Numerous and large Bier's spot associated with pregnancy.

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 close to Bier's spot description although 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.