I had a horse camp last week, and it was very hot and I was in a saddle for hours on end. I got in the shower and a spot on my butt began burning. I looked at it, and it s a quite large, flat, red area. Liquid seems to come out of it. I ve cleaned it a few times but no change. More smaller bumps sort of like acne are popping up around it. It is itchy and hurts. It s large too, as big as a quarter or bigger. At first I thought maybe the saddle I was in was rubbing me the wrong way, but I ve been out of horse camp for a few days and it hasn t gotten any better. Any ideas?