What is the cure for athletes foot?

Tinea pedis: Anti fungal cream with or without a steroid. This can take several weeks to treat. After careful drying of your feet after swimming or bathing followed by dry powder in your socks.

It could be...: Athlete's foot. The best otc medication (in my opinion) is lotrimin (clotrimazole) ultra. Dilute vinegar soaks are good as well. Dry the inside of your shoes by placing them up-side down over an air return vent at home overnight. If this doesn't make things better in a couple days, see a podiatrist.