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Bjrnstad syndrome is a rare condition, although its prevalence is unknown. It has been found in populations worldwide.
Most cases of Down syndrome result from trisomy 21, which means each cell in the body has three copies of chromosome 21 instead of the usual two copies. Less commonly, Down syndrome occurs when part of chromosome 21 becomes attached (translocated) to another chromosome during the formation of reproductive cells (eggs ...
- Intestinal pseudo-obstruction is a rare condition with symptoms that resemble those caused by a blockage, or obstruction, of the intestines, also called the bowel. However, when a health care provider examines the intestines, no blockage exists. Instead, the symptoms are due to nerve or muscle problems that affect th...
Klumpke paralysis is a type of brachial palsy in newborns. Signs and symptoms include weakness and loss of movement of the arm and hand. Some babies experience drooping of the eyelid on the opposite side of the face as well. This symptom may also be referred to as Horner syndrome. Klumpke paralysis is caused by an inj...
What causes tracheobronchopathia osteoplastica? The underlying cause of tracheobronchopathia osteoplastica (TO) remains unknown. Several theories have been proposed, including chronic airway inflammation, exostosis (formation of new bone), and metaplasia (abnormal cell changes) in the affected tissue. Numerous cases ha...
Is genetic testing available for anaplastic astrocytomas? When anaplastic astrocytomas are not associated with an inherited condition, the cause typically remains unknown. In these cases, genetic testing is not available. However, genetic testing is available for the few genetic disorders that are associated with an in...
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.
Although it is difficult to estimate the overall frequency of Ehlers-Danlos syndrome, the combined prevalence of all types of this condition may be about 1 in 5,000 individuals worldwide. The hypermobility and classical forms are most common; the hypermobility type may affect as many as 1 in 10,000 to 15,000 people, wh...
Adhesions are bands of scar-like tissue. Normally, internal tissues and organs have slippery surfaces so they can shift easily as the body moves. Adhesions cause tissues and organs to stick together. They might connect the loops of the intestines to each other, to nearby organs, or to the wall of the abdomen. They can ...
How might Pelizaeus-Merzbacher disease be treated?
How might pyridoxine-dependent epilepsy be treated? Anticonvulsant drugs, which are usually given to control seizures, are ineffective in people with pyridoxine-dependent epilepsy. Instead, people with this type of seizure are medically treated with large daily doses of pyridoxine (a type of vitamin B6 found in food). ...
Distal hereditary motor neuropathy, type V is a progressive disorder that affects nerve cells in the spinal cord. It results in muscle weakness and affects movement of the hands and feet. Symptoms of distal hereditary motor neuropathy, type V usually begin during adolescence, but onset varies from infancy to the mid-t...
These resources address the diagnosis or management of ataxia-telangiectasia: - Gene Review: Gene Review: Ataxia-Telangiectasia - Genetic Testing Registry: Ataxia-telangiectasia syndrome - MedlinePlus Encyclopedia: Ataxia-Telangiectasia These resources from MedlinePlus offer information about the diagnosis and man...
How is human T-cell leukemia virus, type 1 diagnosed? Human T-cell leukemia virus, type 1 (HTLV-1) is usually diagnosed based on blood tests that detect antibodies to the virus. However, HTLV-1 is often never suspected or diagnosed since most people (95%) never develop any signs or symptoms of the infection. Diagnosis ...
The urinary tract is the bodys drainage system for removing wastes and extra water. The urinary tract includes two kidneys, two ureters, a bladder, and a urethra. The kidneys are a pair of bean-shaped organs, each about the size of a fist and located below the ribs, one on each side of the spine, toward the middle of t...
Mutations in the TRAPPC2 gene (often called the SEDL gene) cause X-linked spondyloepiphyseal dysplasia tarda. The TRAPPC2 gene provides instructions for producing the protein sedlin. The function of sedlin is unclear. Researchers believe that sedlin is part of a large molecule called the trafficking protein particle (T...
Treatment is symptomatic, and may include anti-seizure medication and special or supplemental education consisting of physical, occupational, and speech therapies.
Hydrops fetalis is a serious condition in which abnormal amounts of fluid build up in two or more body areas of a fetus or newborn. There are two types of hydrops fetalis: immune and nonimmune. Immune hydrops fetalis is a complication of a severe form of Rh incompatibility. Rh compatibility causes massive red blood cel...
D-2-HGA type I, L-2-HGA, and combined D,L-2-HGA all have an autosomal recessive pattern of inheritance, 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 sy...
