herpes simplex
"I've been getting cold sores once or twice a year for the past 20 years and they've always been the same size, so I know my personal cold sores. I felt the signs of getting a cold sore so having heard abreva actually worked I thought I'd give it a shot. At this point the cold sore was a tiny bump no bigger than a pinhead. After trying the pump bottle, my cold sore got a little bigger but I didn't think anything of it at first other than that I must not have caught it in time so that's why it grew more and I kept using abreva. THIS WAS A TERRIBLE THING TO TRY. This cold sore is now the biggest I have ever had in my life, has spread to HALF of my upper lip, and it is so swollen and painful! This is because of abreva  DO NOT USE!"