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Sclerotherapy uses an injection of a special chemical (sclerosant) into a varicose vein to damage and scar the inside lining of the vein. This causes the vein to close.
During this procedure, the affected leg is elevated to drain blood, and the sclerosant is injected into the varicose vein. The procedure is done in a doctor's office or clinic and takes 5 to 30 minutes, depending on how many varicose veins are treated and how big they are.
After the injection of sclerosant is given, pressure is applied over the veins to prevent blood return when you stand up. You may need to wear compression stockings for several days or weeks to maintain the pressure.
The sclerotherapy injection may be painful, and the chemical (sclerosant) that is injected 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, depending on the extent of the varicose veins and type of sclerosant used.
A newer, minimally invasive technique allows your doctor to inject sclerosant with a catheter. 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 that previously could only be treated surgically with ligation and stripping, in which larger varicose veins are tied off and removed.
Sclerotherapy generally does not require any recovery period. You will likely be able to walk immediately after the treatment, but you should take it easy for a day or two. Bed rest is not recommended, but you may need to avoid strenuous exercise for a few days after sclerotherapy. Avoid exposing your legs to the sun for the first 2 weeks after the procedure.
You will probably have to wear compression stockings for a short time after having sclerotherapy.
Sclerotherapy is used to treat:
Sclerotherapy may be done alone or as a follow-up to surgery.
Sclerotherapy costs less than surgery, requires no hospital stay, and allows a quicker return to work and normal activities.
Sclerotherapy can reduce symptoms and improve the look of the skin. It works in about 80 out of 100 people. It doesn't work for about 20 out of 100 people who have the procedure.1
The risks of sclerotherapy include:
If it is done for cosmetic reasons, sclerotherapy is usually not covered by insurance.
If you are considering sclerotherapy, you might want to consider some questions about treatment. These questions might include: How much experience does the doctor have with the particular treatment? How much do the exam and treatment cost? How many treatments does the doctor think you will need?
For help deciding whether to have a procedure for varicose veins, see:
In some cases, laser therapy or freezing (cryotherapy) may be used instead of sclerotherapy to treat small veins and spider veins.
Last Revised: February 1, 2012
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