melasma

from WordNet (r) 3.0 (2006)

melasma
    n 1: a tan discoloration of a woman's face that is associated
         with pregnancy or with the use of oral contraceptives [syn:
         {chloasma}, {melasma}, {mask of pregnancy}]

from The Collaborative International Dictionary of English v.0.48

Melasma \Me*las"ma\, n. [NL., fr. Gr. ? black spot.] (Med.)
   A dark discoloration of the skin, usually local; as,
   Addison's melasma, or Addison's disease. -- {Me*las"mic}, a.
   [1913 Webster]

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