Rare Immunology News

Cerebro-costo-mandibular syndrome

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Q87.8

Cerebro-costo-mandibular syndrome (CCMS) is a very rare condition characterized by severe micrognathia (abnormally small jaw), abnormalities of the roof of the mouth (palate), and rib defects. Other signs and symptoms may include intellectual disability and microcephaly (small head size). In some cases, the features cause respiratory problems in early infancy and can be life-threatening.[1][2] Most…

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Long QT syndrome 6

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Ependymoma

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The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 251636 Definition Ependymoma is the most frequent intramedullary tumor in adults (but accounts for only 10-12% of pediatric central nervous system tumors), and can be benign or anaplastic. Ependymoma arise from the ependymal cells of…

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Lymphomatous thyroiditis

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Madras motor neuron disease

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The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 137867 Definition Madras motor neuron disease (MMND) is characterized by weakness and atrophy of limbs, multiple lower cranial nerve palsies and sensorineural hearing loss. Epidemiology Less than 200 cases have be reported to date, predominantly…

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Hutterite cerebroosteonephrodysplasia syndrome

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Treacher Collins syndrome 3

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Charcot-Marie-Tooth disease type 2B

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G60.0

Charcot-Marie-Tooth disease type 2B (CMT2B) is an inherited peripheral neuropathy with onset in the second or third decade of life. Common signs and symptoms include severe loss of sensation in the feet, lower legs, hands, and forearms; reduced tendon reflexes in the ankles; weakness in the lower limbs; and the loss of muscle tissue (muscle…

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Medium-chain 3-ketoacyl-coa thiolase deficiency

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Medulloblastoma, childhood

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MEGDEL syndrome

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Chondrodysplasia situs inversus imperforate anus polydactyly

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X-linked skeletal dysplasia-intellectual disability syndrome

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Q87.5

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 1436 Definition Skeletal dysplasiaintellectual disability syndrome combines skeletal anomalies (short stature, ridging of the metopic suture, fusion of cervical vertebrae, thoracic hemivertebrae, scoliosis, sacral hypoplasia and short middle phalanges) and mild intellectual deficit. It has…

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Microcephaly

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Q02

Microcephaly is a rare neurological condition in which a person’s head is significantly smaller than expected based on standardized charts. Some cases of microcephaly are detected at birth, while others develop in the first few years of life.[1][2] Some children with microcephaly have normal intelligence and development. However, microcephaly can be associated with seizures; developmental…

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Chromosome 14q duplication

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Weber syndrome

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Orofaciodigital syndrome 2

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Q87.0

Orofaciodigital syndrome type 2 (OFDS 2) is a genetic condition that affects the development of the mouth, face, hands, and feet.[1] It belongs to a group of disorders called orofaciodigital syndromes (OFDS), which are characterized by mouth malformations, unique facial findings, and abnormalities of the fingers and/or toes.[2] Other organs might be affected in OFDS, defining…

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Ring chromosome 22

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Q93.2

Ring chromosome 22 is a rare condition caused by having an abnormal chromosome 22 that forms a ring. In this chromosome abnormality, a segment on the short (p) arm and a segment on the long (q) arm of 22 are missing. The amount of material lost varies from person to person. The remaining ends of chromosome…

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Chromosome 6p duplication

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Chromosome 6p duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the short arm (p) of chromosome 6. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in…

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Muscular dystrophy

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G71.0

Muscular dystrophy (MD) refers to a group of more than 30 genetic diseases characterized by progressive weakness and degeneration of the skeletal muscles that control movement. Some forms of MD are seen in newborns, infants or children, while others have late-onset and may not appear until middle age or later. The disorders differ in terms of…

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Chromosome Xp deletion

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Peters anomaly

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Q13.4

Peters anomaly is a disorder of the eye which involves thinning and clouding of the cornea and attachment of the iris to the cornea, which causes blurred vision. It may also be associated with clouding of the lens of the eye (cataracts) or other lens abnormalities.[1] The cause of Peters anomaly is unknown; it may…

