What causes you to get a penis blister if all your doing is masturbating. What is the best method of getting rid of it? It doesn't itch or hurt or anything. Some people said to go see a dermatologist. This is my first time having one I am not sexually active other then kissing. I had this thing called Molluscum i got it from a razor and I needed special cream to get it rid of it. It looks like it could be the same thing is this possible?