Several years ago, I was hanging out with some friends, and started feeling a numbness on my forehead, it radiated outwards, as I tried to tell the friends what was going on, I couldn't form words, I got up and could hardly walk, worked my way to the friend's mother, she told me to take either an aspirin or a tylenol, I forget which, and to lay down, I woke up a few hours later and could move and talk correctly again, but believe i've noticed some problems since. Could someone tell me what happened exactly?