Red, itchy and peeling skin on both sides of the nose may be caused by rosacea, seborrheic dermatitis and contact dermatitis. 1. Rosacea: the pathogenesis is not clear, may be genetic background based on a variety of factors stimulation caused by skin immunity, as well as vasodilatory function abnormalities, resulting in chronic inflammatory diseases. It may cause symmetrical erythema on the face, nose and other parts of the face, which may lead to red, itchy and peeling skin on both sides of the nose. 2. Seborrheic dermatitis: the etiology is not yet clear and Malassezia colonization, lipid increase, immune response, skin barrier function is impaired, may cause the skin with small pieces of chaffy flakes, itchy skin, skin erythema and other symptoms, can also lead to red and itchy skin on both sides of the nose and peeling. 3. contact dermatitis: the use of soap cosmetics skin care products, or contact with other allergens, may cause local skin allergic reactions, can also lead to the sides of the nose and red and itchy and peeling. Both sides of the nose and red and itchy and peeling, there may be other reasons, it is recommended to go to the hospital in a timely manner to check, clarify the cause of treatment as prescribed by the doctor.