The dry, itchy, red, flaky face is considered to be caused by rosacea, seborrheic dermatitis, atopic dermatitis and other diseases. 1. Rosacea: its cause is more complex, may be genetic, skin barrier function damage, neurovascular dysfunction and other factors, this disease is common in the face, mostly manifested in facial redness, dryness and itching, tingling and other symptoms. 2. Seborrheic dermatitis: commonly found on the head, face, chest and back, mainly related to heredity, diet, microbial infections, impaired immune function and other factors, the patient will appear diffuse erythema, flaking, itching and so on. 3. atopic dermatitis: the cause of the disease is not yet clear, perhaps and heredity, skin barrier function abnormalities and other factors related to the basic characteristics of dry skin, intense itching and chronic eczema-like dermatitis, the skin will appear erythema, pimples, and other symptoms, infants and young children with atopic dermatitis is seen in the face, neck, limb extensions and other parts of the body, and adults are commonly found in the neck, limb flexion and other parts of the body. The cause of dry itchy red skin face more reasons, may also be solar dermatitis, contact dermatitis, etc., recommend that patients seek medical examination to clarify the cause of the disease.