Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Primary autonomic failure
Introduction
There are three diseases classifed as primary autonomic failure: pure autonomic failure, multiple system atrophy (also known as Shy-Drager syndrome), and Parkinson disease.