I just woke up with a slightly swollen left upper lip, and the reason I woke up, was because of a horrible burning sensation on my skin. No marks. No scratches. No bites. It's really quite scaring me! It's not doing it anymore, but I can't help but think my lip is getting bigger...WHAT DOES THIS MEAN? I've been reading other articles that are talking how these could be symptoms of fatal diseases! It's 2:35 in the morning! HELP ME PLEASE!!!