I am 62 year old female. I have these weird intermittent "spells" for lack of a better description. I will suddenly feel faint, tingling, numbing in lower extremities. I feel like I will pass out if I don't sit down. I literally feel limp. My legs feel like jelly temporarily. But it last only a minute or two and everything is normal. I have no blood pressure problems. I feel this may be a warning to something. this may only occur once every two-three months.