I have had a rash under my left underarm for approx 4 weeks. I changed deodorant in case I was allergice and have been using baby powder only for about a week (still there). It looks like razor burn (no white tops though). My inner thighs have also been itching horribly. No rash there though although it is raw and irritated where my underwear rubs. Today I have at the top have of my buttocks near the crack. It is red, not raised and looks like carpet burn. It hurts/burns. I have a place that looks like it under my right arm, but it does not hurt. I don't know why I have started having all these skin problems. I don't know if it is just were my skin rubs together or if it is a fungus. Any suggestions?