We often say that we don't like to look at other people's faces. But you know what? Be sure to see your face clearly! Yangshengtang invited Zhu Xuejun, a professor of dermatology at the First Hospital of Peking University, to explain your chameleon skin. Through the change of skin color, we can not only see whether people's emotions are sad or happy, calm or angry, but also see the clues of internal diseases. Seemingly ordinary blushing may be caused by dermatomyositis, long-term hidden breast cancer, and even blood diseases! Experts tell us that middle-aged and elderly people with dermatomyositis must pay attention to tumors. Almost 30%-50% of patients with dermatomyositis can have tumor lesions one after another. At present, there is no definite conclusion on the specific pathogenic mechanism in medicine, but it is generally closely related to the monitoring function of immunity. If there is something wrong with the immune system, it will show up in the body. When the expert returned to Shanghai to visit relatives a few years ago, he found that menstruation was pale after such a long separation. The sensitivity of the dermatologist made him remind her to check immediately, and as a result, rectal cancer was discovered in time! Is blushing a good thing? But not all red is a sign of health. Experts have made a detailed distinction between red that needs vigilance and red that doesn't need vigilance. The former includes heart disease, tuberculosis, fever and rosacea. And most of them are permanent, so it is necessary to find out the cause in time for treatment. The latter includes sauna, after exercise, emotional excitement and so on. Most of these symptoms are temporary and can be relieved after leaving the environment that causes redness. Red face caused by polycythemia vera needs special vigilance! When the cells responsible for producing red blood cells in our bone marrow are abnormally cloned and produce too many red blood cells, human hemoglobin will rise beyond the normal range (13-17g for men and12-16g for women), which will easily lead to increased blood viscosity, cardiovascular and cerebrovascular diseases or other vascular embolic diseases. Proper blackening is good for skin and health. We orientals, especially women, like fair skin and think that "one white covers all the ugliness", but experts warn that proper blackening is good for skin and health. When ultraviolet rays are irradiated, melanocytes in the basal layer of the skin will produce melanosome, and melanosome will be distributed to cells in the stratum corneum like an umbrella to protect the skin from sunburn. In addition, melanin can also reduce skin inflammation. The skin of many outdoor workers is firmer than that of indoor workers, with occasional scratches and little inflammation. This is a fact. What's with the yellow-faced woman? As yellow people, we feel that the skin color is yellow, but experts warn that if the skin is too yellow and accompanied by itching, we should be alert to liver lesions, because patients with jaundice will produce too much bilirubin, which will deposit in the skin and cause itching. In addition, there is a kind of yellow that needs attention in our daily life, although it is not harmful to our health. Exogenous pigments carried by some foods will appear on the skin color. These foods include oranges and oranges containing orange, carrots containing carotene and so on.