Atopic dermatitis is a chronic relapsing inflammatory disease characterized by papules, itching and dry skin. Atopic dermatitis occurs on the hands, feet, trunk and elbows, etc. Localized skin may appear erythema, pimples and other symptoms, often in patches, and in the long term will form mossy lesions, often accompanied by intense itching. In addition, some patients’ lesions are characterized by generalized dry papules, with dry skin and rough surface, accompanied by fine flakes and cracks. If the affected area is scratched, blood crusts, scales and hyperpigmentation may appear around the lesions. There are many manifestations of atopic dermatitis. If the above symptoms occur, it is considered that they may be related to atopic dermatitis, and patients are advised to consult a doctor for examination to clarify the cause.