Where do spider veins come from?
A quick lesson in the human vascular system explains why they develop. Veins return deoxygenated blood to the heart. In the legs, the veins face an uphill battle, fighting gravity the entire way. When we’re young, the muscles and tissues surrounding our veins help push the blood, but as we age these tissues weaken and don’t provide the same support. The vein walls also weaken. This allows blood to pool. When the veins are close to the surface, they can be seen through the outer skin. These are spider veins. Other factors that can lead to a person developing these veins are jobs that require prolonged sitting or standing, heredity, weight fluctuations, pregnancy, and hormonal changes. Spider veins are more common for women and can usually be found on the thighs, ankles, and calves. They can also develop on the cheeks.