Bier spots constitute a distinct pattern of vascular mottling composed of small, irregular maculae, often triggered by external compression of the limb.1 The spots are caused by a vasoconstriction in microvessels caused by a lack of oxygen2,3 and are therefore regarded as a nonphysiologic phenomenon precipitated by vascular occlusion. Herein we describe a macular vascular pattern of the skin resembling Bier spots that may develop spontaneously during mild venous stasis.
Gniadecki R, Gniadecka M. Constitutive Speckled Vascular Mottling of the Skin Resembling Bier White Spots: Lack of Venoarteriolar Reflex in Dermal Arterioles. Arch Dermatol. 2000;136(5):674-675. doi: