Hi, thanks for using healthcare magic There are different potential causes from groin rashes. They are: fungal infection, chemical reaction to creams/detergents/soaps, erythrasma, eczema, psoriasis. Based on what you have been using it is likely that your doctor believed that it is related to a fungal infection. In addition to what you are doing, you need to avoid tight clothing and use only loose fitting clothes, try to keep cool- heat and moisture make the rash worse. It can take a long time for a fungal rash to resolve,if you continue to notice no improvement then your doctor may consider switching medication. I hope this helps