Autonomic, Cardiovascular, and Respiratory

This is the place to discuss autonomic symptoms such as Orthostatic Intolerance (OI), Neurally-Mediated Hypotension (NMH), Postural Orthostatic Tachycardia Syndrome (POTS), and difficulty regulating body temperature. You can also discuss any issues related to the heart, circulation (e.g. poor blood flow, low blood volume), and respiration (e.g. air hunger, difficulty breathing).