I had a horrible breakout along the inside and outside of my upper and lower lip as a child. i had a friend who always have cold sores, but my being young I never thought much of it so we would share chapstic and lip gloss. Now at 24, i have gotten a small painless (unless I scrap over it or press on it) bump on the outer part of my top lip. It hasn't blistered or doesn't burn. Scab or anything. It really reminds me of the breakout I had when I was younger. What could it be?