Bier spots are small, light macules usually found on the arms and legs of young adults, in which the intervening skin may seem erythematous but blanches with pressure so that these light macules disappear. This is a benign physiologic vascular anomaly of no significance clinically.

Are Bier spots bad?

Bier spots are small, hypopigmented macules that are usually found on the arms and legs of young adults. The intervening skin may seem erythematous but blanches with pressure so that the hypopigmented macules disappear. This is a benign vascular anomaly.

Are Bier spots normal?

The spots are thought to be due to raised pressure constricting small veins (venous hypertension ) and in most cases no cause is found (idiopathic). Bier spots usually affect healthy people, and may appear during pregnancy.