About a week ago I noticed a little red dot on the head of my penis, which I thought nothing of. It didn't hurt or itch at all. Since then, more dots and bumps have appeared, turning into an itchy red rash on the head of my penis. Reading about similar problems online, I have stopped masterbating and starting using 'sensitive skin' soap to wash my penis, but the rash hasn't gone away. The bumps are numerous, blood red and about 1mm in diameter. I am 16 and sexually active, though I've not had unprotected sex. Thanks