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Feingold syndrome appears to be a rare condition, although its exact prevalence is unknown.
Summary : Electrolytes are minerals in your body that have an electric charge. They are in your blood, urine and body fluids. Maintaining the right balance of electrolytes helps your body's blood chemistry, muscle action and other processes. Sodium, calcium, potassium, chlorine, phosphate and magnesium are all electrol...
Cancer begins in the cells, which are the building blocks of your body. Normally, new cells form as you need them, replacing old cells that die. Sometimes, this process goes wrong. New cells form when you don't need them, and old cells don't die when they should. The extra cells can form a tumor. Benign tumors aren't c...
Mutations in the AIRE gene cause autoimmune polyglandular syndrome, type 1. The AIRE gene provides instructions for making a protein called the autoimmune regulator. As its name suggests, this protein plays a critical role in regulating certain aspects of immune system function. Specifically, it helps the body disting...
The thyroid is a 2-inch-long, butterfly-shaped gland weighing less than 1 ounce. Located in the front of the neck below the larynx, or voice box, it has two lobes, one on each side of the windpipe. The thyroid is one of the glands that make up the endocrine system. The glands of the endocrine system produce and store h...
Laboratory tests that are used to diagnose Hendra virus (HV) and Nipah virus (NV) include detection of antibody by ELISA (IgG and IgM), real time polymerase chain reaction (RT-PCR), and virus isolation attempts. In most countries, handling Hendra virus needs to be done in high containment laboratories. Laboratory diag...
If you have diabetes, your blood glucose, or blood sugar, levels are too high. Over time, this can damage your kidneys. Your kidneys clean your blood. If they are damaged, waste and fluids build up in your blood instead of leaving your body. Kidney damage from diabetes is called diabetic nephropathy. It begins long ...
Megalencephalic leukoencephalopathy with subcortical cysts is a rare condition; its exact prevalence is unknown. More than 150 cases have been reported in the scientific literature.
PHA1 can have different inheritance patterns. When the condition is caused by mutations in the NR3C2 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. When PHA1 is caused by mutations in the SCNN1A, SCNN1B, or SCNN1G genes,...
Mutations in the FAM126A gene cause hypomyelination and congenital cataract. The FAM126A gene provides instructions for making a protein called hyccin, the function of which is not completely understood. Based on the features of hypomyelination and congenital cataract, researchers presume that hyccin is involved in the...
Is leukonychia totalis inherited? Leukonychia totalis can be inherited in either an autosomal dominant or autosomal recessive manner. It may also occur as part of various underlying conditions or abnormalities, some of which have their own specific genetic cause(s) and inheritance patterns. In some cases, the condition...
Spondyloepiphyseal dysplasia (SED) Maroteaux type is a rare skeletal dysplasia that is characterized by short stature beginning in infancy, short, stubby hands and feet, and genu valgum (knock knees). In addition to these physical characteristics, individuals with SED Maroteaux type have some common radiographic findin...
What causes Cushing's syndrome? Cushing's syndrome is caused by long-term exposure of the body's tissues to cortisol, a hormone that is naturally produced by the adrenal gland. Exposure to too much cortisol can result from long-term use of corticosteriod medications used to treat inflammatory illnesses. Pituitary adeno...
How might children with achondroplasia be treated? Recommendations for management of children with achondroplasia were outlined by the American Academy of Pediatrics Committee on Genetics in the article, Health Supervision for Children with Achondroplasia. We recommend that you review this article with your childs heal...
How might hereditary geniospasm be treated? Hereditary geniospasm, which may also be referred to as hereditary essential chin myoclonus, is generally considered a benign disorder although in some cases it can cause anxiety and social embarrassment. Significant improvement with age has been reported. Several drugs are u...
How might lichen sclerosus be treated? Strong topical steroid creams or ointments reportedly are very helpful for lichen sclerosus, especially when it affects the genital areas. However, the response to this treatment varies. While itching may be relieved within days, it can take weeks or months for the skin's appearan...
