text: raw skin on penis? i have kind of a raw skin / dark red mark on my shaft, it hurts when it rubs up against my underwear or what not, is it irritation? what can i do  to help this so it wont hurt? this could be symptoms of irritation, which could certainly be brought on or aggravated by sex. you should lubricate, minimize friction to the extent possible, and stop carefully examining or rubbing the affected areas. if you are worried, please show your penis to a doctor.