As with any interventional procedure, we will first explain in detail the steps of sclerotherapy and walk you through the entire patient journey. At FSA Vein, we do not treat your problems in isolation – every procedure is preceded by a thorough evaluation of your medical history. Sclerotherapy itself is facilitated by an injection of the appropriate sclerosant via a needle and syringe. We will position you to ensure maximal comfort and ensure that you are topically anesthetized (usually with a numbing agent such as lignocaine) prior to entering the target vein. In small veins, you can usually see the disappearance of the varicosities almost immediately! However, for larger veins, this effect may take longer. Sometimes, if the target vein is fairly large or deeper, we may even adopt the use of ultrasound guidance to precisely localize the vein.