melasma

/məˈlæzmə/
noun
  1. A common skin condition causing brown or gray-brown patches, usually on the face, often triggered by sun exposure or hormonal changes.
    • Melasma can fade on its own after childbirth or when hormonal levels return to normal.
    • Many pregnant women develop melasma, sometimes called the 'mask of pregnancy.'
    • Her dermatologist recommended sunscreen and a special cream to treat the melasma on her cheeks.
Synonyms