Athlete's foot is a skin disease caused by a fungus, usually occurring between the toes.

The fungus most commonly attacks the feet because shoes create a warm, dark, and humid environment which encourages fungus growth.

The warmth and dampness of areas around swimming pools, showers, and locker rooms, are also breeding grounds for fungi. Because the infection was common among athletes who used these facilities frequently, the term athlete's foot became popular.

Not all fungus conditions are athlete's foot. Other conditions, such as disturbances of the sweat mechanism, reaction to dyes or adhesives in shoes, eczema, and psoriasis, also may mimic athlete's foot.  

Symptoms

The signs of athlete's foot, singly or combined, are drying skin, itching scaling, inflammation, and blisters. Blisters often lead to cracking of the skin. When blisters break, small raw areas of tissue are exposed, causing pain and swelling. Itching and burning may increase as the infection spreads.

Athlete's foot may spread to the soles of the feet and to the toenails. It can be spread to other parts of the body, notably the groin and underarms, by those who scratch the infection and then touch themselves elsewhere.

The organisms causing athlete's foot may persist for long periods. Consequently, the infection may be spread by contaminated bed sheets or clothing to other parts of the body.  

Treatment

Fungicidal and fungistatic chemicals, used for athlete's foot treatment, frequently fail to contact the fungi in the horny layers of the skin. Topical or oral antifungal drugs are prescribed with growing frequency.

In mild cases of the infection it is important to keep the feet dry by dusting foot powder in shoes and hose. The feet should be bathed frequently and all areas around the toes dried thoroughly.  

Consult Your Podiatrist

If an apparent fungus condition does not respond to proper foot hygiene and self care, and there is no improvement within two weeks, consult your podiatrist. The podiatrist will determine if a fungus is the cause of the problem. If it is, a specific treatment plan, including the prescription of antifungal medication, applied topically or taken by mouth, will usually be suggested. Such a treatment appears to provide better resolution of the problem, when the patient observes the course of treatment prescribed by the podiatrist; if it's shortened, failure of the treatment is common.

If the infection is caused by bacteria, antibiotics, such as penicillin, that are effective against a broad spectrum of bacteria may be prescribed.

This pamphlet is one of a series produced by APMA that discusses several foot health conditions and concerns, including foot health, diabetes, high blood pressure, athlete´s foot, occupational foot health, warts, foot orthoses, aging, children´s feet, surgery, Medicare coverage, injuries, heel pain, nail problems, walking, women´s feet, footwear, and others. The pamphlets are available from many podiatrist members of APMA.