You should see a doctor before you do anything and ask their opinion. Or try a free clinic. It might be eczema or psoriasis. Or god for bid an STD. Depends on what it looks like and has it spread from one part of your body to the next. If it was kinda red with yellow or white loose skin (scalely) on top it's probably psoriasis. Sometimes itches. I had it. It starts like a spot (pin head size) like scab or ruff skin then gets bigger. Usually speads if you scratch at it. (Speads to the next thing you scratch with your hand or the spot could just get bigger). If after the doctor says its psoriasis, go to Wal-mart and get the over the counter Psoriasin Gel (topical gel). It worked for me and now it's completely gone. But please read all directions and warnings fully. You may not be able to use it on your man-hood. Please go to a doctor first before you do anything. You don't want to try and treat the wrong thing.