The veins within the legs have one-way valves which close when the muscles relax to prevent the backward flow of blood. When these valves malfunction because the vein walls weaken, blood can pool in the veins and cause them to bulge outward. This process can be seen in this video in a detailed animation of the vein system of the lower body.
If you are seeing varicose veins appear on the surface of your legs, schedule a consultation with Chicago Vein Institute. We offer several non-surgical treatment options along with superior diagnostic techniques to give you completely customized care for your circulatory health. Contact us online or call us at (773) 649-4678 for your first appointment.