Barrett esophagus is a condition in which the lining of the esophagus (the tube that carries food from the throat to the stomach) is replaced by tissue that is similar to the lining of the intestines. Although this change does not cause any specific signs or symptoms, it is typically diagnosed in people who have long-t...
How might platelet storage pool deficiency be treated? Treatment for platelet storage pool deficiency is symptomatic. For example, people who have severe episodes of bleeding may require platelet transfusions or antifibrinolytic medications, particularly during periods of high risk such as during surgical procedures or...
Linear porokeratosis is a skin condition that most often begins in infancy or early childhood, but it can occur at any age. The main feature of this condition is the development of reddish brown, slightly raised markings on the skin arranged in lines or streaks on one side of the body. These markings are not usually ...
What causes primary carnitine deficiency? Mutations in the SLC22A5 gene cause primary carnitine deficiency. This gene provides instructions for making a protein called OCTN2 that transports carnitine into cells. Cells need carnitine to bring certain types of fats (fatty acids) into mitochondria, which are the energy-pr...
Brittle cornea syndrome (BCS) is a type of connective tissue disorder that mainly affects the eyes, joints and skin. Signs and symptoms may include rupture of the cornea after only minor trauma; degeneration of the cornea (keratoconus) or thinning and protrusion of the cornea (keratoglobus); bluish tint in the white pa...
These resources address the diagnosis or management of HSAN2: - Gene Review: Gene Review: Hereditary Sensory and Autonomic Neuropathy Type II - Genetic Testing Registry: Hereditary sensory and autonomic neuropathy type IIA - Genetic Testing Registry: Hereditary sensory and autonomic neuropathy type IIB These resou...
Summary : When you cough or sneeze, you send tiny germ-filled droplets into the air. Colds and flu usually spread that way. You can help stop the spread of germs by - Covering your mouth and nose when you sneeze or cough. Sneeze or cough into your elbow, not your hands. - Cleaning your hands often - always bef...
Certain factors affect treatment options and prognosis (chance of recovery). The treatment options and prognosis (chance of recovery) depend on the following: - The type of soft tissue sarcoma. - The size, grade, and stage of the tumor. - How fast the cancer cells are growing and dividing. - Where the...
IRD is a fatal disease, but some children will survive into their teens and twenties, and possibly even beyond.
Bilateral generalized polymicrogyria is a rare neurological disorder that affects the cerebral cortex (the outer surface of the brain). This is the most widespread form of polymicrogyria and typically affects the entire surface of the brain. Signs and symptoms include severe intellectual disability, problems with movem...
Constipation means that a person has three or fewer bowel movements in a week. The stool can be hard and dry. Sometimes it is painful to pass. At one time or another, almost everyone gets constipated. In most cases, it lasts a short time and is not serious. There are many things you can do to prevent constipation. ...
The mission of the National Institute of Neurological Disorders and Stroke (NINDS) is to seek fundamental knowledge about the brain and nervous system, and to use that knowledge to reduce the burden of neurological disease. The NINDS conducts and supports a wide range of studies that explore the complex mechanisms of n...
Hereditary diffuse leukoencephalopathy with spheroids (HDLS) is a neurological condition characterized by changes to certain areas of the brain. A hallmark of HDLS is leukoencephalopathy, which is damage to a type of brain tissue called white matter. Another common finding is axon damage due to swellings called spheroi...
These resources address the diagnosis or management of hypomyelination and congenital cataract: - Gene Review: Gene Review: Hypomyelination and Congenital Cataract - Genetic Testing Registry: Hypomyelination and Congenital Cataract - MedlinePlus Encyclopedia: Congenital Cataract - MedlinePlus Encyclopedia: Muscle A...
Inherited thyroxine-binding globulin deficiency is a genetic condition that typically does not cause any health problems. Thyroxine-binding globulin is a protein that carries hormones made or used by the thyroid gland, which is a butterfly-shaped tissue in the lower neck. Thyroid hormones play an important role in reg...
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.
The NINDS supports a broad range of research on neurodegenerative disorders such as Dyssynergia Cerebellaris Myoclonica. The goals of this research are to find ways to prevent, treat, and cure these kinds of disorders.
Most people who have a problem with smell have recently had an illness or injury. The most common causes are upper respiratory infections, such as the common cold, and chronic sinus or nasal disease. Other common causes are - aging - smoking - nasal polyps - head injury - allergens such as ragweed, grasses, and...
