"melasma"的定义和意义

What is "melasma"?

Melasma is a common skin condition that causes brown or grayish patches to develop on the face, particularly on the cheeks, forehead, nose, and upper lip. It is more common in women, especially during pregnancy or when using hormonal birth control methods, but it can also affect men. Melasma is often triggered by sun exposure and hormonal changes, such as pregnancy or hormone therapy. While it is not harmful, melasma can be distressing for some people due to its impact on appearance. Treatment options include creams applied directly to the skin, chemical peels, and laser therapy to lighten the patches and even out skin tone. Sun protection, such as wearing sunscreen and hats, is also important to prevent melasma from worsening.