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chloasma (klo-az´ma)

Melanoderma or melasma characterized by the occurrence of extensive brown patches of irregular shape and size on the skin of the face and elsewhere; the pigmented facial patches if confluent are also called the mask of pregnancy, and are associated most commonly with pregnancy and use of oral contraceptives.moth patch; [G. chloazo, to become green]
c. bronzi´num a bronze-colored pigmentation, probably produced by hormone imbalance, occurring in gradually increasing areas on the face, neck, and chest in persons exposed continuously to the tropical sun; similar to c. of the temperate zone, but intensified because of strong sunlight.tropical mask;


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