I Have A Rash In The Crease Of My Leg

I have a rash in the crease of my leg and groin area. I also have another spot in the pubus area about the size of a quarter. Both rashes started out very red. I tried some ointment I use for atheletes feet but it hasn't worked. I also have been applying rubbing alcohol to the areas and then use baby power to try to dry. It has helped some but when the area is washed, it is still very red. I have had the rashes about 3 weeks. Neither are burns or itch.