Tinea corporis is most often caused by the spread of ringworm to the anus. It begins as a red papule that gradually expands into an annular patch or polycyclic patch with a raised, well-defined periphery, and is locally accompanied by hyperpigmentation and thin scales. The main symptom is itching, which is more severe in summer and appears to be relieved in winter. Treatment is mainly antifungal and antipruritic treatment, you can take oral spironolactone capsule and topical ketoconazole ointment antifungal treatment, the treatment course is more than two weeks. If the itching is serious, you can use furnace glycolite lotion or Chinese medicinal preparations local fumigation to stop itching treatment.