Endovenous laser ablation for varicose veins, decoded

01 Is this operation for you?

Start here, not with the technique.

Laser ablation treats a vein that is leaking backwards — usually the great or small saphenous vein — confirmed on a duplex ultrasound scan done while you are standing. It is offered for aching and heaviness, swelling that worsens through the day, itching or eczema over the ankle, skin darkening or hardening, bleeding from a varix, repeated thrombophlebitis, and venous ulcers that will not heal.

The important question is not whether you have varicose veins. It is whether your varicose veins are what is causing your symptoms.

The compression test — the single most useful thing on this page

Wear a properly fitted graduated compression stocking for two weeks, and raise your legs when you rest. Then ask yourself honestly whether the symptom you most want gone was better on those days.

Symptoms that ease with compression and elevation are the ones likely to improve after treatment. Pain that does not respond at all usually has another source — a spine problem, an arthritic knee or hip, a nerve, or a foot condition — and treating the veins will not fix it. Patients who skip this test are the ones most likely to be disappointed by a technically perfect operation.

02 What is actually done

The operation, step by step

It is a day-care procedure, usually under local anaesthetic, and you walk out the same day.

Your leg is scanned again on the table and the vein is marked.
A needle puncture near the knee or calf gives access to the vein — no cut, no stitch.
A fine laser fibre is threaded up inside the vein under ultrasound guidance, its tip positioned a safe distance from the deep vein.
Dilute local anaesthetic is injected all around the vein along its length. This numbs it, protects the skin and nerves from heat, and squeezes the vein onto the fibre. It is the part that feels like pressure and takes the longest.
The laser is fired as the fibre is withdrawn, sealing the vein shut along its course.
Bulging surface tributaries are usually dealt with in the same sitting, by tiny stab avulsions or by injecting foam.
A stocking or bandage goes on before you stand up.

Afterwards

Walk for 20–30 minutes the same evening and every day after. Compression is worn continuously for the first three days, then during the day for about six weeks. Most people return to desk work within two to three days and to heavy physical work in one to two weeks. Avoid long-haul flights for the period your surgeon specifies.

03 What it can realistically give you

Relief of aching, heaviness and swelling — the benefit is most reliable in exactly those symptoms that responded to compression.
Healing of a venous ulcer, and a lower chance of it returning, when the ulcer is genuinely venous in origin.
An end to bleeding varices and repeated attacks of phlebitis.
A visibly better leg — though see the expectation gap below before you rely on this.
Day-care treatment with no general anaesthetic, no groin incision and a fast return to normal life, compared with old-style stripping.

04 What can go wrong

Ordered the way you should always see risk written: the frequent things first, so they are not buried under the dramatic ones.

Common — expect these

Bruising along the treated vein
A pulling, tight, cord-like sensation as the sealed vein contracts, often worst in weeks two and three
Soreness and mild swelling
Patches of skin numbness

Less common

Phlebitis in treated surface tributaries — red, hard, tender lumps that settle over weeks
Brown pigmentation over treated veins, usually fading over months
Persisting numbness from irritation of a nerve running beside the vein

Uncommon

Infection at a puncture or avulsion site
Clot extending from the treated vein towards the deep system, needing monitoring or blood thinners
Deep vein thrombosis
Failure of the vein to seal, or reopening later, requiring further treatment

Extremely rare

Pulmonary embolism
Skin burn
Permanent nerve injury with lasting numbness or altered sensation
Arteriovenous fistula

05 What else you could do

Option	What it involves	Its limits
Radiofrequency ablation	Same idea, heat delivered by radiofrequency instead of laser	Very similar results; availability and cost differ
Glue (cyanoacrylate) ablation	Medical adhesive seals the vein; no tumescent anaesthetic, minimal compression needed	Costs more; a small number develop an inflammatory reaction to the adhesive
Foam sclerotherapy	Foamed drug injected to close the vein	Higher chance of the vein reopening; often needs repeat sessions; good for tributaries and recurrences
Open surgery (stripping)	The vein is tied and removed through incisions, usually under general anaesthetic	More bruising and a longer recovery; still appropriate in some anatomy
Compression and lifestyle	Graduated stockings, elevation, weight and exercise	Controls symptoms while worn; does not correct the leaking vein
Doing nothing	Watch and wait	Reasonable if symptoms are mild; skin damage, bleeding and ulceration become more likely as the years pass

If you cannot walk well or cannot wear stockings, the choice changes

Laser ablation depends on two things after the operation: walking, and compression. If you also have a bad back, sciatica or an arthritic knee or hip, the first question is whether that condition can be brought under control — with physiotherapy or medical treatment — before the veins are treated. If it can, it should be, and laser remains a good choice.

If it cannot, and you will not realistically be able to mobilise or tolerate compression afterwards, the sensible switch is to glue ablation, whose result is not compromised by limited compression. This is the kind of decision that should be made in a consultation, not in a package brochure.

06 The expectation gap

Why some people are unhappy after a perfect operation

Three reasons, over and over:

They expected a cosmetic result and received a medical one. Sealing the leaking trunk fixes the physiology. Thread veins and spider veins are a separate problem needing separate sessions, often paid for separately.
The pain was never venous. This is the compression test, skipped. The veins are gone; the knee, the back or the nerve is not.
They believed it was permanent. Venous disease is a tendency, not an event. New varicosities appear over the years in a meaningful minority of people, and a further treatment does not mean the first one failed.

07 Questions to ask your surgeon

Which vein is leaking on my scan, and was the scan done with me standing?
Which of my symptoms do you expect to improve, and which do you expect to remain?
Are my tributaries being treated in the same sitting, or will that be a second appointment and a second bill?
Given my knee, back and mobility, am I better suited to laser or to glue?
How long must I wear compression, and what if I cannot tolerate it?
What is your plan if the vein reopens, and who pays for the re-treatment?
When can I fly home safely?

This page is patient education, not medical advice, and it does not describe your particular case. Decisions about your treatment should be made with a doctor who has seen your scan and examined you.

Endovenous laser ablation for varicose veins.

Start here, not with the technique.

The compression test — the single most useful thing on this page

The operation, step by step

Afterwards

If you cannot walk well or cannot wear stockings, the choice changes

Why some people are unhappy after a perfect operation

Start with a conversation, not a quotation.