They occur when damage to blood vessels close to the ... and measure 1-3 millimeters in diameter. Arterial spider veins are flat, appear red or pink, and measure 0.1-1 millimeter in diameter.

Spider veins (telangiectasia) and small varicose veins are small blood vessels that become purple or red, swollen, twisted, and pushed to the skin’s surface. They can cause discomfort but rarely ...