
Melasma, also known as chloasma, is a form of hyperpigmentation that appears on the face, especially on the cheeks, bridge of the nose, forehead and upper lip and sometimes on other sun-exposed parts of the body, such as the forearms. Men can experience melasma, but it is much more common in women.
Melanin is the pigment that defines the color of a person’s skin, and melasma is caused by an increase in melanin production. This increase is thought to be triggered by changes in hormone levels, especially those caused by pregnancy and oral contraceptives, as well as by the sun.
Melasma is not in any way harmful but can cause distress when it is very noticeable.