Most cases of oculopharyngeal muscular dystrophy are inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. People with autosomal dominant oculopharyngeal muscular dystrophy have a mutation resulting in a PABPN1 protein with an expanded pol...
How is cone dystrophy diagnosed? The diagnosis of cone dystrophy is made based upon the presence of characteristic symptoms, a detailed family history, a thorough clinical evaluation and a number of supporting tests. While exams that measure visual acuity, perception of color, and field of vision are used to arrive at ...
Focal dermal hypoplasia appears to be a rare condition, although its exact prevalence is unknown.
Chediak-Higashi syndrome is a rare disorder. About 200 cases of the condition have been reported worldwide.
Osteoporosis is a disease that thins and weakens the bones to the point that they break easily. Women and men with osteoporosis most often break bones in the hip, spine, and wrist, but osteoporosis can be the cause of bone fractures anywhere.
These resources address the diagnosis or management of infantile systemic hyalinosis: - Gene Review: Gene Review: Hyalinosis, Inherited Systemic - Genetic Testing Registry: Hyaline fibromatosis syndrome - MedlinePlus Encyclopedia: Protein-losing enteropathy These resources from MedlinePlus offer information about ...
The parathyroid glands are four pea-sized glands located on or near the thyroid gland in the neck. Occasionally, a person is born with one or more of the parathyroid glands in another location. For example, a gland may be embedded in the thyroid, in the thymusan immune system organ located in the chestor elsewhere arou...
Is Ehlers-Danlos syndrome, vascular type inherited? Ehlers-Danlos syndrome (EDS), vascular type is inherited in an autosomal dominant manner. This means that to be affected, a person only needs a change (mutation) in one copy of the responsible gene in each cell. In some cases, an affected person inherits the mutation ...
What signs and symptoms are associated with coccygodynia? The classic symptom is pain when pressure is applied to the tailbone, such as when sitting on a hard chair. Symptoms usually improve with relief of pressure when standing or walking . Other symptoms include : Immediate and severe pain when moving from sitting to...
The motor neuron diseases (MNDs) are a group of progressive neurological disorders that destroy cells that control essential muscle activity such as speaking, walking, breathing, and swallowing. Normally, messages from nerve cells in the brain (called upper motor neurons) are transmitted to nerve cells in the brain ste...
Liddle syndrome is a rare condition, although its prevalence is unknown. The condition has been found in populations worldwide.
- Urinary incontinence (UI) is the loss of bladder control, which results in the accidental loss of urine. A child with UI may not stay dry during the day or night. Although UI affects many children, it usually disappears naturally over time. - By 5 years of age, more than 98 percent of children can control urination ...
How is Ehlers-Danlos syndrome diagnosed? A diagnosis of Ehlers-Danlos syndrome is typically based on the presence of characteristic signs and symptoms. Depending on the subtype suspected, some of the following tests may be ordered to support the diagnosis: Collagen typing performed on a skin biopsy may aid in the diagn...
There has been active debate about how to treat arachnoid cysts. The need for treatment depends mostly upon the location and size of the cyst. If the cyst is small, not disturbing surrounding tissue, and not causing symptoms, some doctors will refrain from treatment. In the past, doctors placed shunts in the cyst to dr...
- Immunoglobulin A (IgA) nephropathy, also known as Bergers disease, is a kidney disease that occurs when IgA deposits build up in the kidneys, causing inflammation that damages kidney tissues. - Scientists think that IgA nephropathy is an autoimmune kidney disease, meaning that the disease is due to the bodys immune ...
Your spine, or backbone, protects your spinal cord and allows you to stand and bend. Spinal stenosis causes narrowing in your spine. The narrowing puts pressure on your nerves and spinal cord and can cause pain. Spinal stenosis occurs mostly in people older than 50. Younger people with a spine injury or a narrow spi...
What causes Parsonage Turner syndrome? The exact cause of Parsonage Turner syndrome (PTS) is unknown. Researchers suspect that most cases are due to an autoimmune response following exposure to an illness or environmental factor. In many cases, no triggering event or underlying cause can be identified. Factors known to...
Isolated microphthalmia is sometimes 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 conditio...
Signs of urethral cancer include bleeding or trouble with urination. These and other signs and symptoms may be caused by urethral cancer or by other conditions. There may be no signs or symptoms in the early stages. Check with your doctor if you have any of the following: - Trouble starting the flow of urine. ...
Peripheral neuropathy describes damage to the peripheral nervous system, which transmits information from the brain and spinal cord to every other part of the body. More than 100 types of peripheral neuropathy have been identified, each with its own characteristic set of symptoms, pattern of developmen...
