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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.
Primary autonomic failure (also called primary dysautonomia) refers to a category of dysautonomias — conditions in which the autonomic nervous system does not function properly. In primary dysautonomias, the autonomic dysfunction occurs as a primary condition (as opposed to resulting from another disease). [ 1 ]
A tilt table test (TTT), occasionally called upright tilt testing (UTT), is a medical procedure often used to diagnose dysautonomia or syncope. Patients with symptoms of dizziness or lightheadedness, with or without a loss of consciousness ( fainting ), suspected to be associated with a drop in blood pressure or positional tachycardia are good ...
[12] [13] Further research identified multiple causes for these syndromic findings, now grouped as primary autonomic disorders (also called primary dysautonomia), including Pure Autonomic Failure, Multiple System Atrophy, and Parkinson's. The primary differentiating characteristic of Pure autonomic failure is decreased circulation and synthesis ...
Hereditary sensory and autonomic neuropathy type 6 (HSAN6), also known as familial dysautonomia with contractures, [5] is a severe autosomal recessive disorder characterized by neonatal hypotonia, respiratory and feeding difficulties, lack of psychomotor development, and autonomic abnormalities including labile cardiovascular function, lack of ...
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]
Orthostatic hypotension and significant gastrointestinal symptoms are also hallmarks of paraneoplastic dysautonomia. Paraneoplastic dysautonomia has been linked to thymoma, small-cell lung carcinoma, and, less frequently, breast cancer or lymphoma. At the time of the development of autonomic symptoms, the underlying malignancy is usually unknown.
Print/export Download as PDF; Printable version; In other projects ... Familial dysautonomia is a genetic disorder characterized by abnormalities of sensory and ...