There are many causes of crotch itching such as eczema, tinea corporis, etc. The causes are different, the treatment methods and medications are different, you need to use medication under the guidance of a doctor, you should avoid self-medication to prevent delays in the condition. 1. Eczema: Eczema is usually a kind of skin sensitivity caused by perversion reaction, not only need to control the itching symptoms, but also need to target the cause of the treatment. You can follow the doctor’s instructions to use oral loratadine, cetirizine and other antihistamines to control the itching symptoms, local use of boric acid solution, potassium permanganate solution to the role of sterilization and anti-inflammatory. If necessary, glucocorticoid ointment such as dexamethasone cream can also be used for local application. 2. ringworm: ringworm is a kind of fungal infection that occurs in the superficial part of the skin, you can use ketoconazole, miconazole, amorolfine and other antifungal drugs to inhibit the fungus, but also oral paracetamol and other drugs to control the itching symptoms. If necessary, oral itraconazole, terbinafine and other drugs to shorten the course of treatment. If the symptoms of crotch itching may also be related to psoriasis, mosquito bites, various dermatitis and other diseases, it is recommended to consult a doctor in a timely manner, to clarify the cause of the disease, and under the guidance of a professional physician, choose the appropriate treatment.