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Myxopapillary ependymoma

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D43.2

Myxopapillary ependymoma (MEPN) is a slow-growing ependymoma (a type of glioma, which is a tumor that arises from the supportive tissue of the brain and spinal cord).[1] They tend to occur in the lower part of the spinal column and are usually considered to be benign, low-grade or grade I tumors.[2] The age of diagnosis ranges…

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Chudley-Mccullough syndrome

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Weissenbacher-Zweymuller syndrome

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Neu Laxova syndrome

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Q87.8

Neu Laxova syndrome (NLS) is a genetic disorder affecting many parts of the body. Babies born with NLS usually grow poorly during pregnancy (intrauterine growth restriction). At birth, they may be small (low birth weight and short in length) and their facial features are usually different and distinct. The babies may have a small head…

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Congenital lipoid adrenal hyperplasia

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E25.0

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 90790 Definition A disorder that is one of the most severe forms of congenital adrenal hyperplasia (CAH) characterized by severe adrenal insufficiency and sex reversal in males. Epidemiology The prevalence is unknown but it is…

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Plagiocephaly

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Polymorphic reticulosis

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Pruritic urticarial papules plaques of pregnancy

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O26.8

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 64745 Definition A rare skin disease characterized by urticarial papules and plaques with severe pruritus mainly on the abdomen, buttocks, and proximal thighs. The condition usually develops during the third trimester of the first pregnancy,…

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Zechi Ceide syndrome

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Q87.8

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 217017 Definition Zechi-Ceide syndrome is a rare, genetic, multiple congenital anomalies/dysmorphic syndrome characterized by occipital atretic cephalocele associated with a specific facial dysmorphism (consisting of prominent forehead, narrow palpebral fissures, midface deficiency, narrow, malformed ears,…

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Spastic paraplegia with precocious puberty

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Okamoto syndrome

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Q87.8

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 2729 Definition Okamoto syndrome is characterised by congenital hydronephrosis, intellectual deficit, growth retardation, cleft palate, generalised hypotonia and a characteristic face. Cardiac anomalies have also been reported. To date, 6 cases have been reported. Visit…

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Cogan’s syndrome

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H16.3

Cogan syndrome is a rare autoimmune disease that affects the eyes and inner ears. Symptoms of the syndrome include irritation and pain in the eyes, decreased vision, hearing loss, and vertigo. Other symptoms may include joint or muscle pain or inflammation of the blood vessels.[1]  The exact cause of Cogan syndrome is not well-understood. It is thought that the syndrome…

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Pseudodiastrophic dysplasia

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Q78.8

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 85174 Definition Pseudodiastrophic dysplasia is characterized by rhizomelic shortening of the limbs and severe clubfoot deformity, in association with elbow and proximal interphalangeal joint dislocations, platyspondyly, and scoliosis. It has been described in about 10…

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Optic atrophy polyneuropathy deafness

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Combined oxidative phosphorylation deficiency 16

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E88.8

Combined oxidative phosphorylation deficiency 16, also know as infantile hypertrophic cardiomyopathy, is characterized by decreased levels of mitochondrial complexes. The symptoms and signs described include an enlarged heart muscle (hypertrophic cardiomyopathy) and fatty liver (hepatic steatosis), as well as eye problems, headache, paralysis of one side of the body, Leigh-like lesions on brain magnetic resonance imaging…

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Pyomyositis

Unknown
M60.0

Pyomyositis is rare bacterial infection of the skeletal muscle (the muscles used for movement). Signs and symptoms may include pain and tenderness of the affected muscle, fever, and abscess formation. If left untreated, the abscess may extend into the bone and joint or blood poisoning may occur. Approximately 90% of cases are caused by the…

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Oto-Palatal-digital syndrome

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Conductive deafness with malformed external ear

