Q. You have written about treating under-breast rash. I use Lotrimin with miconazole for this. When I first experienced the rash, my doctor prescribed a powder with miconazole. The prescription was a very small amount of powder, and the co-pay was not cheap.

One day, while in the drugstore, I walked past the section where the athlete’s foot items were. I noticed that Lotrimin AF Athlete’s Foot Powder Spray contains miconazole. All I can say is, it works for me.

A. Many under-breast rashes are caused by yeast infections that respond well to an antifungal drug such as miconazole. These are the same agents that are effective against athlete’s foot.

There are several Lotrimin products. Some contain other antifungal ingredients, including butenafine, clotrimazole or tolnaftate. Keeping the a

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