POTS, CFS, Adrenal Fatigue. ME, Fibromyallgia, Anxiety, Dysautonomnia, Sympathetic Dominance, Orthostatic Intolerance, Multiple Chemical Sensitivities, etc. All of these are basically the same thing. I mean look at how the symptoms overlap! Honestly, I think scientists should study the brains of the these patients. Something psychologically is happening that is identical in all cases. The body goes into shut-down/survival mode, and it's nothing more really. We must keep it simple.