I am a 30 year old female. 190 pounds. My left under arm has been itching and rash that looks like razor burn for about 3 weeks. I have changed deodorant in case I was allergic and have recently just been using baby powder. It is still there, no white tops. Also my inner thighs have been itching, but no rash just a few bumps (Thought it might be heat). Today the top part of the crack of my buttocks has a red spot that looks like carpet burn approx 1 1/2 inch long and 1/2 inch wide. It hurts/burns. I also have developed a spot that looks the same on my right arm pit. It does not hurt though. Any thoughts or suggestions?