used to treat tinea corporis (ringworm; fungal skin infection that causes a red scaly rash on different parts of the body), tinea cruris (jock itch; fungal infection of the skin in the groin or buttocks), and tinea pedis (athlete's foot; fungal infection of the skin on the feet and between the toes). Clotrimazole is in a class of antifungal medications called imidazoles. It works by stopping the growth of fungi that cause infection.