Laser Treatment for Varicose Veins

Introduction

If you have been told that you have varicose veins and that laser treatment may be an option, this guide is written for you. It explains what laser treatment for varicose veins is, how it compares with other options, what to expect on the day of the procedure, and how recovery usually unfolds in the weeks and months afterwards.

Varicose veins are the bulging, rope-like veins that appear on the legs when the small valves inside leg veins stop working properly. For many people they cause aching, heaviness, swelling, itching, or skin changes — not just a cosmetic concern. Over the last two decades, the way doctors treat troublesome varicose veins has changed significantly. Traditional open surgery to strip out the vein has largely been replaced, in many centres, by techniques that close the vein from the inside using heat or chemicals. Laser treatment — known clinically as endovenous laser ablation, or EVLA — is one of the most established of these newer techniques.

This article walks you through the procedure as a planning resource. It does not replace the conversation with the vascular specialist who will examine your legs, review your ultrasound, and discuss what is appropriate in your situation.

What Is Laser Treatment for Varicose Veins?

Laser treatment for varicose veins is a minimally invasive procedure that uses heat from a laser fibre to close a faulty leg vein from the inside. The full clinical name is endovenous laser ablation, often shortened to EVLA or EVLT (endovenous laser therapy). “Endovenous” simply means inside the vein, and “ablation” means to destroy or seal off tissue.

The treatment is usually performed on the saphenous veins — the long superficial veins that run up the inside of the leg. When the valves in these veins fail, blood pools downward instead of flowing efficiently back to the heart. This backward flow is called venous reflux, and it is the engine behind most varicose veins.

During EVLA, a thin laser fibre is passed inside the affected vein under ultrasound guidance. Controlled bursts of laser energy heat the vein wall, causing it to shrink and seal shut. Once the vein is closed, blood is naturally rerouted through other, healthy veins. The treated vein is gradually absorbed by the body over several months.

Unlike traditional vein-stripping surgery, EVLA does not involve cutting the leg open or physically removing the vein. It is performed through a single small puncture, usually under local anaesthesia with a special technique called tumescent anaesthesia (more on this later). Most patients walk out of the clinic the same day.

Why Is Laser Treatment Performed?

Laser treatment is offered when varicose veins are causing symptoms, when there are signs of more advanced venous disease, or when other treatments have not been enough. Major vascular societies, including the Society for Vascular Surgery, the American Venous Forum, the European Society for Vascular Surgery, and the UK’s National Institute for Health and Care Excellence (NICE), now describe endovenous thermal ablation — which includes laser treatment — as a first-line option for saphenous vein reflux, ahead of open surgery in most cases.

Doctors typically consider laser treatment when one or more of the following are present:

• Aching, heaviness, throbbing, or burning in the legs that worsens with standing
• Visible bulging veins that are uncomfortable or interfere with daily life
• Ankle swelling related to vein reflux
• Skin changes such as darkening, eczema, or hardening around the ankle
• A healed or open venous leg ulcer
• Bleeding from a varicose vein
• Superficial vein thrombosis (a clot in a surface vein) linked to varicose veins
• Symptoms that have not improved enough with compression stockings and lifestyle measures

Treatment is generally not offered for veins that are entirely silent and purely cosmetic without any underlying reflux on ultrasound. The decision rests on the duplex ultrasound findings together with how much the veins are affecting you.

Who Is a Candidate?

Whether laser treatment is appropriate is a clinical decision based on examination and a duplex ultrasound scan of the leg veins. This scan shows which veins are involved, which way the blood is flowing, and whether the deep veins are working normally.

Laser treatment is most often considered for adults with:

• Reflux in the great saphenous vein or small saphenous vein
• A vein that is reasonably straight and not too close to the skin surface
• A vein diameter within the range the laser system can effectively treat
• No active deep vein thrombosis
• The ability to walk and to wear compression stockings afterwards

It may be less suitable, or another technique may be preferred, when:

• The vein is very tortuous (extremely twisted) along its main length
• The vein lies very close to the skin, where heat could cause a burn
• There is a history of deep vein thrombosis affecting the leg’s deep venous system
• You are pregnant — treatment is usually deferred until after delivery and the postnatal period
• You have severe peripheral arterial disease, making compression therapy unsafe
• You are unable to walk after the procedure for medical reasons

Laser treatment is one of several options for varicose veins. Major societies recommend that you understand the alternatives before deciding.

Conservative management

For mild symptoms, or when a procedure is not appropriate or not wanted, conservative measures are the starting point. These include graduated compression stockings, regular walking, leg elevation when resting, weight management, and avoiding long periods of standing or sitting still. Conservative care does not make the underlying valves work again, but it can reduce symptoms and slow progression.