How is Duchenne muscular dystrophy (DMD) diagnosed? Duchenne muscular dystrophy (DMD) is suspected and diagnosed when the following clinical findings are found: a positive family history of DMD, more men affected that women in a family, progressive muscle weakness which is usually greater in the proximal muscles (close...
Familial periodic paralyses are a group of inherited neurological disorders caused by mutations in genes that regulate sodium and calcium channels in nerve cells. They are characterized by episodes in which the affected muscles become slack, weak, and unable to contract. Between attacks, the affected muscles usually wo...
How might aniridia be treated? In childhood, treatment for aniridia focuses on regular eye examinations including necessary corrective lenses, tinted lenses to reduce light sensitivity, and occlusion therapy to address vision abnormalities. Children with Wilms tumor-aniridia-genital anomalies-retardation (WAGR) syndrom...
These resources address the diagnosis or management of pyruvate kinase deficiency: - Cincinnati Children's Hospital Medical Center: Hemolytic Anemia - Genetic Testing Registry: Pyruvate kinase deficiency of red cells - Johns Hopkins Medicine: Hemolytic Anemia These resources from MedlinePlus offer information abou...
Mutations in the HOXA13 gene cause hand-foot-genital syndrome. The HOXA13 gene provides instructions for producing a protein that plays an important role in development before birth. Specifically, this protein appears to be critical for the formation and development of the limbs (particularly the hands and feet), urina...
These resources address the diagnosis or management of congenital bilateral absence of the vas deferens: - Gene Review: Gene Review: CFTR-Related Disorders - Genetic Testing Registry: Congenital bilateral absence of the vas deferens - MedlinePlus Encyclopedia: Infertility - MedlinePlus Encyclopedia: Pathway of sper...
Scientists are concentrating on finding new treatments and refining existing ones. Scientists are also looking at the workings of the immune system to find which cells are responsible for beginning and carrying out the attack on the nervous system. The fact that so many cases of Guillain-Barr begin after a viral or bac...
Mutations in the AGPAT2, BSCL2, CAV1, and PTRF genes cause congenital generalized lipodystrophy types 1 through 4, respectively. The proteins produced from these genes play important roles in the development and function of adipocytes, which are the fat-storing cells in adipose tissue. Mutations in any of these genes r...
CACT deficiency is very rare; at least 30 cases have been reported.
What causes Mowat-Wilson syndrome? Mowat-Wilson syndrome is caused by mutations in the ZEB2 (also known as ZFHX1B or SIP-1) gene. This gene provides instructions for making a protein that plays a critical role in the formation of many organs and tissues before birth. It is a transcription factor, which means that it at...
The Creutzfeldt-Jakob Disease Foundation, Inc. (www.cjdfoundation.org) was created in 1993 by two families who lost relatives to CJD and the neurologist who treated their family members. This nonprofit corporation seeks to promote awareness of CJD through research and education and to reach out to people who have lost ...
The prevalence of HFTC is unknown, but it is thought to be a rare condition. It occurs most often in Middle Eastern and African populations.
Krabbe disease in infants is generally fatal before age 2. Individuals with a later onset form of the disease generally have a milder course of the disease and live significantly longer.
These resources address the diagnosis or management of maple syrup urine disease: - Baby's First Test - Gene Review: Gene Review: Maple Syrup Urine Disease - Genetic Testing Registry: Maple syrup urine disease - MedlinePlus Encyclopedia: Maple Syrup Urine Disease These resources from MedlinePlus offer information...
Iron is an essential nutrient found in many foods. Healthy people usually absorb less than 10 percent of iron in the food they eat.6 People with hemochromatosis absorb up to 30 percent of that iron.6 People with hemochromatosis can help prevent iron overload by - eating only moderate amounts of iron-ri...
