Varicose veins are swollen, enlarged veins that are clearly visible just under the surface of the skin. For some people, they cause pain, blood clots, or sores. This ailment usually occurs in the legs, but also can appear in other parts of the body.
Varicose veins are a common condition caused by problems with the valves within the veins. Veins have one-way valves that help keep blood flowing toward your heart. If the valves are weak or damaged, blood can back up and pool in your veins, which causes them to swell.
Many factors can raise your risk for developing varicose veins, including family history, older age, female gender, pregnancy, obesity, prolonged standing or sitting, blood clots and prior trauma.