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Athlete's foot is an itchy infection of the foot, caused by a fungus called Tinea pedis. The fungus that causes athlete's foot is similar to the fungi that cause ringworm and jock itch. You don't have to be an athlete to get athlete's foot: Anyone who has sweaty or damp feet can get it. The fungus survives in warm, moist areas, and feet are the perfect place for it to thrive. It often likes to grow between the toes, and causes a rash there. The rash makes your feet itch, burn and peel.
Prevention
You can help prevent these fungi from moving in by drying your feet thoroughly after showering, bathing or swimming. Take a few extra seconds to dry in between your toes. If you shower in gym class or at a community pool, it's a good idea to wear flip-flops, since athlete's foot may be transmitted from one person to another via shower floors.
Polyester socks tend to encourage athlete's foot. Those made from cotton or wool will keep the fungus away more effectively, because natural fibers tend to wick moisture away from the feet, keeping them more dry. Likewise, sneakers with small ventilation holes on them allow air to circulate around your feet. To win the fight against athlete's foot, keep your feet as clean and dry as possible.
Treatment
Several over-the-counter treatments are available to treat this fungus. They are sold as sprays, powders and creams. Some brands state they work within days; others may claim several weeks. Be sure to read the labels to get the product that best meets your needs.
In some cases, if home treatment fails or your athlete's foot is persistent or severe, your health-care provider may prescribe a prescription strength topical medication, such as clotrimazole or miconazole, or an oral medication. She may also prescribe an antibiotic if a secondary bacterial infection has set in. An antibiotic, however, will not treat the fungus itself.
