Congenital valve defects: A lot of people are born with blood valves that do not perform correctly. These valves may well enable blood to pool or back again up into your legs, causing varicose veins. A surgery called vein ligation or vein stripping entails tying off and eliminating varicose veins. https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-a-comprehensive-guide/