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The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 3216 Definition A very rare, syndromic genetic deafness characterized by mild to moderate conductive hearing loss, dysmorphic pinnae and lip pits or dimples. The pinnae are usually small, cup-shaped, with helix folded forward, and hearing…

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Renal dysplasia-limb defects syndrome

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Q87.8

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 3404 Definition Ulbright-Hodes syndrome is characterised by renal dysplasia, growth retardation, phocomelia or mesomelia, radiohumeral fusion, rib abnormalities, anomalies of the external genitalia and a potter-like facies. The syndrome has been described in three infants…

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Pediatric acute-onset neuropsychiatric syndrome

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Pediatric acute-onset neuropsychiatric syndrome (PANS) is a condition defined by sudden onset of obsessive-compulsive symptoms and/or severe eating restrictions, along with at least two other cognitive, behavioral, or neurological symptoms.[1] Examples of other symptoms include anxiety, depression, tics, personality changes, decline in school performance, and sensory sensitivities.[2][3] Symptoms typically begin during childhood but may begin at any age.[4]…

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Microphthalmia with cataract 1

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Syndactyly type 3

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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…

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Sandhaus Ben-Ami syndrome

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Sarcoma botryoides

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Laryngomalacia

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Q31.5

Laryngomalacia is an abnormality of the voice box (larynx) that leads to the inward collapse of the airway when air is drawn into the lungs (inspiration). It usually becomes apparent at birth or shortly after birth. The most common symptom is noisy breathing (stridor) that is often worse when the infant is on his/her back…

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X-linked dominant scapuloperoneal myopathy

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X-linked scapuloperoneal myopathy is an inherited muscular dystrophy characterized by weakness and wasting of the muscles in the lower legs and the area of the shoulder blades. In some individuals, facial muscles may also be affected. While the progression varies from case to case, it tends to be relatively slow.[1][2] Some cases of scapuloperoneal myopathy…

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Developmental prosopagnosia

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Developmental prosopagnosia is a lifelong condition that impairs a person’s ability to recognize faces, in the absence of sensory visual problems and intellectual impairment.[1] People with this condition have normal intelligence and memory, typical low-level vision, and no history of brain injury. They typically learn to use non-face cues including voice, walking style (gait) and…

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Spondyloepimetaphyseal dysplasia, Aggrecan type

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Q77.7

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 171866 Definition Spondyloepimetaphyseal dysplasia, aggrecan type is a new form of skeletal dysplasia characterized by severe short stature, facial dysmorphism and characteristic radiographic findings. Epidemiology To date, three cases have been described, all originating from…

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Primary hyperaldosteronism

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Primary hyperaldosteronism is a disorder caused by excess production of the hormone aldosterone by the adrenal glands. The main symptom of primary hyperaldosteronism is high blood pressure (hypertension), but other symptoms may include headaches, weakness, swelling (edema), and muscle spasms (tetany). The cause of primary hyperaldosteronism can vary. One cause may be an adenoma, or…

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Siderosis

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Dentin dysplasia, coronal

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K00.5

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 99791 Definition Dentin dysplasia type II (DD-II) is a rare mild form of dentin dysplasia (DD, see this term) characterized by normal tooth roots but abnormal primary dentition. Epidemiology Prevalence of DD-II is not known….

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Spastic paraplegia 12

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G11.4

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 100993 Definition A pure form of hereditary spastic paraplegia characterized by a childhoodto adulthood-onset of slowly progressive lower limb spasticity and hyperreflexia of lower extremities, extensor plantar reflexes, distal sensory impairment, variable urinary dysfunction and…

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Pituitary hormone deficiency, combined 3

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The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 231720 Definition Non-acquired combined pituitary hormone deficiencysensorineural hearing loss-spine abnormalities syndrome is a rare, genetic, non-acquired, combined pituitary hormone deficiency disorder characterized by panhypopituitarism (with or without ACTH deficiency) associated with spine abnormalities, including frequent…

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Spondylometaphyseal dysplasia type A4

