Sclerotherapy for Varicose Veins, Hemorrhoids, and More

If self-help strategies don’t help your varicose veins, sclerotherapy may be a good treatment option.

If you have unsightly varicose veins, self-help strategies—such as weight loss, physical activity, not standing up for long periods of time, elevating your legs when sitting down, and wearing compression stockings—can sometimes mitigate their appearance. However, if these approaches don’t help, and if you’re bothered by the appearance of your veins or find them uncomfortable, there are several minimally invasive options for treating them. One of the most popular approaches is sclerotherapy, which is particularly effective at treating smaller varicose veins. Sclerotherapy can also be used to treat spider veins, which are clusters of tiny blood vessels that develop just under the surface of the skin.

How Varicose Veins Form

Sclerotherapy works by directly targeting varicose veins, which can develop due to a range of reasons, including age and pregnancy. They are more common in women, and it is thought that the hormone estrogen may play a role in their development. You are more likely to develop varicose veins if you take hormone replacement therapydrugs. Obesity and prolonged standing also increase your risk, and the condition tends to run in families.

Your veins have valves that close to stop blood from flowing backward instead of flowing towards your heart. These valves usually work efficiently when you are younger, but as you age they may become weaker due to the wear and tear caused by continually opening and closing for many years. Eventually, the valves can leak and allow blood to flow in the wrong direction, back towards your feet. The blood pools in the veins in your lower extremities, and this causes the veins to become larger than normal, and assume a gnarled, knotted appearance.

Sclerotherapy essentially closes these veins, making them less visible and reducing your risk of complications that may develop due to the veins.

What’s Involved in Sclerotherapy

In sclerotherapy, a special solution is injected into the veins (a foam version of the solution may be used if the vein is large). The solution causes the vein walls to swell and stick together, and the blood to coagulate. The vein then collapses and is no longer visible.

You don’t need to have an anesthetic for sclerotherapy, and the procedure can be done in your dermatologist’s office. He or she may use ultrasound to guide the needle. You may feel a burning sensation from the solution, but most people who have sclerotherapy report feeling nothing bar the pinch of the injection and some residual tenderness afterwards (you also may develop some bruising in the area).

What to Expect After Sclerotherapy

You will probably be advised to wear a compression stocking for a couple of weeks following your sclerotherapy procedure, and it’s also important to stay mobile, though your doctor may advise you to avoid strenuous physical activity. Try not to expose your treated leg to strong sunlight after sclerotherapy, since the sun can cause dark patches to develop on treated skin.

Your varicose veins should collapse over the course of a few weeks, but some people find their veins require more than one sclerotherapy treatment, and some people have to have sclerotherapy several times for the veins to collapse completely (repeat sclerotherapy treatments usually take place about six weeks apart). Keep in mind that larger veins will take longer to collapse.

It’s very unusual for people to suffer complications following sclerotherapy, but some people notice clusters of visible blood vessels near the area where the varicose vein was. If this happens to you, don’t panic—these blood vessels usually fade. It’s also possible for the injection to introduce tiny air bubbles into your bloodstream, and these may cause headaches, nausea, and fainting. Report these symptoms to your doctor if they occur.

It’s rare to develop serious complications—such as a blood clot—after a sclerotherapy procedure, but it is possible, so stay alert for symptoms that can indicate a blood clot, such as swelling and discomfort in your leg, difficulty breathing, and/or chest pain. If you develop these symptoms, call 9-1-1 or ask somebody to take you to the local Emergency Department.

Other Uses for Sclerotherapy

Sclerotherapy also can be used to treat hemorrhoids, which develop when veins in the rectal area swell and become irritated. Hemorrhoids can bleed, and make bowel movements painful. While topical ointments can be good at shrinking hemorrhoids, those that don’t respond to ointments can be successfully treated with sclerotherapy.

Sclerotherapy is also a treatment approach for a condition called hydroceles, which typically affects the testicles and causes fluid to build up.

Other Varicose Vein Treatments

Sclerotherapy is best at treating mild-to-moderate varicose veins. If your varicose veins are prominent, your doctor may recommend ablation or a procedure called phlebectomy.

  • Ablation is carried out using a catheter inserted into the affected vein through a small incision. In radio frequency ablation, a electrode is inserted into the catheter and heated—as the catheter is withdrawn, the heat causes the vein to collapse and seal. Laser ablation works in a similar way, but a laser fiber is introduced through the catheter. Both procedures are performed under ultrasound guidance, and typically take about one hour. You’ll be given a local anesthetic.
  • Phlebectomy involves having a small incision made over the vein, which is then removed with an instrument that looks like a small crochet hook.

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