Although autonomic neuropathy is a neurological condition, it involves many systems and therefore sometimes requires more then one specialist. If you know the root cause, then your neurologist should address that. however, if not known or untreatable, then you should seek care from a GI doctor for your GI complaints, cardiologist if you have any BP or heart rate manifestations, neuro for neuro symptoms, etc.

There is not much in the way of overall treatment...it's more supportive care based upon symptoms...from the appropriate specialist.

Some have found supplements help, but that may be for toxic causes or diabetic complications. It really all depends on the cause.

There are several tests that can determine if autonomic neuropathy/dysautonomia is present. Not all hospitals have full autonomic testing, but most can handle the basics (tilt table, GI empty studies, holter monitor, etc). QSART should be available in some teaching hospitals.