Sclerotherapy
A very small needle is utilized to inject a solution into spider veins and some varicose veins. The solution causes the vessel to collapse. The cells lining the inside of the vein becomes irreversibly damaged and inflamed. External compression is applied to keep the vein collapsed, so blood can no longer flow through it, so it can become permanently sealed closed. The body then breaks down and removes the vein over weeks to months.
Ultrasound Guided Sclerotherapy
Using local anesthetic and under direct ultrasound guidance, a more concentrated sclerosing solution can be injected into deeper and larger veins. Other than the additional expertise and skill required to use imaging guidance, it is no different than standard sclerotherapy.