Fungal infections of the skin are very common and include athlete's foot, jock itch, ringworm, and yeast infections. Athlete's Foot Athlete's foot, also called tinea pedis, is a fungal infection of the foot. It causes peeling, redness, itching, burning, and sometimes blisters and sores. Athlete's foot is a very common infection. The fungus grows best in a warm, moist environment such as shoes, socks, swimming pools, locker rooms