Side Effects of Radiofrequency Ablation (RFA) for Varicose Veins

What Is Radiofrequency Ablation for Varicose Veins?

Radiofrequency ablation (RFA) is a minimally invasive vein treatment used to treat varicose veins and chronic venous insufficiency. Unlike pain-management ablation used in other medical fields, vein-specific RFA works by delivering controlled heat to close damaged veins, allowing blood to reroute to healthier veins.

The procedure is performed under local anesthesia, guided by ultrasound, and is designed to improve circulation and relieve symptoms such as leg pain, swelling, heaviness, and skin changes.

How Does Radiofrequency Ablation Work?

During RFA, a thin catheter is inserted into the affected vein, typically the great or small saphenous vein. Radiofrequency energy is delivered through the catheter, gently heating the vein wall. This heat causes the vein to collapse and seal shut.

Once closed, the treated vein no longer carries blood. Blood flow is naturally redirected to nearby healthy veins, and the sealed vein is gradually absorbed by the body. The procedure is precise, localized, and designed to minimize damage to surrounding tissue.

Common Side Effects After RFA Treatment

Radiofrequency ablation is considered safe and low risk, but like all medical procedures, it can cause temporary side effects. The most common side effects include:

• Mild pain, tightness, or tenderness along the treated vein
• Bruising or swelling at the insertion site
• A warm or pulling sensation in the leg
• Temporary numbness or tingling near the treatment area

These symptoms are usually mild and improve within days to a few weeks. Many patients describe the discomfort as similar to muscle soreness or a mild sunburn.

Less Common but Possible Complications

More serious complications are uncommon but can include:

• Inflammation along the treated vein
• Skin irritation or localized redness
• Small blood clots near the treated vein
• Infection at the catheter insertion site (rare)

Choosing an experienced vein specialist and following post-procedure instructions significantly reduces these risks.

Should I Be Concerned About Deep Vein Thrombosis?

Deep vein thrombosis (DVT) is a rare but possible complication of vein procedures, including RFA. The risk is low—generally estimated at around 1% or less—and patients are monitored closely to minimize this risk.

Your provider may recommend walking shortly after the procedure, wearing compression stockings, or scheduling follow-up ultrasounds to ensure proper healing and blood flow.

Recovery After Radiofrequency Ablation

Most patients return to normal daily activities within 24 hours after RFA. Recovery recommendations often include:

• Walking daily to promote circulation
• Avoiding prolonged sitting or standing
• Limiting heavy lifting or intense exercise for a short period
• Wearing compression stockings if recommended
• Using ice packs or over-the-counter pain relief for discomfort

Your provider will give you personalized recovery instructions based on your treatment plan.

When to Contact Your Vein Specialist

You should contact your provider if you experience increasing pain, significant swelling, redness, warmth, fever, or symptoms that worsen rather than improve. These signs may indicate a complication that requires evaluation.

Is Radiofrequency Ablation Right for You?

RFA is an effective treatment option for many patients with varicose veins and chronic venous insufficiency, but it may not be appropriate for everyone. A comprehensive vein evaluation, including ultrasound imaging, is needed to determine the best treatment approach.

At BASS Vein Center, our vein specialists perform radiofrequency ablation and other advanced vein treatments. We explain expected results, possible side effects, recovery timelines, and verify insurance benefits before treatment begins.