Keep in mind that no medical treatment is ever 100 percent risk-free and cannot be 100 percent guaranteed. While it's true that once a varicose vein is removed surgically, it will not reappear, that doesn't mean you will forever be free of varicose veins. Other veins can develop problems. Remember that surgery is a rather drastic measure. The less drastic corrective measures such as sclerotherapy or laser treatments are by no means 100 percent effective 100 percent of the time. And none of the corrective measures can be guaranteed to be totally pain-free.