I have a small piece of my upper lip in the exact center that is numb and keeps cracking/peeling. I thought it was a cold sore at first but it isn t like any cold sore I ve had before. There is also now a spot on my lower lip, off to the side, that the skin keeps peeling off of. The bottom spot is not numb, just the top spot. I ve tried lip balms, cold sore treatments, neosporin and nothing seems to be helping. What could it be?