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Q77.8

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 168555 Definition Spondylometaphyseal dysplasia, A4 type is a rare primary bone dysplasia disorder characterized by disproportionate short stature, severe femoral neck deformity, marked metaphyseal abnormalities and platyspondyly consisting of ovoid vertebral bodies that have an…

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Craniosynostosis Fontaine type

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Hairy elbows

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Q84.2

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 2220 Definition Hypertrichosis cubiti is a rare hair anomaly characterized by symmetrical, congenital or early-onset, bilateral hypertrychosis localized on the externsor surfaces of the upper extremities (especially the elbows). Short stature, or other abnormalities, such…

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Symphalangism distal

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Cryoglobulinemic vasculitis

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D89.1

Cryoglobulinemic vasculitis occurs when the body makes a mix of abnormal immune system proteins called cryoglobulins. At temperatures less than 98.6 degrees Fahrenheit (normal body temperature), cryoglobulins become solid or gel-like and can block blood vessels. This causes a variety of health problems. Many people with cryoglobulins will not experience any symptoms. When symptoms occur, they…

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Hantavirus pulmonary syndrome

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Hantavirus pulmonary syndrome (HPS) is a severe, respiratory disease caused by infection with a hantavirus. People can become infected with a hantavirus through contact with hantavirus-infected rodents or their saliva, urine and/or droppings. Early symptoms universally include fatigue, fever and muscle aches (especially in the thighs, hips, and/or back), and sometimes include headaches, dizziness, chills,…

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Temple syndrome

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The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 254516 Definition Temple syndrome is a rare, genetic disease characterized by pre-and postnatal growth delay, feeding difficulties, muscular hypotonia, motor developmental delay (with or without mild intellectual disability) and mild facial dysmorphism, such as broad,…

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Kyphoscoliotic Ehlers-Danlos syndrome

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Q79.6

Kyphoscoliotic Ehlers-Danlos syndrome is an inherited connective tissue disorder that is caused by defects in a protein called collagen. Common signs and symptoms include hyperextensible skin that is fragile and bruises easily; joint hypermobility; severe hypotonia at birth; progressive kyphoscoliosis (kyphosis and scoliosis); and fragility of the sclera.[1][2] kyphoscoliosis EDS is caused by changes (mutations) in…

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Hereditary cerebral hemorrhage with amyloidosis

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E85.4+ I68.0*

Hereditary cerebral hemorrhage with amyloidosis (HCHWA) is a neurological condition in which an abnormal protein (amyloid) builds up in the walls of the arteries of the brain (and less frequently, veins). This process is known as amyloid deposition, which can lead to strokes, seizures, neurological deficits, cognitive decline, and dementia. Symptoms usually present before the 5th…

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TORCH syndrome

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Phyllodes tumor of the breast

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D48.6

Phyllodes tumors of the breast are rare tumors that start in the connective (stromal) tissue of the breast.[1][2] They get their name from the leaf-like pattern in which they grow (phyllodes means leaf-like in Greek).[2][3] They are most common in women in their 30s and 40s, although women of any age can be affected. These…

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Hypohidrotic ectodermal dysplasia with hypothyroidism and ciliary dyskinesia

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Q82.4

Hypohidrotic ectodermal dysplasia with hypothyroidism and ciliary dyskinesia is a rare condition characterized by alopecia (hair loss); nail dystrophy (abnormal development of the nails); ophthalmic (eye-related) complications; thyroid dysfunction (primary hypothyroidism); hypohidrosis; ephelides (freckles); enteropathy (disease of the intestine); and respiratory tract infections due to ciliary dyskinesia.[1] These features have lead to the acronym ANOTHER syndrome…

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Xanthinuria type 2

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E79.8

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 93602 Definition Type II xanthinuria, a type of classical xanthinuria (see this term), is a rare autosomal recessive disorder of purine metabolism (see this term) characterized by the deficiency of both xanthine dehydrogenase and aldehyde…

