Itchy crotch is considered to have the following possibilities: the first may be pruritus, which can be treated by simply itching and a secondary rash like a small amount of scratching and crusting, and can be treated by taking oral levocetirizine hydrochloride capsules, one capsule every night, and topical application of glyburide lotion, 2 times/day. The second condition is fungal infection, which can appear as flaky erythematous patches with raised edges, covered with a small amount of scales and accompanied by itching, which can be tested for fungus. If the microscopic test is positive, topical terbinafine hydrochloride gel and naftifine ketoconazole ointment are needed. Oral itraconazole capsules, two capsules once a day, are given in a treatment cycle of about two weeks. The third case is eczema due to allergy, you can take oral lortadine hydrochloride tablets, one in the morning and one in the evening, together with compound glycopyrrolate tablets 3 times/day, 2 tablets/time, and topical fluticasone propionate ointment, just wipe once a day at night.