I have yet to be diagnosed as waiting for tilt table test. My GP said my symptoms sounds like lots, also a cardiologist and neurologist. But here in UK long waiting times to have these test! I get these if I'm on my feet too long, I can't even speak properly when this happens, my speech is slurred it's so scary. I just couldn't find this as a common problem with pots online. The stairs are my worse enemy, if I climb too many stairs a siezure will come.