We report a patient with anemic macules over cyanotic skin which started in
the 8th month of a normal pregnancy. We thought that these lesions were cl
ose to Bier's spot description althought it has never been described during
pregnancy. The relationship with pregnancy is likely because skin lesions
regress in post-partum. It probably represents an exaggerated physiological
response of small vessels to venous hypertension observed during pregnancy
in predisposed women.