Hi Stags, If we are concerned about MSA and similar nasties, most of us see neurologists who specialize in those conditions. Once our doctors have ruled out the “regular stuff” (conditions they understand and routinely recognize), only then can we dig deeper into “invisible illnesses” including POTS and its related comorbidities (such as chronic fatigue). We now see patients at POTS Care (POTSCare.com) — set up because there are so few treating this condition by looking for underlying causes, rather than symptomatic treatment. The evaluation and treatment for these invisible illnesses can be a long journey, but please know that you are not alone, and that many of us have negotiated out way to the end. Big hug,