A tan or dark skin discoloration, particularly common in pregnant women, thought to be caused by the stimulation of melanocytes by estrogen and progesterone
A dark discoloration of the skin, usually local; as, Addison's melasma, or Addison's disease
a tan discoloration of a woman's face that is associated with pregnancy or with the use of oral contraceptives
{i} dark blotchy pigmentation on the cheeks and forehead (often occurring in pregnant women, women who use oral contraceptives or menopausal women), chloasma, mask of pregnancy; hyperpigmentation