This is a bit embarrassing to discuss, but I have a purple rash or something on the very top of my butt crack. It tickles, hurts, and itches all at the same time. I constantly feel it, it s not like it goes away. I took a picture of it, and it looks just purple at the very top of the crack. I have no idea what it is, and I really have no money to go to the doctor. I just knew that was painful when I put my panties on.