterior polar cataract. If the information is available, the table below includes how often the symptom is seen in people with this cond...
Syndactyly type 3 (SD3) is a limb abnormality present at birth that is characterized by complete fusion of the 4th and 5th fingers on both hands. In most cases only the soft tissue is fused, but in some cases the bones of the fingers (distal phalanges) are fused. There is evidence that SD3 is caused by mutations in the...
The prevalence of SLC4A1-associated distal renal tubular acidosis is unknown. The condition is most common in Southeast Asia, especially Thailand.
These resources address the diagnosis or management of Proteus syndrome: - Gene Review: Gene Review: Proteus Syndrome - Genetic Testing Registry: Proteus syndrome - Proteus Syndrome Foundation: Diagnostic Criteria and FAQs These resources from MedlinePlus offer information about the diagnosis and management of var...
Signs of childhood Hodgkin lymphoma include swollen lymph nodes, fever, night sweats, and weight loss. These and other signs and symptoms may be caused by childhood Hodgkin lymphoma or by other conditions. Check with your child's doctor if your child has any of the following: - Painless, swollen lymph nodes nea...
These resources address the diagnosis or management of primary spontaneous pneumothorax: - Genetic Testing Registry: Pneumothorax, primary spontaneous - MedlinePlus Encyclopedia: Chest Tube Insertion - MedlinePlus Encyclopedia: Collapsed Lung - Merck Manual for Patients and Caregivers These resources from Medline...
Actin-accumulation myopathy is a rare disorder that has been identified in only a small number of individuals. Its exact prevalence is unknown.
Erythromelalgia (EM) is a rare condition characterized by episodes of burning pain, warmth, swelling and redness in parts of the body, particularly the hands and feet. This condition may occur spontaneously (primary EM) or secondary to neurological diseases, autoimmune diseases, or myeloproliferative disorders (seconda...
The National Institute of Neurological Disorders and Stroke (NINDS) and other institutes of the National Institutes of Health (NIH) conduct research in laboratories at the NIH and also support additional research through grants to major medical institutions across the country. Scientists continue their extensive effort...
This condition is inherited in an X-linked dominant pattern. The gene associated with this condition is located on the X chromosome, which is one of the two sex chromosomes. In females (who have two X chromosomes), a mutation in one of the two copies of the gene in each cell is sufficient to cause the disorder. Some ce...
Almost everyone has had a headache. Headache is the most common form of pain. It's a major reason people miss days at work or school or visit the doctor. The most common type of headache is a tension headache. Tension headaches are due to tight muscles in your shoulders, neck, scalp and jaw. They are often related t...
Children with a UTI should drink as much as they wish and not be forced to drink large amounts of fluid. The health care provider needs to know if a child is not interested in drinking or is unable to drink.
What are the signs and symptoms of Cardioauditory syndrome of Sanchez Cascos? The Human Phenotype Ontology provides the following list of signs and symptoms for Cardioauditory syndrome of Sanchez Cascos. If the information is available, the table below includes how often the symptom is seen in people with this conditio...
Up to half of all cases of ARVC appear to run in families. Most familial cases of the disease have an autosomal dominant pattern of inheritance, which means one copy of an altered gene in each cell is sufficient to cause the disorder. Rarely, ARVC has an autosomal recessive pattern of inheritance, which means both cop...
Spondylocostal dysostosis is a group of conditions characterized by abnormal development of the bones in the spine and ribs. In the spine, the vertebrae are misshapen and fused. Many people with this condition have an abnormal side-to-side curvature of the spine (scoliosis). The ribs may be fused together or missing. T...
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 antiphospholipi...
Renal artery stenosis is the narrowing of one or both renal arteries. Renal means kidney and stenosis means narrowing. The renal arteries are blood vessels that carry blood to the kidneys from the aortathe main blood vessel that carries blood from the heart to arteries throughout the body. RVH is high ...
