I m a slightly overweight male, aged 28, I ve been working outdoors in the heat for a few weeks now, and during the course of this work I managed to spit the skin vertically near the very top of where my butt cheeks meet. Over the course of a few days the small area of redness has spread, and I now have what appears to be a rash surrounding the area, along with bumps. It is becoming painful, and I suspect the fact that I spend all day sweating has something to do with it. Any help would be greatly appreciated.