While new spider veins may form on other areas of the legs, treated spider veins will not return. Sclerotherapy, as an example, gently and safely dissolves the affected vein. These veins cannot return, as they are put out of commission to allow blood to reroute through healthy veins. If the underlying cause of unhealthy veins (chronic venous insufficiency) is not addressed by a vein doctor, visible veins may appear in other areas. A common misconception about vein treatment is that the problem veins will return after treatment. This is not the case. However, chronic venous insufficiency does progress when left untreated. Cosmetic treatments cannot solve a medical issue, which is why it’s crucial to be evaluated by a board-certified vein doctor to make sure your spider veins are not indicative of greater health issues beneath the skin. Our vein doctors treat the underlying issue, not just what’s on the surface.