These resources address the diagnosis or management of boomerang dysplasia: - Gene Review: Gene Review: FLNB-Related Disorders - Genetic Testing Registry: Boomerang dysplasia These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Dr...
When is Poland syndrome typically first diagnosed? The severity of Poland syndrome differs from person to person. As a result it is not often diagnosed or reported. Sometimes, a person does not realize they have the condition until puberty, when lopsided (asymmetrical) growth makes it more obvious.
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.
Personality disorders are a group of mental illnesses. They involve long-term patterns of thoughts and behaviors that are unhealthy and inflexible. The behaviors cause serious problems with relationships and work. People with personality disorders have trouble dealing with everyday stresses and problems. They often hav...
Pityriasis lichenoides is a skin disorder of unknown cause. There are two types of pityriasis lichenoides; a more severe form with a sudden onset that tends to be short-lived (acute) which is usually found in children, known as pityriasis lichenoides et varioliformis acuta and a more mild but long-lasting (chronic) fo...
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. Almost all cases result from new mutations in the gene and occur in people with no history of the disorder in their family.
The symptoms of early cataract may be improved with new eyeglasses, brighter lighting, anti-glare sunglasses, or magnifying lenses. If these measures do not help, surgery is the only effective treatment. Surgery involves removing the cloudy lens and replacing it with an artificial lens.
These resources address the diagnosis or management of SIDDT: - Clinic for Special Children (Strasburg, Pennsylvania) - Genetic Testing Registry: Sudden infant death with dysgenesis of the testes syndrome These resources from MedlinePlus offer information about the diagnosis and management of various health conditi...
What are the signs and symptoms of Familial esophageal achalasia? The Human Phenotype Ontology provides the following list of signs and symptoms for Familial esophageal achalasia. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the Medli...
Mutations in the ZFYVE26 gene cause spastic paraplegia type 15. This gene provides instructions for making a protein called spastizin. This protein is important in a process called autophagy, in which worn-out cell parts and unneeded proteins are recycled within cells. Specifically, spastizin is involved in the formati...
What causes cold agglutinin disease? Cold agglutinin disease is typically classified as primary (unknown cause) or secondary (caused by an underlying condition). Secondary cold agglutinin disease may be associated with: Bacterial Infections such as mycoplasma, Legionnaires' disease, syphilis, listeriosis, or E. Coli Vi...
Protein C deficiency is caused by mutations in the PROC gene. This gene provides instructions for making protein C, which is found in the bloodstream and is important for controlling blood clotting. Protein C blocks the activity of (inactivates) certain proteins that promote blood clotting. Most of the mutations that ...
Diabetes is a disease in which your blood glucose, or blood sugar, levels are too high. Glucose comes from the foods you eat. Insulin is a hormone that helps the glucose get into your cells to give them energy. With type 1 diabetes, your body does not make insulin. With type 2 diabetes, the more common type, your body ...
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.
How might Noonan syndrome be treated? Management generally focuses on the specific signs and symptoms present in each person. Treatments for the complications of Noonan syndrome (such as cardiovascular abnormalities) are generally standard and do not differ from treatment in the general population. Developmental disabi...
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.
How might congenital adrenal hyperplasia be treated? The best treatment options for congenital adrenal hyperplasia (CAH) depend on many factors including the type of CAH and the signs and symptoms present in each person. Many people with CAH require steroids to replace the low hormones. These medications will need to b...
Is genetic testing available for glutaric acidemia type I? Yes. The Genetic Testing Registry (GTR) provides information about the labs that offer genetic testing for this condition. The intended audience for the GTR is health care providers and researchers. Therefore, patients and consumers with specific questions abou...
Acinetobacter causes a variety of diseases, ranging from pneumonia to serious blood or wound infections, and the symptoms vary depending on the disease. Acinetobacter may also “colonize” or live in a patient without causing infection or symptoms, especially in tracheostomy sites or open wounds.
PLOSL is a very rare condition. It was first reported in the Finnish population, where it has an estimated prevalence of 1 to 2 per million people. This condition has also been diagnosed in more than 100 people in the Japanese population. Although affected individuals have been reported worldwide, PLOSL appears to be l...
Freiberg's disease is rare condition that primarily affects the second or third metatarsal (the long bones of the foot). Although people of all ages can be affected by this condition, Freiberg's disease is most commonly diagnosed during adolescence through the second decade of life. Common signs and symptoms include pa...
