Peeling and redness in the deltoid region of the face may be caused by seborrheic dermatitis, rosacea, and other skin diseases, and medications can be used to alleviate the symptoms. 1. Seborrheic dermatitis: associated with Malassezia colonization, increased lipids, impaired skin barrier function, immune response and individual susceptibility. Clinically, there will be localized erythema, or accompanied by slight flaking, so that the triangle of the face appears peeling red symptoms. It can be treated with vitamin B2, B6 and other drugs, topical calcium-modulated phosphatase inhibitors and glucocorticoids. 2. Rosacea: It is a chronic inflammatory skin disease with persistent erythema and capillary dilatation that occurs in the middle of the face. The pathogenesis is unclear. It may be related to genetics, skin immunity and abnormal vasodilatory function. Patients with symptoms of peeling and reddening of the deltoid region of the face can be treated with topical fusidic acid, systematic use of minocycline, doxycycline and other antibiotics. Patients with redness and peeling of the facial triangle should go to a regular hospital for a comprehensive examination of dermatology to determine the cause of the disease, and under the guidance of the doctor to treat the symptoms with medication. During the treatment period, you should have a regular diet, consume less greasy, spicy and irritating food, and do not overuse warm water and alkaline soap to clean your face.