What is chloasma? Chloasma is a kind of skin disease with increased pigmentation, which is usually found on the face and other exposed parts. It is also called “sallow spot”, “butterfly spot” and “liver spot” in Chinese medicine. It is more common in women, especially in women of childbearing age, and the ratio of female to male patients is about 9:1. What are the characteristics of melasma? Melasma mostly involves cheeks, cheeks, nose, forehead and chin, and occasionally spreads to upper limbs and forehead. The skin lesions are often brown or black patches of different degrees. The size of the lesions varies and can be round, irregular or linear, or scattered around the lamellar discoloration, and if the lesions are symmetrically distributed on the cheeks, they can look like butterfly wings. If the lesions are symmetrically distributed on the cheeks, they may look like butterfly wings. The base of melasma is mostly erythematous, and there is no scaling on the surface. The disease is a chronic skin disease, the course of which can last for months or years. The cause of melasma is not yet clear, but it is believed that endocrine disorder, genetics and ultraviolet radiation may be the main causes. For example, pregnancy (so also called gestation spot), dysmenorrhea, chronic hepatitis (so also called liver spot) can induce chloasma. Sunlight can make chloasma more obvious, so it is often light in winter but heavy in summer. How to treat melasma 1.General treatment: Pay attention to sun protection, apply sunscreen before going out, and take sun protection measures such as playing umbrella, wearing hat and long-sleeved clothes. Regular life, adjust work and rest, and ensure a certain amount of sleep every day. Keep a happy mood and stop using contraceptive pills and other drugs that may induce melasma. 2.Allopathic treatment: Combination of Chinese and Western medicine can be used, generally 1 month is a course of treatment.