I don't have a lot of info on POTS. * * info from YouTube to help others share. * * there is a Channel 7 report where a Chicago Peds doctor is referenced and Dr. Blair Grubb is referenced. This illness seems to be brought on - or brought to light - by an illness such as the flu. That is to say it is usually there, but not a problem until an illness short circuits the system. It is my understanding that the Mayo Clinic is good for diagnosis and treatment. This is from a doctor who has POTS and has recovered enough she can work 2 - 3 days a week. Good luck and take care!