I have a mysterious series of spots on my penis, Iv only been sexually active once and I had them before that, so i think it rules out an STD. The spots are raised white bumps, almost pimple like, surrounded by red. There are 3 clusters of about 5 small marks. They are right below the head of my penis. Theres no real irritation, exept one of the spots itches occasionally. The only thing i can think of is lack of lubrication when masturbating, because they are all place correspondingly with the angle from which I masturbate. Does anyone have any idea as to what it may be?