Cherie's post was insightful...and correct but not necessarily for all....I too have have had this happen and it doesn't last for weeks at a time..I have had it happen for only short periods of time we're talking minutes here, as well,scared the crap out of me the first time....I had been feeling kind of cruddy numb spots here and there some tingling when all of a sudden I was totally unaware of the entire right side of my body,it was as if I had gone completely paralyzed, I have since had this happen on multiple occasions somtimes just an arm or a leg but it usually goes away fairly quickly, I thought I was having mini strokes! I DID however go to my neuro young lady! Alas in the end it was only the MonSter but you should always be sure!