dysautonomia
any disease or malfunction, mostly of neurogenic origin, of the autonomic nervous system
Primary autonomic failure
Disorders of the autonomic nervous system occurring as a primary condition. Manifestations can involve any or all body systems but commonly affect the blood pressure and heart rate.
Vegetative-vascular dystonia
Vegetative-vascular dystonia
pure autonomic failure
neurodegenerative disease that affects the sympathetic branch of the autonomous nervous system and that manifests with orthostatic hypotension