What causes chloasma

Chloasma is a common skin disease that occurs more often than not in middle-aged women. However, with the development of society and climate change, it is gradually spreading to younger people. Therefore, female friends should not take chances and should understand some knowledge about chloasma, which will help prevent these spots from growing on their faces. First of all, you need to know what causes chloasma. Only by knowing the cause can you find a way to prevent it. Let’s learn about the cause below.

First, the main external factor that causes chloasma is exposure to the sun, which is long-term exposure to ultraviolet rays in the sun. According to research, ultraviolet rays are the main cause of melanin formation, and long-term stimulation of the skin will cause the deposition of spots.

Secondly, the factors that form chloasma are harmful substances. The harmful substances here are not just some domestic waste, but also include harmful substances that are invisible to the naked eye, such as radiation from electronic products, dust particles in the air, and chemical pollution. Therefore, patients with melasma should reduce contact with harmful substances. In particular, avoid long-term contact with chemical raw materials, paints and coatings, computers, mobile phones, etc.

The third point is the imbalance of yin and yang in the human body: First, due to liver qi stagnation, blood stasis occurs on the face; second, due to spleen and stomach weakness, qi and blood cannot moisturize the face, damp heat rises to the face to form spots; third, due to kidney yang deficiency, yang qi is diffused, blood stasis occurs on the face to form chloasma.

Fourth, increased androgen and progesterone: After pregnancy, the placenta secretes more androgen and progesterone, so pregnant women often have symmetrically distributed chloasma on their cheeks. However, after delivery, when the body's androgen and progesterone secretion returns to normal, the spots will naturally lighten or disappear for most people.

Fifth, drug factors: 9% to 20% of women who take oral contraceptives for a long time are prone to chloasma, and some even develop facial spots one month after taking oral contraceptives. In addition, taking drugs for high blood pressure and diabetes and eating more photosensitivity foods such as celery, coriander, carrots, etc. can also easily cause chloasma.

Sixth, the formation of chloasma is related to daily diet. Not only the consumption of junk food, but also some greasy, high-sugar, high-salt foods, and even fruits and vegetables with pesticide residues are the culprits of chloasma. Therefore, patients with chloasma should have a balanced diet and repeatedly rinse vegetables and fruits with clean water before eating to reduce the intake of harmful foods.