I have Autonomic Neuropathy from toes to throat, it started in my feet and spread up. Its effect on my heart/liver/bowel/BP and bladder have been the hardest to bare. I get wide-spread burning and deep nerve pain. The worst sensation is the tight corset feeling around my middle. Nerve damage doesn't have to be permanent, as the condition which is causing this problem, if controlled and treated can bring about nerve repair. I've probably had it for years but the past 4 have been the most dramatic. Keeping calm and taking a cocktail of nerve protectors like alpha-lipoic acid and vitamin B's have helped. Acetyl-L Carnitine is very good, too, as well as magnesium and calcium. Peripheral neuropathy is linked to many conditions such as diabetes, but some an be linked to POTS, just like it is to ME/CFS. Meditation helps and knowing your limits is vital. I'm on Gabapentin and Nortriptyline to block nerve pain.