During this procedure, which is typically performed under local (awake) anesthesia, Dr. Surya Challa utilizes radiofrequency energy to heat and damage the walls inside of varicose veins. A thin tube (catheter) is placed inside the diseased vein through a small incision. The radiofrequency energy then causes scar tissue to form inside the vein, which closes it off and results in blood flow redirecting to healthy veins. Over time, the body absorbs the varicose vein, causing it to fade from view.