Outside the nostrils, dry red itchy lips, generally considered seborrheic dermatitis, facial eczema, perioral dermatitis symptoms, need to go to the hospital dermatology treatment in a timely manner, the treatment includes general treatment, drug treatment and other methods. 1. Seborrheic dermatitis is related to staying up late, eating spicy and stimulating foods, and hereditary factors. The main manifestation is a large area of facial skin flushing, flushing spots with flaking and pimples, often with a mild itching sensation. Treatment can be topical metronidazole gel, fusidic acid cream and other antiseptic drugs, usually pay attention to early to bed and early to rise, do not stay up late, eat less spicy stimulating food. 2. Facial eczema is usually caused by skin contact with poor quality cosmetics and skin care products. The performance of the facial skin symmetrical erythema, flaking, itching, serious skin dry cracks and oozing. Facial eczema can be taken orally, ebastine tablets, diclofenac tadine tablets and other desensitizing drugs to relieve itching. 3. The cause of perioral dermatitis is unknown, and long-term use of fluoride toothpaste or skin irritation of lipstick and other items have a certain relationship. The performance of a circle of dry, red skin around the lips, accompanied by varying degrees of itching. It can be treated with anti-inflammatory reaction drugs such as pimecrolimus cream and tacrolimus ointment externally. The above situation, it is recommended to go to the hospital in time, identify the causes, symptomatic treatment, drugs need to be used in accordance with medical advice.