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Dermochondrocorneal dystrophy of François

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The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 79149 Definition Dermochondrocorneal dystrophy is characterised by osteochondrodystrophy of the hands and feet, corneal dystrophy and the presence of skin nodules clustered around the metacarpophalangeal and interphalangeal joints, around the nose and ears and on…

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Microsomia hemifacial radial defects

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Q75.8

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 2549 Definition Oculoauriculovertebral spectrum (OAVS) with radial defects is a rare branchial arches and limb primordia development disorder characterized by variable degrees of unior bilateral craniofacial malformation and radial defects that result in extremely variable…

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Deafness progressive cataract autosomal dominant

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Abetalipoproteinemia

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E78.6

Abetalipoproteinemia is a very rare condition that affects fat and vitamin absorption by the intestines and liver, leading to very low LDL-cholesterol and malnutrition. Early symptoms of this condition include diarrhea, vomiting, and poor growth. Without treatment, later complications may include muscle weakness, poor night and color vision, tremors, and speech difficulties.[1][2] The long-term outcome can…

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Winchester syndrome

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Glanzmann thrombasthenia

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Glanzmann thrombasthenia (GT) is a rare inherited blood clotting disorder that is present at birth. It is characterized by the impaired function of specialized blood cells, called platelets, that are essential for proper blood clotting. Signs and symptoms vary greatly from person to person. Symptoms usually include abnormal bleeding, which can be severe. Other symptoms…

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Alpha-thalassemia-abnormal morphogenesis

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Dent disease

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Dent disease is a chronic kidney disease that primarily affects males. While symptoms and severity vary, they usually begin in childhood and worsen over time. The most common feature of Dent disease is proteinuria (protein in the urine). Other common features include excess calcium in the urine (hypercalciuria); calcium deposits in the kidneys (nephrocalcinosis); and kidney…

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Episodic ataxia with nystagmus

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G11.8

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 97 Definition Episodic ataxia type 2 (EA2) is the most frequent form of Hereditary episodic ataxia (EA; see this term) characterized by paroxysmal episodes of ataxia lasting hours, with interictal nystagmus and mildly progressive ataxia….

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Devriendt syndrome

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Adult-onset immunodeficiency with anti-interferon-gamma autoantibodies

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D84.8

Adult-onset immunodeficiency with antiinterferon-gamma autoantibodies is an immunodeficiency disorder. It is associated with susceptibility to disseminated infections (dispersed throughout the body) caused by organisms that typically affect only people with weak immune systems (opportunistic pathogens).[1] People with this disorder produce higher amounts of anti-interferon-gamma autoantibodies. These are specific immune system proteins that mistakenly target a person’s…

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DICER1-related pleuropulmonary blastoma cancer predisposition syndrome

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DICER1-related pleuropulmonary blastoma cancer predisposition syndrome causes a moderately increased risk for certain cancers and tumors. The lungs, kidneys, ovaries, and thyroid are the most commonly involved sites. Pleuropulmonary blastoma is the most commonly associated tumor and often occurs in infants and young children. Cysts in the kidneys (cystic nephroma) are also associated with DICER1…

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Acrodysplasia scoliosis

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Q87.5

Acrodysplasia scoliosis is a rare condition that has been reported in two brothers. The condition is characterized by scoliosis, brachydactyly (unusually short fingers and toes), spina bifida occulta, and carpal synostosis (fused bones of the wrist). The underlying genetic cause of the condition is unknown, but it appears to be inherited in an autosomal recessive manner….

