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Dysautonomia, autonomic failure, or autonomic dysfunction is a condition in which the autonomic nervous system (ANS) does not work properly. This may affect the functioning of the heart , bladder , intestines , sweat glands , pupils , and blood vessels.
Chronic and progressive onset of autonomic symptoms may indicate diabetes, amyloidosis, or Sjogren's syndrome. AAG can be difficult to distinguish from degenerative autonomic disorders such as pure autonomic failure or multiple system atrophy when autonomic symptoms appear gradually. When the time course is unknown, the presence of prominent ...
It was initially classified as "F45.3" (under somatoform disorder of the heart and cardiovascular system) in ICD-10, [19] and is now classified under "somatoform autonomic dysfunction". Da Costa's syndrome involves a set of symptoms that include left-sided chest pains, palpitations, breathlessness, and fatigue in response to exertion.
Paroxysmal sympathetic hyperactivity (PSH) is a syndrome that causes episodes of increased activity of the sympathetic nervous system.Hyperactivity of the sympathetic nervous system can manifest as increased heart rate, increased respiration, increased blood pressure, diaphoresis, and hyperthermia. [1]
Hereditary sensory and autonomic neuropathy type I (HSAN I) or hereditary sensory neuropathy type I (HSN I) is a group of autosomal dominant inherited neurological diseases that affect the peripheral nervous system particularly on the sensory and autonomic functions.
Autoimmune gastrointestinal dysmotility (AGID) is an autoimmune disease autonomic neuropathy affecting the gastrointestinal organs and digestive system of the body. Dysmotility is when the strength or coordination of the esophagus, stomach or intestines muscles do not work as they should. [1]
Orthostatic intolerance (OI) is the development of symptoms when standing upright that are relieved when reclining. [1] There are many types of orthostatic intolerance. OI can be a subcategory of dysautonomia, a disorder of the autonomic nervous system [2] occurring when an individual stands up. [3]
Pure autonomic failure (PAF) is an uncommon, sporadic neurodegenerative condition marked by a steadily declining autonomic regulation. [3] Bradbury and Eggleston originally described pure autonomic failure in 1925. [4] Patients usually present with orthostatic hypotension or syncope in midlife or later.