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Sclerotherapy uses an injection of a special chemical (sclerosant) into a varicose vein or spider veins. The injection damages and scars the inside lining of the vein. This causes the vein to close.
During this procedure, the affected leg is propped up to drain blood. Then the sclerosant is injected into the varicose or spider vein. This is done in a doctor's office or clinic. It may take about 15 to 60 minutes. How long it takes depends on how many veins are treated and how big they are.
After the injection is given, pressure is applied over the veins. This is to prevent blood returning to the veins when you stand up. You may need to wear compression bandages or stockings after the procedure. Your doctor will tell you how long to wear them.
Sclerotherapy may be painful. The shot of sclerosant can cause a feeling of burning or cramping for a few minutes in the area where the shot was given. You may need repeated sessions and many injections each session. It depends on how bad the varicose and spider veins are and what type of sclerosant is used.
Another technique allows your doctor to inject sclerosant with a catheter. This is sometimes called endovenous ablation. The catheter and sclerosant are guided to the affected vein with the help of duplex ultrasound. This process allows sclerotherapy treatment to be used on larger varicose veins.
For most people, sclerotherapy doesn't require any recovery period. After the treatment, you will likely be able to walk right away. Avoid strenuous exercise until your doctor says it's okay. This may be for 2 weeks. Walk every day for at least 10 minutes. Try not to sit or stand for long periods of time.
For the first 2 weeks after the procedure, avoid exposing your legs to the sun.
You'll probably have to wear compression bandages or stockings after the procedure. Your doctor will tell you how long to wear them. This may be at least 1 week.
Sclerotherapy is used to treat:
It may be done on its own or as a follow-up to another procedure or surgery.
Sclerotherapy may reduce symptoms and improve the look of the skin. It seems to work in more than 70 out of 100 people. It might not work for up to 30 out of 100 people who have the procedure.footnote 1
The risks of sclerotherapy include:
CitationsWhing J, et al. (2021). Interventions for great saphenous vein incompetence. Cochrane Database of Systematic Reviews, (8). DOI:10.1002/14651858.CD005624.pub4. Accessed August 30, 2022.
Current as of: December 19, 2022
Author: Healthwise Staff
Medical Review:E. Gregory Thompson MD - Internal Medicine & Adam Husney MD - Family Medicine & David A. Szalay MD - Vascular Surgery
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