How is the face easy to get red and hot in summer?

From a medical point of view, blushing and burning are caused by the change of temperature or situation, which makes people's face turn red and dark, and is caused by the nerve expansion of blood vessels. Because facial nerve and blood vessels are more abundant than other parts, it is more obvious. The physiology of facial redness and burning is also pathological. Healthy people may appear rosy with a little activity because of good peripheral blood circulation. Some people blush when they are shy, angry or ashamed, some people blush after drinking, or blush because the air is thin and oxygen-deficient at high altitude in the mountains for a long time, and hemoglobin in the body needs to absorb more oxygen. Some diseases can also cause blushing and burning, such as hypertension, tuberculosis and systemic lupus erythematosus. No other special performance generally does not require special treatment. If there is pathological blushing, you need to go to the hospital for examination and find out the reason for treatment.