There are many treatment options and skin care recipes for treating jock itch. Since the two primary causes of jock itch are excess moisture and fungal infections, treatment depends on the exact cause of the jock itch. Treatment of jock itch associated with skin irritation and excess moisture should address general measures to keep the groin clean and dry along with the use of zinc oxide ointment. Treatment of fungal jock itch should include antifungal creams used continuously for two to four weeks. Clotrimazole cream is an effective treatment for both dermatophyte molds and Candida (yeast) and can be purchased without a prescription.
i don't know about diaper rash... but I would ask Dr about having a steroid in the medication in any case. In fact, the reason I looked up this particular combination of drugs is that my doctor gave me the combo Nystatin instead of plain Nystatin. I am now calling her office to complain and ask for a new script for plain Nystatin because it was done without consulting me when I asked for prescription renewal. I use Nystatin by itself -- no additive/added drug to control yeast infection which comes from the rectum when I have eaten foods that upset the balance of "good organisms/bad organisms". If your digestive tract is unbalanced (a lot of flatuance is a clue), that alone can contribute to vaginal yeast infection -- or possibly diaper rash (I have no experience with a baby needing more than cornstarch or "butt paste" to control diaper rash -- which works fine on the worst case my grandson had).