Treatment Eczema has a complex etiology and is prone to recurrence even after treatment has improved, making it difficult to cure. The clinical form and site have their own characteristics, so the medication varies from person to person. 1, the general principles of prevention and treatment to find possible causes, such as work environment, habits, diet, hobbies, thoughts and emotions, as well as the presence of chronic lesions and visceral organ diseases. 2, internal therapy Select antihistamines to stop the itching, if necessary, two with or alternate use. Generalized eczema can be oral or injectable glucocorticoids, but should not be used for a long time. 3, topical therapy According to the lesion situation choose the appropriate form and drug. Acute eczema local saline, 3% boric acid or 1: 2000 ~ 1: 10,000 potassium permanganate solution rinse, wet compress, furnace glycerine lotion astringent, protection. Subacute, chronic eczema application of appropriate glucocorticoid cream, tar preparations or immunomodulators, such as tacrolimus ointment, pimecrolimus ointment. Add antibiotic preparations for secondary infections. Prevention 1. Avoid possible triggering factors by yourself. 2. Avoid all kinds of external stimuli, such as hot water, excessive scratching, washing and contact with potentially sensitive substances such as skin and fur preparations. Less contact with chemical products, such as soap, washing powder, detergent, etc. 3.Avoid foods that may cause allergy and irritation, such as chili, strong tea, coffee, alcohol. 4.Use medication under the guidance of a professional physician, do not use medication indiscriminately.