Eczema (eczema) is a common inflammatory skin disease of the epidermis and superficial dermis caused by a variety of internal and external factors, and is generally considered to be related to metaplasia. Its clinical manifestations are characterized by symmetry, exudation, pruritic dermatosis, polymorphism, and recurrence. Eczema is a skin disease that is prone to recurrence and treatment requires recurrence-specific medications, such as those containing the ingredients of Kangen Skin, and is also an allergic inflammatory skin disease characterized by a diverse rash, symmetrical distribution, recurrent episodes of intense itching, and a tendency to become chronic. It can occur at any age, in any part of the body, and in any season, but often recurs or worsens in winter with a tendency to exude, and has a chronic course that is prone to recurrence. In Chinese medical literature, there are similar cases of “dip sores”, “whirling ear sores”, “hydrangea wind”, “four curved wind”, and “milk sores”. “The eczema is similar to acute eczema, peri-auricular eczema, scrotal eczema, atopic dermatitis, and infantile eczema in Western medicine. Eczema is a common allergic inflammatory skin disease, characterized by a diversity of rashes, symmetrical distribution, intense itching, recurrent episodes, easy to become chronic, can occur at any age, any part, any season, but often relapses or intensifies after the winter, in recent years the incidence of eczema is on the rise, which may be related to climate and environmental changes, the application of a large number of chemicals in life, mental tension, the pace of life Eczema is caused by a variety of internal and external factors of skin inflammation, according to the different symptoms of the eczema site can be divided into calf eczema, scrotal eczema, breast eczema, hand eczema, etc.. The classification of eczema 1, acute eczema: conscious intense itching, lesions polymorphic, erythema, papules, papules or blisters dense patches, easy to exude, unclear edges, scattered around the small papules, papules, often accompanied by vesicles, scars, such as secondary infection, can appear pustules or thick crust. Properly handled, the inflammation is reduced and the lesions can subside after 2 to 3 weeks, but often recurring and can turn into subacute or chronic eczema. 2, subacute eczema: acute eczema inflammation is reduced, there is still intense itching, lesions to papules, crusts and scales mainly, a small number of papules can be seen, mild vesicles. Improperly handled, it can be an acute attack or turn into chronic eczema. 3, chronic eczema: often due to acute, subacute eczema repeated episodes do not heal and turn into chronic eczema; can also start not obvious, due to frequent scratching, friction or other stimuli, so that the onset of the beginning of chronic eczema. The manifestation of the affected skin infiltration hypertrophy, rough surface, dark red or with pigmentation, lesions are mostly limited plaques, commonly in the hands and feet, calves, elbow folds, breasts, vulva, anus, etc., clear edges. The course of the disease is chronic and can last for months or years, or can be acute due to irritation.