There are many causes of frequent facial redness, which may or may not be accompanied by other symptoms in patients, usually considered to be related to physiological factors, external factors, and pathological factors. I. Physiological factors: 1. Emotions: when emotionally excited, such as in the case of anger, there may be a red face, which is a normal physiological phenomenon and does not require special treatment; 2. Exercise: after exercise, due to the expansion of facial capillaries or increased blood circulation, which may lead to a red face; 3. Menopause: after women enter menopause, due to the disruption of hormone levels in the body, it is easy to have false sweating, irritability, facial Redness, etc.; 4, other: long-term residence in the plateau, cold areas or people who have suffered frostbite, the face blood circulation is blocked, may make the face red, with red blood. In addition, the face will often be red when exposed to strong ultraviolet light for a long time, usually seen in construction workers, farmers, etc. Second, pathological factors 1, allergies: If the face is often red and accompanied by obvious itching, consider that it may be caused by facial allergies; 2, diseases: the face has dermatitis or eczema and other inflammatory diseases, the face will appear persistent redness; 3, vascular malformation: vascular malformation of the face will also appear persistent redness.