Brown macular pigmentation in malar area in a pregnant female is due to -
Brown macular pigmentations over malar area is characteristic of melasma. maily effects the sun exposed areas like forehead cheeks temples and upper lip. melasma in pregnancy is called chloasma. This occurs due to hormonal changes and increased with exposure to sunlight. Iadvl textbook of dermatology , page 781
Acne rosacea
Cholasma
Acanthosis nigricans
Uicaric pigmentosa
Photosensitive disorders