sorry i wasn't specific enough. u asked for it. paralyis in my toes,meaning i could not make them movein any direction if i wanted to. i can feel them,ie if u touched me i would know but i can't move. there is also swelling(non-pitting edema) when this occurs all the way up my left leg. left sided mainly. sometimes it happens on the right side but not as often. left side arm doesthe same thing( swelling, paralysis) it draws up to my chest at the elbow and i cant move it or my fingers. i have had every test i know of and the comments r always unremarkable.docotrguest will understand that lingo. ECG showed something but they couldn't explain it to me or themselves. that was the answer i got. i have POTS,OI,NCS. and now thinking fibromyalgia. my dys doc is specialist and feels some of it (paralysis, swelling) may go away. but hasn't yet. potasium seems fine on all tests, but they have told me it is a hard thing to catch at the times it goes low. and yes the weakness is there. sometimes i am paralized(as described above) all the way to the top of my knee. my whole left side has lost muscle mass and been getting weaker and weaker over the last 9yrs. i wasn't diagnosed with dysautonomis until may. but the paralysis and swelling began ot onsetof probs 9yrs ago. was when i knew something was wrong, but noone could tell me why and really still can't. if u need more than this please feel free to ask specifics. and thanks for helping me. and yes it comes and goes.