- An inguinal hernia happens when contents of the abdomenusually fat or part of the small intestinebulge through a weak area in the lower abdominal wall. - A defect in the abdominal wall that is present at birth causes an indirect inguinal hernia. - Direct inguinal hernias usually occur only in male adults as aging a...
Cognitive behavioral therapy (CBT) is a type of psychotherapy that is very useful in treating anxiety disorders. It can help people change the thinking patterns that support their fears and change the way they react to anxiety-provoking situations. For example, cognitive behavioral therapy can help people with panic di...
Common health problems that can run in a family include - Alzheimer's disease/dementia - arthritis - asthma - blood clots - cancer - depression - diabetes - heart disease - high cholesterol - high blood pressure - pregnancy losses and birth defects - stroke. Alzheimer's disease/dementia arthritis a...
How is fibrodysplasia ossificans progressiva inherited? Fibrodysplasia ossificans progressiva is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. Most cases of fibrodysplasia ossificans progressiva result from new mutations in the gen...
Flu is a respiratory infection caused by a number of viruses. The viruses pass through the air and enter your body through your nose or mouth. Between 5% and 20% of people in the U.S. get the flu each year. The flu can be serious or even deadly for elderly people, newborn babies, and people with certain chronic illness...
WAGR syndrome is a genetic syndrome in which there is a predisposition to several conditions, including certain malignancies, distinctive eye abnormalities, and/or mental retardation. WAGR is an acronym for Wilms tumor, Aniridia, Genitourinary anomalies (such as undescended testicles or hypospadias in males, or interna...
Summary : Heroin is a white or brown powder or a black, sticky goo. It's made from morphine, a natural substance in the seedpod of the Asian poppy plant. It can be mixed with water and injected with a needle. Heroin can also be smoked or snorted up the nose. All of these ways of taking heroin send it to the brain very ...
Familial adenomatous polyposis can have different inheritance patterns. When familial adenomatous polyposis results from mutations in the APC gene, it 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 per...
What causes Hashimoto's encephalitis? The exact cause of Hashimoto's encephalitis (HE) is unknown, but is thought to relate to autoimmune or other autoinflammatory processes. While it is associated with Hashimoto's thyroiditis, the exact nature of the relationship between the two conditions is unclear. It does not appe...
Skin cancer occurs when cancer cells form in the tissues of the skin. The skin is mainly made up of two layers: the inner layer, called the dermis, and the outer layer, called the epidermis. Within the epidermis, there are three types of cells; squamous cells, basal cells, and melanocytes. There are three types of skin...
KID syndrome is a rare disorder. Its prevalence is unknown. Approximately 100 cases have been reported.
Glycogen storage disease type 13 (GSD13), also known as -enolase deficiency, is an inherited disease of the muscles. The muscles of an affected individual are not able to produce enough energy to function properly, causing muscle weakness and pain. GSD13 is caused by changes (mutations) in the ENO3 gene and is inheri...
Dihydropyrimidinase deficiency is thought to be a rare disorder. Only a few dozen affected individuals have been described in the medical literature.
These resources address the diagnosis or management of adenine phosphoribosyltransferase deficiency: - Boston Children's Hospital: Pediatric Kidney Stones in Children - Gene Review: Gene Review: Adenine Phosphoribosyltransferase Deficiency - Genetic Testing Registry: Adenine phosphoribosyltransferase deficiency Th...
Have you ever had the "stomach flu?" What you probably had was gastroenteritis - not a type of flu at all. Gastroenteritis is an inflammation of the lining of the intestines caused by a virus, bacteria or parasites. Viral gastroenteritis is the second most common illness in the U.S. The cause is often a norovirus infec...
Researchers are working hard to understand and identify the genes involved in colorectal cancer. Hereditary nonpolyposis colorectal cancer, or HNPCC, is one condition that causes people to develop colorectal cancer at a young age. The discovery of four genes involved with this disease has provided crucial clues about t...
