For the past few months or so, I have noticed that the skin on my penis shaft, underneath the head, but above the circumcision line where the foreskin was, has begun to peel and become painful and red. I only notice this when I go to ejaculate and become erect. I have tried putting lotion on it when I'm flaccid, however nothing seems to work. I do not ejaculate often, about once or twice every 2 weeks, but the problem remains. I haven't had sexual intercourse in about a year, so that should not be the problem. I have thought that it might be the constrictive underwear that I wear, but there really isn't much if any chafing going on. I'm deeply concerned that this might go on for a long time and develop into a serious issue. Any suggestions? (I know for a fact this is not an STD)