Hello Doctor. I've Been Masturbating Since I Was 15, And

Hello Doctor. I've been masturbating since I was 15, and I have never truly had any problem with it (or so I thought). I have been developing small cuts on my penis from masturbating and these cuts often persist. They went away after switching to a different lotion for a while, but said lotion must've been mixed with something from a family member because when I tried to buy another bottle of it, it didn't have the same slickness. My penis has become discolored due to the masturbation (I'm african american, yet I have areas on my penis that're now white) and when I masturbate, cute reopen and severely itch hours later. I can't keep doing this to my body. Please help!