Radiofrequency ablation (RFA)

Radiofrequency ablation uses heat generated by radio waves instead of laser light. It is delivered through a similar catheter inside the vein. Studies comparing EVLA and RFA show broadly similar long-term closure rates, with some evidence that RFA may cause slightly less bruising and post-procedure discomfort in the first week. Choice between the two often depends on what the centre offers and the surgeon’s preference.

Foam sclerotherapy

Sclerotherapy involves injecting a chemical solution — in foam form for larger veins — that irritates the vein lining and causes it to collapse and close. Ultrasound-guided foam sclerotherapy can be used on the main saphenous veins or on residual varicosities after a thermal procedure. It is often used for veins that are too twisted for a laser fibre and for spider veins and smaller surface varicosities.

Mechanochemical ablation (MOCA) and cyanoacrylate (glue) closure

These are non-thermal, non-tumescent techniques. MOCA uses a rotating wire combined with a chemical agent. Cyanoacrylate closure uses a medical adhesive (similar in concept to tissue glue) to seal the vein. Because neither uses heat, they avoid the small risk of nerve injury that exists with thermal methods and do not require the tumescent anaesthesia injections used during EVLA. They are newer options and not available everywhere.

Traditional surgery (high ligation and stripping)

This is the older surgical approach, in which the top of the saphenous vein is tied off through a groin incision and the vein is then physically pulled out through a second cut at the knee or ankle. It is performed under general or regional anaesthesia and typically involves a longer recovery. Vascular societies still describe a role for surgery in selected cases, but for most patients with saphenous reflux, endovenous techniques are now the first choice.

Ambulatory phlebectomy

This is a technique to remove bulging surface varicosities through tiny stab incisions. It is often combined with laser treatment of the main saphenous vein in the same session or as a staged procedure, so that both the source of reflux and the visible bulging veins are addressed.

Whether laser treatment, an alternative thermal method, glue closure, or sclerotherapy is the best fit depends on the anatomy of your veins, your symptoms, the equipment available, and the experience of your treating team.

How Laser Treatment Compares with Vein Stripping

Several large studies and society reviews have compared endovenous laser ablation with traditional surgical stripping. The general patterns reported are:

• Closure of the target vein at one year is similar or slightly better with EVLA
• Pain in the first week tends to be less after EVLA
• Return to work and normal activity is generally faster after EVLA
• Visible scarring is minimal with EVLA (a single puncture site rather than incisions)
• The need for general anaesthesia is avoided in most EVLA cases
• Long-term quality-of-life improvements appear comparable between the two

These patterns are part of the reason endovenous techniques have become the dominant approach in many countries.

Preparing for Laser Treatment

Preparation is straightforward but important. Your vascular team will give you instructions tailored to your situation. Common elements include:

The pre-procedure consultation

You will have a clinical examination and a duplex ultrasound scan. The scan maps out which veins are affected and how they connect. The plan for treatment — which vein or veins to treat, whether to combine EVLA with phlebectomy or sclerotherapy, and which leg to treat first if both are involved — comes from this scan.

Medications

Tell the team about all medications you take, including blood thinners, hormonal treatments, and supplements. Many people are asked to continue their usual medications, but blood thinners may need adjustment. Do not stop any medication without being told to do so.

Fasting

Because laser treatment is usually performed under local anaesthesia, you will often be allowed a light meal beforehand. Centres that offer sedation may ask you to fast for a few hours. Follow your centre’s specific instructions.

What to bring and wear

Wear loose clothing that fits easily over a compression stocking. Bring the stocking with you if the clinic asks you to obtain one in advance. Arrange for someone to accompany you home if you are having any sedation.

Shaving and skin preparation

You may be asked to avoid shaving the leg for a day or two before the procedure to reduce the chance of small skin infections. The clinic will clean the leg with antiseptic before the procedure.

What Happens During Laser Treatment

Step 1: Positioning and ultrasound mapping

You lie on the procedure table. The doctor uses ultrasound to mark the path of the vein on your skin, identifying where the laser fibre will enter and where it will end.

Step 2: Local anaesthesia at the entry site

A small amount of local anaesthetic is injected at the entry point, usually near the knee or lower leg. A tiny needle is then used to enter the vein, and a thin guide wire is passed into it.

Step 3: Inserting the laser fibre

A narrow sheath (a hollow tube) is passed over the wire into the vein. The laser fibre is then threaded through the sheath until its tip sits at the top of the section being treated. The position is confirmed with ultrasound.

Step 4: Tumescent anaesthesia

This is the step that often surprises patients. A large volume of dilute local anaesthetic mixed with saline is injected along the length of the vein, just outside it. This fluid does three important things at once: it numbs the area, it presses the vein walls onto the laser fibre to improve closure, and it acts as a heat shield protecting nearby nerves, skin, and other structures. You will feel several small pinpricks during these injections.

