If these valves are weak or weakened, blood can movement backward and pool while in the veins, producing the veins to stretch or twist. Occasionally varicose veins seem like cords within just the skin. Any vein may become varicose. But varicose veins are most typical while in the legs and https://www.sgvascularctr.com/what-surgery-is-available-for-varicose-veins/