In the last week I have experience weakness in my legs, /furst tunem geading dto frig, I felt a sensatio in my legs from my feet up to my knees of weakness, grabbed the table and sat and was awhile before I was able to stand again. 2nd time, I was on back patio putting trash in barrel, just made it into the mudroom before calapsing on floor, Today sitting at pc, same thing but was already sitting but had not the strength to stand up. My legs would not hold me. I'm most concerned what may be happening to me. My Doc. hasnot a clue. It feels like a sensation up to my knees but not a tingle. Please tell me if you have ever heard of these symptons. And should I be alarmed. I would hate for this to come over me, while crossing a street.