Step 5: Delivering the laser energy

Once everything is positioned and the area is numb, the laser is activated. The fibre is slowly withdrawn down the length of the vein, delivering controlled heat as it moves. You may feel warmth or a slight pulling sensation but generally no sharp pain. The vein shrinks and seals as the fibre passes.

Step 6: Treating side branches (if planned)

If bulging surface varicosities are to be removed at the same session, the doctor may perform a phlebectomy — small stab incisions through which the bulging veins are gently teased out — or inject foam sclerotherapy into them. This adds 15 to 30 minutes to the session.

Step 7: Compression and getting up

The entry puncture is so small that it usually does not need a stitch. A dressing is applied, and a compression stocking is fitted over the leg. You are asked to get up and walk for about 15 to 30 minutes before going home. Walking encourages blood flow in the deep veins and reduces the risk of clot formation.

Recovery and Healing

The first 24 to 48 hours

You walk out of the clinic the same day. The leg may feel tight, sore, or bruised. Most people manage discomfort with simple painkillers such as paracetamol; non-steroidal anti-inflammatories may also be advised. You are asked to walk regularly — short, frequent walks are better than long ones — and to avoid sitting or standing still for long periods. The compression stocking stays on day and night for the first 24 to 48 hours, according to your team’s instructions.

The first one to two weeks

Most people return to office-based work within a few days. Bruising along the line of the treated vein is common and can look more dramatic than it feels. A pulling, cord-like sensation along the inner thigh or calf as the vein shrinks is normal and usually peaks around days 7 to 14. You typically continue daytime compression for one to two weeks. Showering is usually allowed within a day or two; baths, swimming, and saunas are normally avoided for about two weeks.

Weeks two to six

Bruising fades. Bulging surface veins begin to flatten, sometimes over months as the body reabsorbs them. You can return to more vigorous exercise once the team confirms healing, typically after one to two weeks. Long-haul travel within the first two to four weeks is usually discussed with your doctor because of the small clot risk.

Follow-up

A follow-up duplex ultrasound is commonly performed in the first few weeks to confirm that the treated vein has closed and that no clot has spread into the deep system. A second appointment a few months later checks the longer-term result and identifies any residual veins that might benefit from a small top-up treatment, often with sclerotherapy.

Risks and Complications

Laser treatment has a strong safety record, but no procedure is risk-free. Knowing the possible complications helps you recognise them early.

Common and usually minor

• Bruising along the treated vein, fading over one to three weeks
• Tightness or a pulling sensation along the vein, lasting one to four weeks
• Mild skin discoloration over the vein, usually temporary
• Numbness or tingling in a small patch of skin, more common when the vein is treated below the knee, usually improving over weeks to months
• Lumpiness over residual varicosities, which often softens with time

Less common

• Superficial thrombophlebitis — inflammation and a tender clot in a surface vein, usually managed with continued compression, walking, and anti-inflammatory medication
• Skin burn from the laser, which is rare when tumescent anaesthesia is used correctly
• Infection at the entry site, usually mild and treatable with antibiotics
• Allergic reaction to local anaesthetic or skin preparation, uncommon

Rare but serious

• Deep vein thrombosis (DVT) — a clot in the deep veins, including a specific entity called endothermal heat-induced thrombosis where the closure extends a short distance into a deep vein. Routine post-procedure ultrasound is partly aimed at catching this early.
• Pulmonary embolism — a clot travelling to the lungs, very rare
• Nerve injury causing more persistent numbness, particularly when treating veins below the knee

Contact your treating team promptly if you develop sudden calf or thigh swelling, severe leg pain disproportionate to the procedure, redness spreading along the leg, fever, shortness of breath, or chest pain. The last two require emergency assessment.

Outcomes and What to Expect Long Term

Endovenous laser ablation has been studied extensively over the last two decades. The patterns reported across major studies are encouraging but realistic.

• Closure of the treated vein in the first year is achieved in a high proportion of cases, with results broadly comparable to other thermal techniques
• Symptom relief — less aching, heaviness, swelling, and itching — is reported by most patients in the weeks after treatment
• Visible bulging veins flatten and fade over months
• Quality-of-life scores improve and the gains are typically sustained over years

That said, varicose veins are part of a long-term venous condition. Closing one faulty vein does not change the underlying tendency to develop venous disease. Over a span of years:

• Some patients develop new varicose veins in previously unaffected areas
• Some develop recurrence near the original treatment site through small connecting veins (a process called neovascularisation)
• Top-up treatments — often sclerotherapy for smaller residual veins — are not unusual

This is one reason long-term follow-up and lifestyle measures are recommended even when the initial treatment has gone well.

