Hi, I came across this study: http://jaha.ahajournals.org/content/3/1/e000755 and wanted to see if anyone has been diagnosed with a viral or bacteria infection that was the underlying cause of their POTS? Honestly, I understand if someone has mechanical issues with their heart that is causing Tachycardia, but if the heart is fine (verified on EKG and Holt and other tests) and they also have food allergies or severe seasonal allergies (or both) I would think the next logical step would be to look into some kind of immune problem.... Does anyone know of any viruses or bacteria that once treated could help improve the symptom of POTS? I remember I read something a while back about EBV being one virus that even in dormant state could effect the heart but I can't find it now. Any information is appreciated.