Do varicose and spider veins serve any useful purpose?
In the vast majority of cases, spider and varicose veins do not serve any useful function; only in extremely rare cases, when the deep veins of legs are blocked, varicose veins of legs may carry useful circulation. In fact, the backward flow of blood in varicose veins and saphenous veins interferes with the normal venous return of blood to the heart. Removal of these abnormal veins actually improves circulation of blood in the treated leg. It is this improvement in blood circulation that causes improvement of symptoms of tiredness and heaviness in the leg.
