Ankyloblepharon-ectodermal dysplasia-cleft lip/palate (AEC) syndrome, which is also known as Hay-Wells syndrome, ankyloblepharon-ectodermal defects-cleft lip/palate, ankyloblepharon-ectodermal ...
Adult-onset Still’s disease (AOSD) is a rare inflammatory disorder that can affect the entire body (systemic disease). The cause of the disorder is unknown (idiopathic). Affected individuals may ...
Adult-onset leukoencephalopathy with axonal spheroids and pigmented glia (ALSP) also known as hereditary diffuse leukoencephalopathy with spheroids (HDLS) and pigmentary orthochromatic ...
Adult polyglucosan body disease (APBD) is a rare, genetic disorder characterized by a deficiency of the glycogen-branching enzyme, progressive pyramidal paraparesis, and distal sensory deficit in ...
Adult neuronal ceroid lipofuscinosis (ANCL) is a general term for several rare genetic disorders that belong to a group of progressive, degenerative neurometabolic disorders known as the neuronal ...
ADNP syndrome, also known as Helsmoortel-Van Der Aa syndrome, is a neurodevelopmental genetic disorder caused by changes (mutations) in the ADNP gene. These mutations occur spontaneously in the ...
Adie syndrome, or Holmes-Adie syndrome, is a rare neurological disorder affecting the pupil of the eye. In most patients, the pupil is larger than normal (dilated) and slow to react in response ...
Adenylosuccinate lyase deficiency is an inherited metabolic disorder that is characterized by three categories (fatal neonatal form, type I, and type II), each of which has a specific age of ...
ADCY5-related dyskinesia is a neurologic disorder with a variety of movement abnormalities. Dyskinesia means that affected individuals have trouble controlling voluntary movements. Voluntary ...
Adams-Oliver syndrome (AOS) is a rare inherited condition present at birth that involves changes to the limbs and scalp. Symptoms may include areas of missing skin on the scalp, limb ...
Acute promyelocytic leukemia (APL) is a blood cancer characterized by a marked increase in a type of white blood cells known as promyelocytes, a type of immature white blood cell. It develops in ...
Acute intermittent porphyria (AIP) is a rare metabolic disorder that is characterized by partial deficiency of the enzyme hydroxymethylbilane synthase (also known as porphobilinogen deaminase). ...
Acute eosinophilic pneumonia (AEP) is a rare disorder characterized by the rapid accumulation of eosinophils in the lungs (pulmonary eosinophilia). Eosinophils are a type of white blood cell and ...
Acute disseminated encephalomyelitis (ADEM) is a neurological, immune-mediated disorder in which widespread inflammation of the brain and spinal cord damages tissue known as white matter. White ...
ACTH deficiency arises as a result of decreased or absent production of adrenocorticotropic hormone (ACTH) by the pituitary gland. A decline in the concentration of ACTH in the blood leads to a ...
Acromicric Dysplasia is a condition characterized by severely short stature, short limbs, stiff joints, and distinctive facial features and an extremely rare inherited disorder characterized by ...
Acromesomelic dysplasia is an extremely rare, inherited, progressive skeletal disorder that results in a particular form of short stature known as short-limb dwarfism. The disorder is ...
Acrodysostosis is a rare genetic disorder characterized by skeletal malformations, growth delays, short stature, and distinctive facial features caused, in part, by underdeveloped (hypoplastic) ...
Acrodermatitis enteropathica (AE) is a disorder of zinc metabolism caused by a defect in the absorption of zinc, that occurs in one of three forms: an inborn (congenital) form and two acquired ...
Acrocallosal syndrome, Schinzel type is a rare genetic disorder that is apparent at birth (congenital). Associated symptoms and findings may be variable, including among affected members of the ...