Herpes Simplex
"I get cold sores when I go in excessive sun at least once a year. I could see that the sore was coming this time around, so I grabbed some abreva. Not only did it seem to be of little affect, but it made my blister grow more than I have seen it without treating it with anything. The Abreva takes the pain away, but as for the blistering, it only makes it larger."