For over a year I have had a rash on groin/crease near vagina, that also effects the anus , i have been using lotrimin ultra and dilucan and allergy med and the rash looks like a bruise and its severly itchy,and burns after i do itch it and it painful along with a very itchy anus, also have one red blister on side, no sure if it has anything to do with it. i have seen a dermatologist but nothing has helped