Spider veins effect many people, especially women. The location is usually on the lower extremity. They are seen as dark capillary networks of tiny vessels. They can be removed by injecting a sclerosing agent into them, collapsing the veins, and allowing them to dry up. Many different agents are used. My preferred agent is Asclera. It is FDA approved in the United States for treatment of spider veins in lower extremities. People get a good response from one treatment. For best results a few treatments are recommended about a month apart. Downtime is minimal. The procedure is done in the office, no anesthesia is necessary. If you have larger veins, you might need to be evaluated by a vascular surgeon and with an ultrasound, to make sure you do not have significant valve reflux.