When these valves usually do not functionality correctly, blood pools and strain builds up, weakening the veins and producing them to have enlarged and twisted. Sclerotherapy consists of injecting a solution straight in to the vein, leading to it to scar and rerouting blood by means of more healthy veins. https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-from-the-perspective-of-a-vascular-surgeon/