Tinea corporis is a fungal infection that occurs on the surface of the body, excluding the scalp, hair, nails, toenails, and palmoplantar areas. It includes both limited and generalized. Tinea corporis typically presents as a well-defined, centrally fading annular or polycyclic erythematous rash that gradually spreads outward in a circle with papules or small blisters at the edges, without or with varying degrees of pruritus. Because the ring-shaped characteristic cause of the ringworm rash is the engulfment of the central skin keratin-like material by the fungus, the disease has a long duration, often more than two months. Among these, limited refers to infections that are confined to certain areas, such as ringworm; generalized refers to the type with a larger area of infection. For limited, topical antifungal medications, such as ketoconazole cream and terbinafine spray, can be used once a day for 2-4 weeks; for generalized, oral antifungal medications, such as itraconazole capsules, need to be combined with topical applications and taken as prescribed by the doctor, and liver function is strictly tested during the medication period. Tinea corporis is a fungal infection and is somewhat contagious. During treatment, attention should be paid to scalding, exposure to the sun, disinfection of intimate clothing and household items, and isolation of patients, especially the elderly and people with diabetes who are immunocompromised.