Tinea corporis (colloquially called ringworm) is the term for infection of the trunk, legs or arms with a dermatophyte fungus (tinea). Infection often comes originally from the feet (tinea pedis) or nails (tinea unguium). Also common are Microsporum canis (M. canis) from cats and dogs, and T. verrucosum, from farm cattle.
Ringworm refers to round or oval red scaly patches, often less red and scaly in the middle or healed in the middle. Sometimes one ring arises inside another older ring.
Tinea corporis is usually treated with antifungal creams. If the treatment is unsuccessful, oral antifungal medicines may be considered.