Sclerotherapy, sometimes termed micro-sclerotherapy or direct-vision sclerotherapy, is the technique of injecting a sclerosing agent into abnormal veins using a fine needle. A number of sclerosing agents are available for this procedure. Once injected into the vein, sclerosants irritate the inner vein lining, leading ultimately to vein closure. External compression with medical stockings is essential to achieving the best outcome. Successfully treated veins will fade as they are gradually removed by the body. In many patients, sclerotherapy can relieve the symptoms caused by varicose veins. With this procedure, veins can be dealt with at an earlier stage, helping to prevent further complications.
Some veins may need to be injected more than once for optimum results. Generally, normal activities can be resumed straight after sclerotherapy. Medically prescribed compression stockings may need to be worn for several days or weeks to assist in resolution of the veins.
The procedure is performed in the doctor´s office and usually causes minimum, transient discomfort. Sclerotherapy is considered the gold standard in treatment of spider veins of the legs.