Normal, healthy veins have one-way valves that keep blood moving toward the heart. But when the valves in the superficial veins of the legs and feet are not working properly, the blood can pool into the lower extremities.3,4
The pooling of blood creates surrounding pressure and swelling internally, which may result in enlarged blue, red or flesh-colored vein that can be seen through the skin. Over time, this can lead to other changes to the texture of the skin, and ultimately leg ulcers, if not treated properly.
Prolonged standing, pregnancy, obesity, straining, trauma, heredity or age can contribute to the development and progression of varicosities. Learn more about varicose vein risk factors.