Itchy skin has allergies, parasitic infections, fungal infections and other causes, and can be treated with glucocorticoids, antihistamines, antibiotics and other drugs, which need to be analyzed specifically. 1. Allergy: If the contact dermatitis, urticaria, eczema, etc. caused by allergy can be applied locally glucocorticosteroid drugs, such as hydrocortisone butyrate, dexamethasone cream, but also calcium-modulated phosphatase inhibitors, such as tacrolimus ointment, pimecrolimus cream. Those with significant itching can also take oral antihistamines, such as cetirizine and loratadine. 2. Parasitic infections: including scabies, lice, etc. You can determine the cause of the disease according to the clinical manifestations, scabies, lice laboratory tests, etc., and give 10% sulfur ointment to kill parasites for the cause of the disease. 3. Fungal infections: you can apply antifungal drugs, such as ketoconazole, econazole, etc. You can also take oral antifungal drugs, such as terbinafine, itraconazole. When the symptoms of itchy skin appear, you need to go to the hospital in time, under the guidance of the doctor for standardized treatment. And need to pay attention to the above medication should be used under the guidance of a doctor, avoid self-medication.