The general phenomenon of facial redness is caused by transient vasodilation. However, the mechanism is not clear and is related to a variety of factors such as emotions and autonomic dysfunction. It is commonly seen in patients with obsessive-compulsive neurosis and mental retardation. It is more common in women. Clinically common facial redness are: 1. Physiological facial redness is a normal physiological response of the body to a hot environment and physical activity. Patients are prone to facial flushing with emotional changes such as shyness, fear, nervousness, praise or criticism, or when the temperature changes. 2. Menopausal flushing occurs in a small number of women around the time of menopause or due to diminished or lost ovarian function on both sides. It is characterized by paroxysmal flushing that lasts for about 15 minutes. Sometimes accompanied by sweating, irritability and anxiety and other symptoms 3, tumors Some tumors release vasoactive substances can cause facial redness clinical attention. 4.Drinking alcohol etc. Drinking beverages, especially alcohol, can cause facial or general redness. 5, drugs and other causes of facial redness such as antihypertensive drugs and niacin can produce skin flushing. In addition, hyperthyroidism, rheumatism, tuberculosis, etc. can also cause facial redness. The clinical need to find the cause of the disease and treatment.