Eczema is different from perioral dermatitis. 1. Eczema is a chronic inflammatory itchy skin disease that can occur in many parts of the body, and can also occur in the breast for breast eczema. The rash is polymorphic, symmetrical distribution, patients have obvious itching symptoms, the incidence of a wide range of people, easy to recur after the cure, seriously affecting the quality of life of patients. The cause of the disease is not clear, and is related to heredity, immune abnormalities, changes in female hormone levels, endocrine and metabolic diseases, chronic infectious foci, psychosocial factors, etc. It can be treated under the guidance of the doctor through medication, physical therapy, traditional Chinese medicine, etc. The patient should develop healthy dietary habits, pay attention to personal hygiene, avoid the affected area of the wind and the sun, and maintain a good state of mind. 2. Perioral dermatitis is an inflammatory skin disease mainly characterized by erythema, papules and scales, manifesting as 1-2mm-sized papules, pimples, pustules, erythema and other lesions visible around the mouth. They are often scattered and preferred in the nasolabial folds, upper lip, nose, forehead and other parts of the body. However, there is a narrow area around the mouth and lips that does not produce a rash. Most of the rashes are symmetrically distributed and may be self-conscious of an itching or burning sensation. The disease is most common in women between the ages of 20 and 35. The condition may occur in periodic episodes or may be acutely exacerbated by exposure to sunlight, alcohol, or stimuli such as hot food or cold. If you have any symptoms, you should go to the hospital for treatment to avoid delay.