What is athlete's foot? How can it be treated?

A fungal infection. Of the skin. The fungus is an environmental germ and can be contracted in many different ways. Typical treatment is with a topical antifungal cream. You should also take measures to keep the feet dry, particularly between toes. There are alos ways to attempt to limit your exposure to the fungus, such as changing shoes daily, uv shoe trees which can kill fungus in the shoes and more...
Fungal infection. There are many over the counter preparations to use in conjunction with good hygeine.