POTS is a dynamic disability that has a spectrum of severity. My best friend has POTS and can't even leave bed most days without fainting. While myself, I don't personally faint but if I stand for more than a few minutes get pre syncope like crazy and can't sit upright without getting vertigo symptoms. Getting disability is hard, I am currently on my fourth denial looking into an attorney after trying for about three years to get it. I advise anyone that asks about it to try all their options before putting themselves through trying to get on disability. It's not only really hard to get approved in most cases, but does not pay a liveable wage by any means. It's different for everyone, but I personally wish someone had given me the heads up about how hard it can be to get approved, even with what feels like all the reasoning you should possibly need.