Melasma
Melasma is a common acquired skin disorder that presents as a bilateral, blotchy, brownish facial pigmentation.
The cause of melasma is complex; it has been proposed to be a photoageing disorder in genetically predisposed individuals. The pigmentation ultimately results from the overproduction of melanin by melanocytes; either taken up by keratinocytes and/or deposited in the dermis.
Factors implicated in the development of melasma include:
Family history
Sun exposure
Hormones
Medications and scented products
