Pure Autonomic Failure

**Definition:** A degenerative disease of the AUTONOMIC NERVOUS SYSTEM that is characterized by idiopathic ORTHOSTATIC HYPOTENSION and a greatly reduced level of CATECHOLAMINES. No other neurological deficits are present.

**Tree numbers:** - C10.177.575.650

**Synonyms:** - Autonomic Failure, Pure - Bradbury-Eggleston Syndrome