Varicose vein disease and specifically spider veins are most commonly treated by sclerotherapy . The treatment involves injecting a ‘sclerosant’ solution directly into the vein. The goal of treatment is irreversible venous closure (fibrotic occlusion) followed by absorption of the vein. Venous blood is then redirected from the abnormal varicose vessel to healthy veins.
As a result, leg discomfort and cosmetic appearance improves. Both ‘liquid’ and ‘foam’ formulations are used. Liquid injection is used for smaller, surface veins. Foam injection has an increased potency and thus is used to treat larger veins. In addition, foam can be observed under ultrasound, in real time, for better precision.