1. 
   Mask of pregnancy
   Mask of pregnancy: Muddy-brown pigmentation on the cheeks or elsewhere on the face that develops in about half of all women during pregnancy. Some women also develop it outside pregnancy, as do some women on hormone therapy. The pigmentation is worsened by ultraviolet (UV) light, which tends to dark...
   Found op http://www.medterms.com/script/main/art.html?articlekey=10004
   
   
2. 
   mask of pregnancy
   Synonym for melasma ... <medicine> A dark discolouration of the skin, usually local; as, Addison's melasma, or Addison's disease. Melasmic. ... Origin: NL, fr. Gr. Black spot. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?mask+of+pregnancy
   
   
3. 
   Mask Of Pregnancy
   Brownish or yellowish patches that can appear anywhere on the face, but are seen most commonly on the forehead, upper cheeks, nose, and chin. The pregnancy hormones estrogen and progesterone stimulate the melanin cells in the skin to produce more pigment, yet because these cells do not produce extra...
   Found op http://www.pregnology.com/AZ/M/2
   
   

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