If allergic dermatitis recurs, intervention should be carried out through the following programs: a. Find the cause of allergic dermatitis, if it is due to a disruption of the body’s immunity caused by prolonged rest and poor sleep, you need to adjust your work and rest schedule, ensure good rest and sleep, and ensure a happy mood. If it is caused by ultraviolet radiation, you should apply warm, non-irritating sunscreen and reduce the time of outdoor activities. If it is caused by the consumption of spicy and irritating food, avoid eating raw onion, raw garlic and other irritating foods. Second, in terms of treatment, you need to take oral Epinastine hydrochloride capsules and use topical glucocorticoid ointment or tacrolimus ointment to avoid recurrent allergic dermatitis that does not heal for a long time.