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Parapsoriasis

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Parapsoriasis describes a group of skin diseases that can be characterized by scaly patches or slightly elevated papules and/or plaques (red, scaly patches) that have a resemblance to psoriasis. However, this description includes several inflammatory cutaneous diseases that are unrelated with respect to pathogenesis, histopathology, and response to treatment. Because of the variation in clinical presentation…

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Duane-radial ray syndrome

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Q87.8

Duane-radial ray syndrome (DRRS) is a disorder that affects the eyes and causes abnormalities of bones in the arms and hands. This condition is characterized by a particular problem with eye movement called Duane anomaly (also known as Duane syndrome). Other features include bone abnormalities in the hands (malformed or absent thumbs, an extra thumb, or…

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Welander distal myopathy, Swedish type

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G71.0

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 603 Definition A rare distal myopathy characterized by weakness in the distal upper extremities, usually finger and wrist extensors which later progresses to all hand muscles and distal lower extremity, primarily in toe and ankle…

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Acute megakaryoblastic leukemia

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C94.2

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 518 Definition A rare acute myeloid leukemia that occurs predominantly in childhood and particularly in children with Down syndrome (DS-AMKL). Nonspecific symptoms may be irritability, weakness, and dizziness while specific symptoms include pallor, fever, mucocutaneous…

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Sepiapterin reductase deficiency

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G24.1

Sepiapterin reductase deficiency is a neurometabolic disorder characterized by a pattern of involuntary sustained muscle contractions known as dystonia. Other common features include axial hypotonia , oculogyric crises, and delays in motor and cognitive development. The condition is caused by mutations in the SPR gene. It is inherited in an autosomal recessive fashion.[1][2] Treatment with levodopa (L-dopa) in combination with…

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Adenosine Deaminase 2 deficiency

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M30.8

Adenosine Deaminase 2 deficiency is an inherited disorder causing inflammation in the body, especially in the tissues that make up the blood vessels (vasculitis). [1][2] Though the severity and age of onset can vary, most patients begin having symptoms within the first decade of life. Symptoms may include the following: recurrent strokes, fevers, muscle pain,…

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Spinal muscular atrophy with respiratory distress 1

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G12.2

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Anemia due to Adenosine triphosphatase deficiency

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Langer mesomelic dysplasia

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Q87.1

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 2632 Definition A rare, genetic skeletal dysplasia characterized by severe disproportionate short stature with mesomelic and rhizomelic shortening of the upper and lower limbs. Epidemiology The exact prevalence is unknown. More than 100 cases have…

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Neonatal adrenoleukodystrophy

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E71.3

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs. Orpha Number: 44 Definition A variant of intermediate severity of the PBD-Zellweger syndrome spectrum (PBD-ZSS) charcterized by hypotonia, leukodystrophy, and vision and sensorineural hearing deficiencies. Phenotypic overlap is seen between NALD and infantile Refsum disease (IRD). Epidemiology…

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Dystrophinopathy

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Arthrochalasia Ehlers-Danlos syndrome

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Q79.6

Arthrochalasia Ehlers-Danlos syndrome (aEDS) is an inherited connective tissue disorder that is caused by defects in a protein called collagen. Common symptoms include severe joint hypermobility; congenital hip dislocation; fragile, hyperextensible skin; hypotonia; and kyphoscoliosis (kyphosis and scoliosis).[1][2] EDS, arthrochalasia type is caused by changes (mutations) in the COL1A1 gene or the COL1A2 gene and is…

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Epidermolysis bullosa simplex, generalized

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Q81.0

Epidermolysis bullosa simplex (EBS), generalized is a form of epidermolysis bullosa, a group of genetic conditions that cause the skin to be fragile and blister easily. This disorder usually presents at birth or during infancy and results in widespread blisters over the body’s surface.[1][2][3] Though it is not a common feature of this type, scarring may occur. There…

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Agnathia-microstomia-synotia

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Noble Bass Sherman syndrome

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Q15.8

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Otulipenia

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Elective mutism

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Pseudopseudohypoparathyroidism

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E20.1

Pseudopseudohypoparathyroidism (PPHP) is an inherited condition that causes short stature, round face, and short hand bones.[1][2] PPHP causes joints and other soft tissues in the body to harden. It also affects how bones are formed. As a result, PPHP can cause bone, joint, and nerve damage, and this damage can cause lasting pain.[3] Some people…

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