The left half of my penis, from the bottom of the head to the base of the shaft has a red itchy rash on it. Normally it is just red, but when I shower it gets a little puffy and itches like hell. Also, if I touch even to pee it itches really bad. I have tried anti fungal and that made it worse. I have trie cortizone creme and that didn't help either. It doesn't burn or anything, just itches really bad. What could it be?