Spring face itchy red skin may be seborrheic dermatitis, solar dermatitis and other causes. 1. seborrheic dermatitis: the etiology of this disease is not clear, may be related to Malassezia colonization, lipid increase, skin barrier function is impaired, immune response and individual susceptibility, in addition, mental factors, B vitamin deficiency, diet, alcoholism and other factors, can varying degrees of impact on the development of this disease, manifested in redness of the skin, on which there are oily scales, itching and other symptoms. 2. Solar dermatitis: this disease is associated with too much sunlight, exposure time is too long, or individual skin sunburn factors, genetic factors, generally aggravated in spring and summer, manifested as skin erythema, itching, peeling, pimples, papules and other symptoms. It is recommended that patients go to the dermatology department of regular hospitals, combined with relevant examinations, after a clear diagnosis, reasonable treatment under the guidance of the doctor, to avoid delaying the condition.