Drug treatment of allergic dermatitis: firstly, olopatadine hydrochloride tablets, ebastine tablets and compound glycyrrhizin tablets can be taken orally; Secondly, the desonide cream and tacrolimus ointment are mixed for external use in the morning and evening; If the patient is still not relieved after the above treatment, methylprednisolone tablets can be taken orally, but under the guidance of a doctor; If the patient has severe itching and insomnia at night, mizolastine tablets and cyproheptadine hydrochloride tablets can be taken orally, and calcium chewable tablets, vitamin C tablets and calamine lotion can also be used externally. Spicy food and alcohol are forbidden.