Sclerotherapy is a simple procedure performed on superficial veins. Generally these veins are not problematic but unsightly in appearance. Therefore most of these procedures are done for cosmetic reasons. The treatment involves an injection of a solution into the vein that causes the vein walls to swell, stick together and seal shut. Once the vein is shut there is no blood flowing in it and it turns into scar tissue. It usually takes about two weeks for the scar to fade. Sclerotherapy does not require any anesthetic and is performed in our outpatient interventional department.