What Are Varicose Veins

Varicose veins affect 30-40% of the population and occur when the one-way valves that are meant to pump blood from the legs and feet toward the heart weaken. When this happens, blood is allowed to pool in the veins. Over time the pooled blood builds pressure, and the veins swell, which may cause symptoms such as leg swelling, aching, heaviness, burning, throbbing, or pain. Without treatment, the condition may grow worse over time.