Sclerotherapy is the preferred treatment for spider veins, smaller varicose vein branches and reticular veins. It involves the injection of a sclerosing solution into an abnormal vein through a small needle. The solution destroys the vein wall, with the vein then closing off, scarring, shutting down, fading, and gradually disappearing. As opposed to laser treatment, which is termed thermal ablation, sclerotherapy is a form of chemical ablation. The solutions used at The Vein Center of Florida and The Vein Center of South Baldwin are very safe with very few allergic reactions reported.