Donnai Barrow syndrome is an inherited disorder that affects many parts of the body. People with this condition generally have characteristic facial features, severe sensorineural hearing loss, vision problems and an absent or underdeveloped corpus callosum (the tissue connecting the left and right halves of the brain)...
These resources address the diagnosis or management of androgen insensitivity syndrome: - Gene Review: Gene Review: Androgen Insensitivity Syndrome - Genetic Testing Registry: Androgen resistance syndrome - MedlinePlus Encyclopedia: Androgen Insensitivity Syndrome - MedlinePlus Encyclopedia: Intersex - MedlinePlus...
These resources address the diagnosis or management of Bowen-Conradi syndrome: - Genetic Testing Registry: Bowen-Conradi syndrome - MedlinePlus Encyclopedia: Feeding Tube--Infants These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests ...
1q21.1 microdeletion is a rare chromosomal change; only a few dozen individuals with this deletion have been reported in the medical literature.
Most people first notice symptoms, such as tingling or numbness, in their hands or feet. Other common symptoms include sudden or sharp pain sensations, loss of sensation of touch, loss of balance or difficulty walking, trouble picking up objects or buttoning clothes, and being more -- or less -- sensitive to heat and c...
If you have been taking analgesics regularly to control chronic pain, you may be advised to find new ways to treat your pain, such as behavior modification or relaxation techniques. Depending on how much your kidney function has declined, you may be advised to change your diet, limit the fluids you drink, or take medic...
Gay, lesbian, bisexual and transgender individuals have special health concerns besides the usual ones that affect most men and women. On this page you'll find information about these specific health issues.
For surgery, the main side effects are short-term pain and tenderness around the area of the operation. For chemotherapy, the side effects depend on which drugs you take and what the dosages are. Most often the side effects include nausea, vomiting, and hair loss. For radiation therapy, fatigue, loss of appetite, nause...
Stormorken syndrome is a rare condition that affects many body systems. Affected individuals usually have thrombocytopenia, in which there are abnormally low numbers of blood cells called platelets. Platelets are involved in normal blood clotting; a shortage of platelets typically results in easy bruising and abnormal ...
The National Institute of Neurological Disorders and Stroke (NINDS) and other institutes of the National Institutes of Health (NIH) conduct research related to megalencephaly in laboratories at the NIH and also support additional research through grants to major medical institutions across the country. Much of this res...
If left untreated, gum disease can lead to tooth loss. Gum disease is the leading cause of tooth loss in older adults.
The term cerebral palsy refers to a group of neurological disorders that appear in infancy or early childhood and permanently affect body movement, muscle coordination, and balance.CP affects the part of the brain that controls muscle movements. The majority of children with cerebral palsy are born with it, although it...
Mutations in the REN gene cause REN-related kidney disease. This gene provides instructions for making a protein called renin that is produced in the kidneys. Renin plays an important role in regulating blood pressure and water levels in the body. Mutations in the REN gene that cause REN-related kidney disease result ...
Charcot-Marie-Tooth disease type 2B (CMT2B) affects the peripheral nerves, the nerves running from outside the brain and spine. Common signs and symptoms include slowly progressive weakness and numbness in the feet, lower leg muscles, hands, and forearms. This type of CMT is also associated with the formation of ulcers...
How is Best vitelliform macular dystrophy inherited? Best vitelliform macular dystrophy (BVMD) is most commonly inherited in an autosomal dominant manner, although a few cases with autosomal recessive inheritance have been reported. In autosomal dominant inheritance, having one changed (mutated) copy of the responsible...
What causes adolescent idiopathic scoliosis? The term "idiopathic" means that the cause of this condition is unknown. Adolescent idiopathic scoliosis probably results from a combination of genetic and environmental factors. Studies suggest that the abnormal spinal curvature may be related to hormonal problems, abnormal...
Pitt-Hopkins syndrome is thought to be a very rare condition. Approximately 500 affected individuals have been reported worldwide.
This condition is most commonly 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. R...