Guillain-Barr syndrome is a rare disorder in which the body's immune system attacks part of the peripheral nervous system. Symptoms include muscle weakness, numbness, and tingling sensations, which can increase in intensity until the muscles cannot be used at all. Usually Guillain-Barr syndrome occurs a few days or wee...
Summary : Endoscopy is a procedure that lets your doctor look inside your body. It uses an instrument called an endoscope, or scope for short. Scopes have a tiny camera attached to a long, thin tube. The doctor moves it through a body passageway or opening to see inside an organ. Sometimes scopes are used for surgery, ...
Risk Increases With Age Researchers suspect that osteoarthritis is caused by a combination of factors in the body and the environment. The chance of developing osteoarthritis increases with age. It is estimated that 33.6% (12.4 million) of individuals age 65 and older are affected by the disease. Wear and Tear on Joint...
If you have a lot of blood in the center of the eye, or vitreous gel, you may need a vitrectomy to restore your sight. If you need vitrectomies in both eyes, they are usually done several weeks apart. A vitrectomy is performed under either local or general anesthesia. Your doctor makes a tiny incision in your eye. Next...
What causes medullary cystic kidney disease? There are 2 types of MCKD, which are both inherited in an autosomal dominant manner but are caused by mutations in different genes. MCKD 1 is caused by mutations in the MCKD1 gene (which has not yet been identified) and MCKD 2 is caused by mutations in the UMOD gene. Exposur...
Propionic acidemia is an inherited disorder in which the body is unable to process certain parts of proteins and lipids (fats) properly. It is classified as an organic acid disorder, which is a condition that leads to an abnormal buildup of particular acids known as organic acids. Abnormal levels of organic acids in th...
Is rheumatic fever inherited? Rheumatic fever is likely inherited in a multifactorial manner, which means it is caused by multiple genes interacting with each other and with environmental factors. The condition is thought to occur in genetically susceptible children who are infected with group A Streptococcus bacteria ...
For more information on stroke, including research sponsored by the National Institute of Neurological Disorders and Stroke, call 1-800-352-9424 or visit the Web site at www.ninds.nih.gov.
How might succinic semialdehyde dehydrogenase deficiency be treated? Treatment of succinic semialdehyde dehydrogenase deficiency (SSADH) is generally symptomatic and typically focuses on the treatment of seizures and neurobehavioral disturbances. Antiepileptic drugs (AEDs) that have proven to be effective in treating t...
People with diabetes, hypertension, or certain family backgrounds are at risk for proteinuria. In the United States, diabetes is the leading cause of ESRD.1 In both type 1 and type 2 diabetes, albumin in the urine is one of the first signs of deteriorating kidney function. As kidney function declines, the amount of alb...
Summary : Each step you take involves a complex network of bones, muscles, tendons, and ligaments. This, combined with all of the weight they carry, explains why feet can have problems. To keep your feet healthy - Examine your feet regularly - Wear comfortable shoes that fit - Wash your feet daily with s...
Abetalipoproteinemia is a rare disorder with approximately 100 cases described worldwide.
Mutations in the FBN2 gene cause congenital contractural arachnodactyly. The FBN2 gene provides instructions for producing the fibrillin-2 protein. Fibrillin-2 binds to other proteins and molecules to form threadlike filaments called microfibrils. Microfibrils become part of the fibers that provide strength and flexibi...
Each year over a million people in the U.S. have a heart attack. About half of them die. Many people have permanent heart damage or die because they don't get help immediately. It's important to know the symptoms of a heart attack and call 9-1-1 if someone is having them. Those symptoms include - Chest discomfort...
Werner's syndrome is a disease chiefly characterized by premature aging and cancer predisposition. Development is typically normal until the end of the first decade; the first sign is the lack of a growth spurt during puberty. Early signs (usually in the 20s) include loss and graying of hair, hoarseness, and scleroderm...
What causes Tay syndrome? How is it inherited? Although Tay syndrome is known to be genetic, the gene(s) associated with the condition is(are) unknown. Tay syndrome is inherited in an autosomal recessive pattern , which means two copies of the gene in each cell are altered (mutated). If both parents carry the gene for ...
