Atopic dermatitis is a special type of eczema, also known as atopic dermatitis, atopic eczema, allergic eczema, atopic dermatitis; it is also called hereditary atopic eczema because it is related to hereditary qualities, and in Chinese medicine, it is called four-bend wind. The disease is mostly found in infants and adolescents with allergic constitution. The rash manifests itself like eczema, with symptoms such as red rash, erythema, oozing, vesicles, crusting, skin hypertrophy and roughness. The lesions are more symmetrical across the face, neck, elbows, popliteal fossa, and dorsal side of the limbs. Inflammation can range from acute to chronic, with recurrent episodes of severe pruritus. These patients have many common features: dry skin, ichthyosis, excessive palmar lines, and peripapillary keratosis; a personal history of asthma, rhinitis, or chytridiomycosis in the family, and most patients have significantly increased serum IgE and peripheral blood eosinophilia. Since many people start to develop the disease in infancy, it has been divided into three phases: the infantile phase for those within 2 years of age, with lesions often involving the face, top, trunk, and extremities, starting in the second or third month after birth, with an exudative and dry rash, both with intense itching; the childhood phase for those between 2 and 12 years of age, with most developing before the age of five; the adult phase for those over 12 years of age, with lesions in the latter two phases often involving the extremities The latter two stages often involve the extensor or flexor sides of the extremities, and are more likely to occur in the elbow and popliteal fossae. The lesions are divided into eczema type and itchy rash type. Of course, atopic dermatitis is also present only in the adult phase due to industrial pollution. History of pruritus, plus 3 or more of the following: 1. History of flexural skin involvement, including elbow fossa, rouge fossa, anterior ankle or peri-neck area (including cheeks in children under 10 years of age); 2. Personal history of asthma or allergic rhinitis (or history of AD in a first-degree relative under 4 years of age); 3. History of generalized dry skin; 4. Eczema; 5. Onset before the age of 2 years (for those older than 4 years). The current status of treatment: mild cases can be treated externally: 1, topical glucocorticoids is the main drug to control the condition and relieve symptoms, with skin care drugs, can be selected according to age and lesion condition; 2, in recent years, topical calcium phosphatase inhibitors (such as tacrolimus and pimecrolimus ointment) have also achieved better results, but it is still necessary to slowly withdraw down and switch to skin care oils or medical petroleum jelly for long-term application; 3, at least daily application of emollients all over the body (such as tacrolimus and pimecrolimus ointment). The skin should be treated with emollients and/or moisturizers at least 2 times a day, especially immediately after bathing, to maintain the hydrated state of the skin and reduce itching symptoms. In severe cases, systemic medication is required: oral antihistamines, anti-infection therapy for co-infection, high-dose intravenous immunoglobulin, etc. Systemic infrared phototherapy can also be used to suppress inflammatory itching, but it should be used with caution under 12 years of age. The cause of atopic dermatitis is not well understood by modern medicine. It is mainly based on purely external solutions, which cannot address the essential causes of dermatitis and allergens, and long-term topical steroid (hormone) products and antihistamine orally based, which can produce toxic side effects and are prone to rebound and recurrence after stopping the medication. Traditional Chinese medicine believes that the occurrence of the disease is generally due to congenital endowment deficiency, eating five pungent hair, heat in the fetus; or acquired dietary disorders, resulting in weakness of the spleen and stomach, wet from within, external exposure to wind, moisture, heat, depressed in the skin coup and the cost of the disease. The cause of the disease is due to the internal cause, not other than dampness, heat, wind three. The treatment is to strengthen the spleen and dampness, clear heat and dispel wind to relieve itching. Through long-term conditioning, promote the body’s self-repair.