Axenfeld-Rieger syndrome is a group of eye disorders that affects the development of the eye. Common eye symptoms include cornea defects, which is the clear covering on the front of the eye, and iris defects, which is the colored part of the eye. People with this syndrome may have an off-center pupil (corectopia) or ex...
What are the signs and symptoms of Cone dystrophy? The Human Phenotype Ontology provides the following list of signs and symptoms for Cone 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 l...
A kidney stone is a solid piece of material that forms in the kidney from substances in the urine. It may be as small as a grain of sand or as large as a pearl. Most kidney stones pass out of the body without help from a doctor. But sometimes a stone will not go away. It may get stuck in the urinary tract, block the fl...
Some studies show that normal variations in certain genes may be associated with an increased risk of developing Guillain-Barr syndrome; however, more research is necessary to identify and confirm associated genes. Many of the genes that may increase the risk of Guillain-Barr syndrome are involved in the immune system,...
These and other signs and symptoms may be caused by retinoblastoma or by other conditions. Check with a doctor if your child has any of the following: - Pupil of the eye appears white instead of red when light shines into it. This may be seen in flash photographs of the child. - Eyes appear to be looking in...
Within the NINDS research programs, meralgia paresthetica is addressed primarily through studies associated with pain research. NINDS vigorously pursues a research program seeking new treatments for pain and nerve damage with the ultimate goal of reversing these debilitating conditions.
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 some 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 histor...
Myofibrillar myopathy is part of a group of disorders called muscular dystrophies that affect muscle function and cause weakness. Myofibrillar myopathy primarily affects skeletal muscles, which are muscles that the body uses for movement. In some cases, the heart (cardiac) muscle is also affected. The signs and sympto...
These resources address the diagnosis or management of Alpers-Huttenlocher syndrome: - Gene Review: Gene Review: POLG-Related Disorders - Genetic Testing Registry: Progressive sclerosing poliodystrophy - United Mitochondrial Disease Foundation: Diagnosis of Mitochondrial Disease These resources from MedlinePlus of...
Viral hemorrhagic fevers (VHFs) are a group of illnesses caused by four families of viruses. These include the Ebola and Marburg, Lassa fever, and yellow fever viruses. VHFs have common features: they affect many organs, they damage the blood vessels, and they affect the body's ability to regulate itself. Some VHFs cau...
These resources address the diagnosis or management of 8p11 myeloproliferative syndrome: - Cancer.Net from the American Society of Clinical Oncology: Acute Myeloid Leukemia Diagnosis - Cancer.Net from the American Society of Clinical Oncology: Acute Myeloid Leukemia Treatment Options - Cancer.Net from the American S...
These resources address the diagnosis or management of retinitis pigmentosa: - American Foundation for the Blind: Living with Vision Loss - Foundation Fighting Blindness: Treatment of Retinitis Pigmentosa - Gene Review: Gene Review: Retinitis Pigmentosa Overview - Genetic Testing Registry: Retinitis pigmentosa - R...
Some people think that Medicare and Medicaid are the same. Actually, they are two different programs. Medicaid is a state-run program that provides hospital and medical coverage for people with low income and little or no resources. Each state has its own rules about who is eligible and what is covered under Medicaid. ...
Hemifacial myohyperplasia (HMH) is a developmental disorder that frequently affects the right side of the face and is commonly seen in males. On the affected side of the face, there are usually enlarged tissues that lead to an abnormal jaw shape. Other features associated with HMH include enlargement of the brain, epi...
These resources address the diagnosis or management of Gillespie syndrome: - Eunice Kennedy Shriver National Institute of Child Health and Human Development: How Do Health Care Providers Diagnose Intellectual and Developmental Disabilities? - Eunice Kennedy Shriver National Institute of Child Health and Human Develop...
