Dysautonomia (or autonomic dysfunction) is a group of conditions where the autonomic nervous system (ANS) is not functioning properly. It is believed that around 70 million people are affected by someone sort of autonomic dysfunction world wide. There are around 15 types of Dysautonomia with multiple different causes and treatment options depending on the type. 

Of the 15 types, the most common types seen associated with Ehlers-Danlos can include Postural Orthostatic Tachycardia Syndrome (POTS), Orthostatic Hypotension (OH), Neurocardiogenic Syncope (NS) and Inappropriate Sinus Tachycardia (IST). Other types of Dysautonomia are Familial Dysautonomia, Diabetic Autonomic Neuropathy,  Baroreflex Failure, Autonomic Dysreflexia, Multiple System Atrophy, Cerebral Salt Wasting Syndrome, Panayiotopoulos Syndrome, Postprandial Hypotension, Pure Autonomic Failure, 

Autonomic Nervous System

Postural Orthostatic Tachycardia Syndrome. 

Check out Dysautonomia International for more information on the different types of Dysautonomia