Melasma is sometimes called the “mask of pregnancy” because it frequently affects pregnant women. Pregnant women have increased levels of the hormones estrogen and progesterone. These hormones are thought to contribute to your melasma. The darker color usually fades after pregnancy.
Commonly affected areas include your face, including the cheeks, upper lip and forehead, as well as the forearms.
Fairer-skinned people are less likely to be affected by melasma than those with darker brown skin or those who tan well.
Although it is completely harmless, it understandably makes some people feel self-conscious.