What causes athlete's foot?

The fungi can live on floors around swimming pools, changing rooms, gyms and shared showers. Walking barefoot on a contaminated surface can transfer them to the feet. Tight shoes, sweaty socks and skin that stays moist create conditions in which the fungus can multiply. Small cracks, softened skin or scratching can make entry easier. The infection may cause itching, burning, peeling, scaling or painful splits. It can also spread from one foot to the other or to the hands and nails.

Wash your feet regularly and dry carefully between every toe. Change socks when they become damp, choose breathable footwear, and allow shoes to dry before wearing them again. Wear sandals in communal wet areas and avoid sharing towels, socks or shoes. Pharmacy antifungal treatment may help when used exactly as directed; stopping too soon can allow the infection to return. Keep applying good foot hygiene after the skin looks better, and avoid scratching irritated areas.

Arrange a medical assessment if the rash is spreading, very painful, cracked, oozing or not improving with appropriate self-care. Prompt advice is especially useful if you have diabetes, reduced circulation, reduced sensation or a weakened immune system, because a foot infection may need closer monitoring. A clinician can check whether the problem is fungal or another condition such as dermatitis and can recommend treatment for persistent infection.

Ask whether the appearance fits athlete's foot, how long treatment should continue, and whether your shoes or toenails need attention. You can also ask how to reduce moisture and what to do if itching or peeling continues after treatment.