Life After Laser Treatment

Most people return to normal life within one to two weeks. To get the best long-term result and reduce the chance of new varicose veins, doctors and vascular societies commonly recommend:

• Regular movement. Walking is the simplest and most effective intervention. The calf muscles act as a pump for the veins, and using them regularly improves circulation.
• Avoiding long periods of standing still or sitting still. If your work involves either, taking short walking breaks helps.
• Leg elevation. Elevating the legs for short periods at the end of the day reduces swelling.
• Weight management. Excess weight increases venous pressure in the legs.
• Compression stockings. Some patients are advised to wear them during long flights, long days on their feet, or in pregnancy.
• Skin care. Keeping the skin of the lower legs moisturised reduces the risk of eczema and skin breakdown in those with longer-standing venous disease.
• Stopping smoking, which has wider vascular benefits.

These measures do not guarantee that no new varicose veins will appear, but they support the result of treatment and overall leg health.

Choosing a Treating Team

Outcomes from endovenous laser ablation depend partly on operator experience and on the quality of the duplex ultrasound assessment. When meeting a potential treating team, it is reasonable to ask:

• How often the team performs endovenous treatments
• Whether the ultrasound assessment is performed by experienced vascular sonographers or vascular surgeons themselves
• Which techniques they offer (laser, radiofrequency, glue, sclerotherapy, phlebectomy), so that the plan is matched to your anatomy rather than to what the centre happens to have
• What the follow-up arrangements are, including post-procedure ultrasound
• How they handle residual or recurrent veins later

Good rapport and clear answers to your questions are reasonable signals. Seeing more than one specialist is acceptable, particularly if you feel uncertain about the proposed plan.

Frequently Asked Questions

Is laser treatment for varicose veins painful?

The procedure itself is usually well tolerated under local and tumescent anaesthesia. Most patients describe pressure or warmth rather than sharp pain. The tumescent injections cause brief pinprick discomfort. In the days afterwards, the leg often feels bruised and tight along the treated vein. Simple painkillers usually manage this.

Will I be awake during the procedure?

Yes, in most centres. Laser treatment is generally performed with you awake and able to talk to the team. Some centres offer light sedation if you are anxious. General anaesthesia is rarely needed.

How soon can I walk and drive?

You are expected to walk immediately after the procedure — this is part of the treatment. Driving is usually possible within a day or two for short journeys, provided you can perform an emergency stop without pain. Your team will give specific advice.

When can I return to work?

Most people doing office or desk-based work return within one to three days. Jobs involving long periods of standing or heavy physical work may need a longer break, often one to two weeks. Discuss your specific work with your treating team.

Will the bulging veins disappear straight away?

The main vein is sealed during the procedure, but the bulging surface veins shrink gradually over weeks to months as the body reabsorbs them. If they remain prominent after several months, additional treatments such as sclerotherapy or phlebectomy may be considered.

Can varicose veins come back after laser treatment?

Yes, new varicose veins can appear over the years, even after a successful initial treatment. This is because the underlying tendency to venous disease remains. Lifestyle measures and follow-up with your vascular team help manage this.

Is laser treatment safe during pregnancy?

Treatment is generally deferred until after pregnancy and the postnatal period. Many pregnancy-related varicose veins improve on their own in the months after delivery. Compression stockings and conservative care are the usual approach during pregnancy.

Can both legs be treated at the same time?

This depends on the extent of the disease, the anatomy, and the policies of the treating centre. Some teams treat both legs in one session; others prefer to space the procedures out so each leg can recover.

Will I need to wear compression stockings forever?

No. Compression is typically advised for one to two weeks after the procedure, sometimes longer in specific cases. Long-term wear is generally only recommended if there is ongoing venous insufficiency, skin changes, or a history of leg ulcers.

Does laser treatment treat spider veins?

EVLA treats the larger underlying veins. Spider veins — the fine red or purple thread-like veins at the skin surface — are usually treated separately, most commonly with sclerotherapy or surface laser, and often in a different session.

Conclusion

Laser treatment for varicose veins, or endovenous laser ablation, is a well-established minimally invasive option for closing faulty leg veins. It avoids the cuts and longer recovery of traditional vein stripping, is usually performed under local anaesthesia in a single session, and allows most patients to return to their usual routines within days. Major vascular societies describe it as a first-line option for saphenous reflux, alongside radiofrequency ablation and, increasingly, non-thermal techniques such as glue closure and mechanochemical ablation.

At the same time, varicose veins are part of a long-term venous condition. Treatment addresses the current problem but does not change the underlying tendency, so follow-up, lifestyle measures, and the possibility of further treatments over the years are part of the picture. Whether laser treatment is the right option for you, and which technique your specialist recommends, depends on the duplex ultrasound findings, your symptoms, your anatomy, and a careful conversation with your vascular team.