Sclerotherapy is a minimally invasive procedure used to treat both varicose veins and spider veins. This procedure involves small injections of a sclerosing (hardening) medication using a very fine, thin needle. The sclerosing medication irritates the vein lining causing it to collapse and seal shut. As the healing process continues, the treated veins will fade from sight.
Information sourced from the American Vein & Lymphatic Society, Sciton and Medtronic.