These resources address the diagnosis or management of pontocerebellar hypoplasia: - Gene Review: Gene Review: EXOSC3-Related Pontocerebellar Hypoplasia - Gene Review: Gene Review: TSEN54-Related Pontocerebellar Hypoplasia - Genetic Testing Registry: Pontoneocerebellar hypoplasia - MedlinePlus Encyclopedia: Microce...
How is anophthalmia plus syndrome diagnosed? A review of the available medical literature does not currently yield information about specific diagnostic criteria for anophthalmia plus syndrome (APS). Because APS is so rarely reported, specific diagnostic criteria may not exist. Anophthalmia and/or microphthalmia with o...
How is celiac artery compression syndrome diagnosed? A diagnosis of celiac artery compression syndrome might be suspected in middle aged (40-60) female patients with a triad of symptoms including abdominal pain after eating, weight loss, and abdominal bruit (abnormal sound of a blood vessel when blocked or narrowed). A...
Infectious diseases kill more people worldwide than any other single cause. Infectious diseases are caused by germs. Germs are tiny living things that are found everywhere - in air, soil and water. You can get infected by touching, eating, drinking or breathing something that contains a germ. Germs can also spread thro...
How might livedoid vasculopathy be treated? Treatment of livedoid vasculopathy aims to reduce pain, ulceration and scarring. General treatment measures may involve protecting the skin from injury and irritants, removing dead tissue from the ulcers, treating infection with antibiotics, elevating legs, compression therap...
In most cases of cyclic vomiting syndrome, affected people have no known history of the disorder in their family. However, many affected individuals have a family history of related conditions, such as migraines, irritable bowel syndrome, or depression, in their mothers and other maternal relatives. This family history...
Having certain diseases and inherited disorders can increase the risk of childhood soft tissue sarcoma. Anything that increases your 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...
How is medium-chain acyl-coenzyme A dehydrogenase (MCAD) deficiency inherited? Medium-chain acyl-coenzyme A dehydrogenase deficiency (MCADD) is inherited in an autosomal recessive manner. This means that both copies of the responsible gene in each cell must have mutations for a person to be affected. Usually, the paren...
Some people with Addisons disease who are aldosterone deficient can benefit from following a diet rich in sodium. A health care provider or a dietitian can give specific recommendations on appropriate sodium sources and daily sodium guidelines if necessary. Corticosteroid treatment is linked to an incr...
How might arginase deficiency be treated? The treatment and management of arginase deficiency is generally focused on lowering arginine levels and preventing hyperammonemia (an accumulation of ammonia in the blood). This may be accomplished through dietary modifications and the use of certain medications (called nitrog...
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.
Osteoglophonic dysplasia is a rare disorder; its prevalence is unknown. Only about 15 cases have been reported in the medical literature.
How might Jones syndrome be treated? Due to the rarity of Jones syndrome, there are no treatment guidelines available in the medical literature. However, there is information about how the features associated with Jones syndrome might be treated. Treatment for gingival fibromatosis varies depending on the severity. Mai...
What are the signs and symptoms of Usher syndrome, type 1C? The Human Phenotype Ontology provides the following list of signs and symptoms for Usher syndrome, type 1C. 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 Medic...
The NINDS supports and conducts research on sleep disorders such as hypersomnia. The goal of this research is to increase scientific understanding of the condition, find improved methods of diagnosing and treating it, and discover ways to prevent it.
What are the signs and symptoms of Congenital anosmia? The Human Phenotype Ontology provides the following list of signs and symptoms for Congenital anosmia. 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 Diction...
These resources address the diagnosis or management of progressive osseous heteroplasia: - Genetic Testing Registry: Progressive osseous heteroplasia These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and ...
Dopa-responsive dystonia (DRD) is an inherited type of dystonia that typically begins during childhood but may begin in adolescence or adulthood. Depending on the specific type of DRD, specific symptoms can vary. Features can range from mild to severe. In most cases, dystonia begins in the lower limbs and spreads to th...
