Athlete’s foot is a highly contagious fungus that typically spreads on damp locker room floors and shower stalls. Sometimes there is no rash — but rather, a peeling and flaking of the skin beneath the toes. Other times, the fungus causes the foot to turn beet red and a full-scale rash erupts. Either way, the symptoms of athlete’s foot are uncomfortable and itchy. As the infection progresses, painful blisters may erupt and the infection can spread to other parts of the body.