Stinging penis. This is an interesting one?

Ok... Here it is: I beat off alot. I went away for a week, and didnt beat off at all. when I got back, I went to do my buisness, but i noticed the skin on my shaft is all rough and dried up, and it hurt to masturbate. This is probably bad? I havent been sleeping around so its not like I have an std or something crazy like that. What is it and how can I fix it?