Hyperpigmentation | Melasma
Hyperpigmentation is the darkening of the skin or nails caused by increased melanin, the pigment responsible for producing the color of the eyes, skin, and hair. Hyperpigmentation can be caused, for example, by sun damage, inflammation, and acne. Melasma is a type of hyperpigmentation and is also commonly known as pregnancy mask. It is a tan or dark brown skin discoloration often found on the upper cheek, nose, lips, upper lip and forehead. It is also evident in pre-menopausal women and is caused by changes in hormone levels.