I have had these for as long as I can remember and they go all the way around the shaft of my penis. I do not have any skin problems nor do I have tight foreskin (I am uncircumcised). I do not have acne on my face though I do have some zits. But the marks on me penis never hurt or scratch and now 5 have appeared on the head of my penis near the 'pee hole' an I am a bit concerned. Please help.