I see the neuroendocrinologist for my autonomic neuropathy issues. He was the one that actually diagnosed me after numerous testing. I did the cannes test (sp?) where you hold your breathe, breathe normal, and also tests valsava maneuver. He also does neurological tests (ex: can you feel this, and strengths), and blood pressure/pulse lying down, sitting, and standing. He is the only one that is helpful for the autonomic neuropathy but it seems he spends more time on research then actual solutions. He also takes blood and I dont know what tests he runs on it but he seems to think my autonomic neuropathy is not auto immune but caused by a virus cause of its sudden onset. I would say to see a neuro-endocrinologist if you think it would be helpful because I dont know what other doctors you go to for this unless you're by mayo or vanderbuilt. In the beginning, he also tested me for heavy metal poisoning, neurofibromatosis, adrenal tumors, etc... so I would say they are good at ruling stuff out.