I have had a rash on the outer parts of my vaginal area for two months. At first it seemed like any old ordinary yeast infection so I called my gynecologist and he called out a prescription for it. It seemed to get better, but now it is very dry, thick, scaly, and itchy around the vaginal area. It is worse in the creases between my legs and vagina area. I have tried several over the counter vaginal creams. It will seeminly get better and then worsens again. What could it possibly be?