There is no specific treatment for KFD, but early hospitalization and supportive therapy is important. Supportive therapy includes the maintenance of hydration and the usual precautions for patients with bleeding disorders.
Pigment-dispersion syndrome is an eye disorder that occurs when pigment granules that normally adhere to the back of the iris (the colored part of the eye) flake off into the clear fluid produced by the eye (aqueous humor). These pigment granules may flow towards the drainage canals of the eye, slowly clogging them and...
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.
What are the signs and symptoms of Hypomagnesemia 6? The Human Phenotype Ontology provides the following list of signs and symptoms for Hypomagnesemia 6. 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 ...
How is chromosome 3p- syndrome diagnosed? There are several different specialized tests that can be used to diagnose a chromosome 3p- syndrome. These include: Karyotype - a karyotype is a laboratory test that produces an image of a person's chromosomes. This test can be used to diagnose large deletions. FISH - a labora...
The different types of congenital fibrosis of the extraocular muscles have different patterns of inheritance. CFEOM1 and CFEOM3 are 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 mutati...
NOMID is a very rare disorder; approximately 100 affected individuals have been reported worldwide.
These resources address the diagnosis or management of Kleefstra syndrome: - Gene Review: Gene Review: Kleefstra Syndrome - Genetic Testing Registry: Chromosome 9q deletion syndrome These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Test...
What causes pigmented purpuric eruption? The cause of pigmented purpuric eruption is unknown. Occasionally, it occurs as a reaction to a medication, food additive, viral infection or following exercise. In rare cases, there appears to be a genetic component.
The severity and duration of an attack of shingles can be significantly reduced by immediate treatment with antiviral drugs, which include acyclovir, valcyclovir, or famcyclovir. Antiviral drugs may also help stave off the painful after-effects of shingles known as postherpetic neuralgia. Other treatments for postherpe...
Can thyroglossal duct cysts cause weight loss? Weight loss is not commonly cited as a specific symptom of thyroglossal duct cysts, however large cysts can cause difficulty swallowing and breathing. Infected cysts may be tender with associated difficulty in swallowing, loss of voice, fever, and increasing mass size. Som...
What treatment is available for meningeal hemangiopericytoma? Radical surgical resection with removal of all meningeal attachments is typically the preferred treatment. However this treatment option is generally possible in only 50-67% of patients who have meningeal hemangiopericytoma. Embolization prior to surgery is ...
What are the signs and symptoms of Deafness-infertility syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for Deafness-infertility syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the Medli...
What are the signs and symptoms of Pilomatrixoma? The Human Phenotype Ontology provides the following list of signs and symptoms for Pilomatrixoma. 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 loo...
A blood test will show if you have hepatitis A. Blood tests are done at a doctors office or outpatient facility. A blood sample is taken using a needle inserted into a vein in your arm or hand. The blood sample is sent to a lab to test for hepatitis A.
The two types of VUR are primary and secondary. Most cases of VUR are primary and typically affect only one ureter and kidney. With primary VUR, a child is born with a ureter that did not grow long enough during the childs development in the womb. The valve formed by the ureter pressing against the bladder wall does no...
The NINDS supports research on disorders of the brain, spinal cord, and peripheral nerves that can cause paresthesia. The goals of this research are to increase scientific understanding of these disorders and to find ways to prevent, treat, and cure them.
Maternally inherited diabetes and deafness (MIDD) is a form of diabetes that is often accompanied by hearing loss, especially of high tones. The diabetes in MIDD is characterized by high blood sugar levels (hyperglycemia) resulting from a shortage of the hormone insulin, which regulates the amount of sugar in the blood...
Hypochromic microcytic anemia with iron overload is likely a rare disorder; at least five affected families have been reported in the scientific literature.
In this test, a special dye is injected into your arm. Pictures are taken as the dye passes through the blood vessels in your retina. The test allows your eye care professional to identify any leaking blood vessels and recommend treatment.
La Crosse (LAC) encephalitis is a mosquito-borne virus that was first described in La Crosse, Wisconsin in 1963. Since then, it has been reported in several Midwestern and Mid-Atlantic states. The LAC virus is one of many mosquito-transmitted viruses that can cause an inflammation of the brain (encephalitis). About 80-...
Treacher Collins syndrome (TCS) is a condition that affects the development of bones and other tissues of the face. The signs and symptoms vary greatly, ranging from almost unnoticeable to severe. Most affected people have underdeveloped facial bones, particularly the cheek bones, and a very small jaw and chin (microgn...