Endovenous ablation is an outpatient, non-surgical, safe and effective alternative treatment to traditional vein stripping, It is done to treat larger veins in the leg, such as the greater saphenous vein. The valves inside the veins start to leak and allow blood to flow backwards and stagnate. This condition is called venous reflux. Blood simply pools in the legs and can cause varicose veins, tired and achy legs and in severe cases ulceration of the skin. To treat this condition, a tiny nick in the skin is made, where a small catheter is inserted into the incompetent vein, which then delivers localized heat to the vein wall. The vein wall then becomes damaged, closes down and becomes permanently blocked.