The symptoms of inner thigh ringworm are red papules, papules, erythema, etc. on the skin of the inner thigh, accompanied by itching of the skin and other symptoms. Ringworm is mainly caused by the infection of bacteria such as Trichophyton rubrum, Trichophyton mustelii, Trichophyton verrucosum and so on, and it occurs in the inguinal area, and the lesions at the beginning appear as red papules, papules or small blisters, and then form scaly red patches, with clear boundaries, the edges are constantly expanding outward, and the center tends to subside, forming a clear ring or polycyclic ring with clear boundaries, and the edges often have pimples and so on. Some patients may have eczema-like changes, manifested by skin erythema, papules, vesicles, intense itching and other symptoms. General ringworm is not difficult to diagnose, it is recommended that patients if suspected of having ringworm, timely to the regular hospital dermatology consultation, follow the doctor’s instructions reasonable treatment, to avoid delaying the condition, usually pay attention to avoid scratching the skin, so as to avoid secondary infection.