I'm 25 years old man and I do masturbate 3-4 times in a week. Few days ago I noticed the skin adjecent to the scrotum on the downside of my penis is getting thinner and becomes red after each time I masturbate. The skin is even peeling off if I rub it slowly that's why I'm very much worried about it and I should be grateful if you provide some help. Furthermore, I'm not sexually active person.