Okay, so one day while I was shaving my pubs, I noticed that there was what appeared to be a scar in between my pelvis and thigh, I pushed it aside just thinking it would heal on its own, the weeks went by and it got about twice as big and when I rubbed on it it felt kinda hard and like there was crusted over with hard dead skin. About a week later I noticed it appear on the left side in the same place. At that point I thought about my masturbation habits, and I masturbate with a anti dandruff shampoo. And thought that was the problem. so I stopped masturbating with that and instead changed to lotion. The 2 patches of skin were shiny smooth, but still crusted up and itched on occasion. I did shave again, and noticed circle like shapes, of similar rash, but now on the part of my scrotum on both the left and right side that were much pitcher than the others. It wasn t to much later when masturbating began caused a painful burning sensation on my penis. It had become very red and shed skin very easily. Now, it has started to act like the original rash. And the 2 on my scrotum have grown and spread. What is this? I am circumcised and have never had sex and am 13 years of age.