I never have looked at my butt and certainly not in the crack but recently I had a round rash on my lower back and looked in detail at my whole back side I was shocked to find maybe 30 small to medium pimples "hiding" in my butt crack. I am a clean person and the rest of my skin has been mostly flawless all my life. I run in hot and humid conditions for an hour a day and only shower at night before bed and in the morning. Does anyone know what this could be and what treatments are available? I am now showering right after running and it appears the pimples are slightly fading after a couple of days.