Melasma is a skin condition where brown patches appear on the skin. These patches usually appear on the cheeks, nose, forehead, chin, and upper lip. Patches can also appear on the neck and forearms.

It is common during pregnancy, but can happen in men and women.

Common Site for Melasma
Melasma usually appear on the face.
Copyright © Nucleus Medical Media, Inc.

The brown patches are due to an increased amount of melanin in the skin. The exact cause of increase in melanin is unknown. It is thought to be associated with hormones such as estrogen and progesterone. Sun exposure also plays a major role.