Is there treatment for prurigo nodularis? Prurigo nodularis can be challenging to treat. Due to the intensity of the itch patients may go from doctor to doctor without receiving much relief. Treatment may vary from person to person, as no one treatment is always effective at alleviating symptoms. Several treatments ma...
Your gallbladder is a pear-shaped organ under your liver. It stores bile, a fluid made by your liver to digest fat. As your stomach and intestines digest food, your gallbladder releases bile through a tube called the common bile duct. The duct connects your gallbladder and liver to your small intestine. Your gallbla...
How might Poland syndrome be treated? Management of Poland syndrome may include surgical correction of the chest wall deformities. Surgical options are available to improve appearance in both males and females. In females, breast reconstruction is typically performed at the time of normal full breast development and ca...
Fragile X syndrome is a genetic condition that causes a range of developmental problems including learning disabilities and cognitive impairment. Usually, males are more severely affected by this disorder than females. Affected individuals usually have delayed development of speech and language by age 2. Most males wi...
Vitiligo is a common disorder, affecting between 0.5 percent and 1 percent of the population worldwide. While the condition may be more noticeable in dark-skinned people, it occurs with similar frequency in all ethnic groups.
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 ...
Cushing disease is caused by elevated levels of a hormone called cortisol, which leads to a wide variety of signs and symptoms. This condition usually occurs in adults between the ages of 20 and 50; however, children may also be affected. The first sign of this condition is usually weight gain around the trunk and in t...
Dyssynergia Cerebellaris Myoclonica refers to a collection of rare, degenerative, neurological disorders characterized by epilepsy, cognitive impairment, myoclonus, and progressive ataxia. Symptoms include seizures, tremor, and reduced muscle coordination. Onset of the disorder generally occurs in early adulthood. Trem...
Heart disease is the leading cause of death in the U.S. It is also a major cause of disability. The risk of heart disease increases as you age. You have a greater risk of heart disease if you are a man over age 45 or a woman over age 55. You also are at greater risk if you have a close family member who had heart disea...
An estimated 1.1 to 2.5 million people worldwide have multiple sclerosis. Although the reason is unclear, this condition is more common in regions that are farther away from the equator. In Canada, parts of the northern United States, western and northern Europe, Russia, and southeastern Australia, the condition affect...
Glanzmann thrombasthenia is a bleeding disorder that is characterized by prolonged or spontaneous bleeding starting from birth. People with Glanzmann thrombasthenia tend to bruise easily, have frequent nosebleeds (epistaxis), and may bleed from the gums. They may also develop red or purple spots on the skin caused by b...
How might gamma heavy chain disease be treated? People with symptoms may respond to chemotherapy drugs, corticosteroids, and radiation therapy. Commonly used chemotherapeutic agents include cyclophosphamide, prednisone, vincristine, chlorambucil and doxorubicin. Patients are most commonly treated and followed by oncolo...
The prevalence of aromatase deficiency is unknown; approximately 20 cases have been described in the medical literature.
Isolated polymicrogyria can have different inheritance patterns. Several forms of the condition, including bilateral frontoparietal polymicrogyria (which is associated with mutations in the ADGRG1 gene), have an autosomal recessive pattern of inheritance. In autosomal recessive inheritance, both copies of the gene in e...
Breast cancer is the second most commonly diagnosed cancer in women. (Only skin cancer is more common.) About one in eight women in the United States will develop invasive breast cancer in her lifetime. Researchers estimate that more than 230,000 new cases of invasive breast cancer will be diagnosed in U.S. women in 20...
There is no cure for A-T and, currently, no way to slow the progression of the disease. Treatment is symptomatic and supportive. Physical and occupational therapy help to maintain flexibility. Speech therapy is important, teaching children to control air flow to the vocal cords. Gamma-globulin injections may be useful ...
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...
How might periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis be treated? Treatment options that have been successful in improving symptoms of this condition include: oral steroids (prednisone or prednisolone), tonsillectomy with adenoidectomy and cimetidine.