There's no cure or anything, just a handful of treatments for the symptoms and to keep things under control. For the heart rate issues I take Xanax periodically as needed - it keeps anxiety from building up and setting off my heart rate (which then feeds the anxiety in a vicious circle).

The autonomic problems also cause periodic drops in blood pressure so I take a medication for that, but also have weird treatments for it like a high-salt diet and compression stockings I wear very day. I also take an ADD med for the cognitive impairment that comes along with drops in blood pressure.

I also have major on-going fatigue and gastrointestinal issues related to the autonomic problems (turns out your autonomic nervous system runs EVERYthing), and I'm about to be tested for food sensitivities to see if changing my diet might help those.