Joubert syndrome is disorder of abnormal brain development that may affect many parts of the body. It is characterized by the absence or underdevelopment of the cerebellar vermis (a part of the brain that controls balance and coordination) and a malformed brain stem (connection between the brain and spinal cord). This ...
Researchers are studying various drugs, immunotherapies, and other types of treatments. Because leukemia is a complicated disease, researchers are also studying the effectiveness of using combinations of treatments. Following are a few examples of some areas of current research. The drug imatinib (Gleevec) is important...
How is Liddle syndrome diagnosed? A diagnosis of Liddle syndrome may first be suspected by the detection of early-onset hypertension (high blood pressure), especially in the presence of family history. The diagnosis may then be confirmed by special blood and urine tests which show hypokalemia (low blood potassium level...
The classic symptoms of botulism include double vision, blurred vision, drooping eyelids, slurred speech, difficulty swallowing, dry mouth, and muscle weakness. Infants with botulism appear lethargic, feed poorly, are constipated, and have a weak cry and poor muscle tone. These are all symptoms of the muscle paralysis ...
The exact prevalence of white sponge nevus is unknown, but it is estimated to affect less than 1 in 200,000 individuals worldwide.
Microcephalic osteodysplastic primordial dwarfism type 1 (MOPD1) is a genetic condition that is mainly characterized by intrauterine and post-natal growth retardation; an abnormally small head size (microcephaly); abnormal bone growth (skeletal dysplasia); distinctive facial features; and brain anomalies. Other signs a...
Prune belly syndrome, also called Eagle-Barrett syndrome, is a condition characterized by three main features: (1) a lack of abdominal muscles, causing the skin on the belly area to wrinkle and appear "prune-like"; (2) undescended testicles in males; and (3) urinary tract problems. The incidence of prune belly syndrom...
How is olivopontocerebellar atrophy diagnosed? A diagnosis of olivopontocerebellar atrophy (OPCA) may be based on a thorough medical exam; the presence of signs and symptoms; imaging studies; various laboratory tests; and an evaluation of the family history. MRI of the brain may show characteristics of OPCA, such as sp...
What causes Hanhart syndrome syndrome? The exact underlying cause of Hanhart syndrome is currently unknown. However, researchers suspect that there may be genetic and/or environmental factors that contribute to the development of the condition. To date, no specific disease-causing genes have been identified. Possible e...
The NINDS conducts and supports a wide range of studies that explore the complex systems of brain development. These studies include the identification of the mechanism of action of the known causes of NMD as well as studies to identify further causes of disease. NIH-funded researchers work closely with parental suppor...
Mutations in the SCN4A gene cause paramyotonia congenita. This gene provides instructions for making a protein that is critical for the normal function of skeletal muscle cells. For the body to move normally, skeletal muscles must tense (contract) and relax in a coordinated way. Muscle contractions are triggered by the...
How might acquired pulmonary alveolar proteinosis be treated? The treatment of PAP varies from case to case depending upon the age of an affected individual and severity of the disease. Approximately one-third of individuals with idiopathic PAP (of unknown cause) will improve without treatment (spontaneous remission). ...
What causes osteochondritis dissecans? In most cases, the exact underlying cause of osteochondritis dissecans is not completely understood. Scientists suspect that it may be due to decreased blood flow to the end of the affected bone, which may occur when repetitive episodes of minor injury and/or stress damage a bone ...
Madelung disease is a rare condition characterized by the symmetric growth of fatty tumors (lipomas) around the neck, shoulders, upper arms and/or upper trunk. It most often affects men of Mediterranean ancestry between the ages of 30 and 70 who have a history of alcohol abuse. Non-alcoholics and women can also be affe...
Alexander disease is one of a group of neurological conditions known as the leukodystrophies, disorders that are the result of abnormalities in myelin, the white matter that protects nerve fibers in the brain. Alexander disease is a progressive and often fatal disease. The destruction of white matter is accompanied by ...