褐黄斑; 黄褐斑
Chloasma \Chlo*as"ma\, n. [Gr. ? to be green.] (Med.) A cutaneous affection characterized by yellow or yellowish brown pigmented spots.
chloasma n : a tan discoloration of a woman's face that is associated with pregnancy or with the use of oral contraceptives [syn: {melasma}, {mask of pregnancy}]