Congenital valve defects: A number of people are born with blood valves that do not perform appropriately. These valves may perhaps let blood to pool or back again up in to the legs, creating varicose veins. More recent therapies contain endovenous thermal ablation and transilluminated power phlebotomy (a modified method https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-a-comprehensive-guide/