What is the difference between spider veins and varicose veins?
Spider veins are small red, blue or purple veins in or just under the skin. The NHS calls them usually harmless. They are mostly a matter of how the leg looks.
Varicose veins are larger, raised and twisted. The NHS says they happen when the valves that control the flow of blood in the vein do not work properly, so blood pools and the vein stretches. That makes them a vein problem under the skin, not only a surface one. The two can sit together on the same leg, which is why a leg is worth examining before anyone picks a treatment.
Which doctor should I see in Malaysia?
Here is how I would divide it, as a doctor. This is my reading of how the work is shared, and I have not found a Malaysian regulation that sets it out.
A few small surface veins and no symptoms: a dermatologist, or a doctor who owns the right equipment and examines before offering anything. Aching, heaviness, swelling, itching, colour change in the skin near the ankle, larger bulging veins or a sore that will not heal: a vascular surgeon, because the question is what the veins underneath are doing. The NHS lists these among the reasons to see a doctor about varicose veins.
Whoever you choose, you can check the doctor first. Checking a doctor's MMC number takes a few minutes, and who may perform which procedures is set out separately.
When does a scan come first?
A duplex ultrasound scan uses sound waves to show the veins and which way the blood is moving. It shows whether a valve is leaking, a problem called venous reflux. DermNet advises a duplex scan before treating larger veins, and says veins that show reflux are the most suitable for treatment.
My rule of thumb is that a scan comes first if there are symptoms, swelling, visible varicose veins or skin changes. A leg with only a few fine surface veins and nothing else may not need one, and the treating doctor decides. If a leaking valve keeps feeding the surface veins, treating only the surface can let them come back.
What are the treatment options in plain terms?
Compression. Special stockings squeeze the leg to help blood move upward. The NHS says they ease swelling and pain and are usually offered when procedures are not suitable or not needed. They do not remove veins.
Sclerotherapy. A solution is injected into the vein, the vein wall becomes inflamed and the vessel fades over weeks to months. DermNet says treatments may be repeated at six to twelve week intervals. Staining or brown pigmentation, bruising and small clots in the treated vein are known effects, and rarer problems include allergy, ulcers and deep vein thrombosis. The NHS describes a foam version for varicose veins when heat treatment is not suitable.
Surface laser. A vascular laser aims at the red pigment in blood. DermNet notes it can be tried when vessels are too fine to inject. Heat that lands in skin pigment is a particular concern in the darker skin tones common in Malaysia, which is worked through in why this clinic does not offer IPL or a vascular laser.
Treating the reflux underneath. The NHS calls endothermal ablation usually the first choice for varicose veins. A thin catheter goes up the vein and radiofrequency or laser heat closes it, under local anaesthetic, usually as a day case. Surgery to tie off and remove the vein is kept for when simpler procedures are not suitable.
The NHS also says varicose veins do not always need treatment. Choosing to leave a leg alone is a reasonable decision once it has been examined.
What does The Retreat Clinic offer for leg veins?
Nothing. The Retreat Clinic does not treat spider veins or varicose veins. There is no sclerotherapy here, no IPL machine and no vascular laser. The laser in the clinic is a picosecond laser aimed at pigment, described on the PicoSure page, and no setting turns it into a vein device.
What I can do is look at the leg, ask about symptoms, and tell you which kind of specialist suits what I see. If it is a leg vein, the right person is a vascular surgeon or a dermatologist who treats veins.
Which leg signs cannot wait?
A hot, painful, swollen calf, usually in one leg, needs a doctor the same day. The NHS lists throbbing pain in one leg, usually the calf or thigh, swelling in one leg and red, blue or darkened skin as signs of a deep vein clot. Shortness of breath or chest pain on top of those signs can mean the clot has reached the lungs, and that is a hospital emergency department visit straight away.
Also see a doctor promptly for a varicose vein that bleeds, a sore on the leg that has not healed after 2 weeks, or skin around the ankle that is turning dark, hard or itchy. The NHS lists these as complications of varicose veins.
A calm way to begin
Most leg veins are not dangerous. The useful first step is a doctor looking at the whole leg, not the one vein you can see.
Common questions
Which doctor treats spider veins in Malaysia?
For small surface veins with no symptoms, a dermatologist or a doctor who owns the right equipment and examines the legs first is the usual route. If the legs also ache, swell, itch or show skin changes, a vascular surgeon and a duplex scan come first. This is a general medical reading of how the work is divided, not a Malaysian regulation.
Is a spider vein the same as a varicose vein?
No. The NHS describes spider veins as small red, blue or purple veins that are usually harmless, and varicose veins as larger, raised and twisted. A varicose vein can come from a failed valve in the vein, so it is worth a scan.
What is a duplex ultrasound scan of the leg?
It uses sound waves to show the veins and the direction blood flows in them, which tells a doctor whether a valve is leaking. DermNet advises one before treating larger veins.
Does The Retreat Clinic treat spider veins or varicose veins?
No. The clinic does not offer sclerotherapy, an IPL machine or a vascular laser, and does not treat leg veins. Dr Ong can examine a leg and tell you which kind of specialist suits what he finds.
When is a swollen leg an emergency?
A hot, painful, swollen calf, usually in one leg, needs a doctor the same day because it can be a clot. Shortness of breath or chest pain with it needs a hospital emergency department straight away.
Sources
- NHS, Varicose veins overview. Read 14 November 2026 Defines varicose veins as widened veins that look swollen and twisted under the skin, and spider veins (thread veins) as small red, blue or purple veins that are usually harmless and differ from varicose veins. Lists aching, heaviness, itching, colour change, dry scaly skin and swollen ankles as symptoms. Advises seeing a doctor for pain, itching or swelling, worsening veins, or a leg sore that has not healed after 2 weeks, and lists skin changes, venous leg ulcers and clots as complications.
- NHS, Varicose veins: treatment. Read 14 November 2026 Describes self-help, compression stockings, endothermal ablation (radiofrequency or laser heat through a catheter, usually the first choice), foam sclerotherapy (offered if ablation is not suitable) and surgery. States that varicose veins do not always need treatment and that bleeding varicose veins need urgent attention.
- NHS, Varicose veins: causes. Read 14 November 2026 Varicose veins happen when the valves that control the flow of blood in the vein do not work properly. Lists being a woman, older age, excess weight, pregnancy, long periods of standing or sitting, family history and previous deep vein thrombosis as risk factors.
- NHS, Deep vein thrombosis (DVT). Read 14 November 2026 Symptoms are throbbing pain in one leg, usually the calf or thigh, swelling in one leg, red, blue or darkened skin around the painful area, and swollen veins. Urgent advice is needed if DVT is suspected. Shortness of breath or chest pain with these symptoms can signal a pulmonary embolism and needs emergency care.
- DermNet, Sclerotherapy. Read 14 November 2026 A sclerosant is injected into the vein and the vessel disappears over weeks to months. Treatments may be repeated at six to twelve week intervals. A duplex ultrasound scan should be done first for larger veins, and veins showing reflux are the most suitable. Side effects include staining or brown pigmentation, bruising, superficial clots and capillary matting, and rarely allergy, ulceration and deep vein thrombosis. Very fine vessels may be too small to inject, where a vascular laser may be considered.
Disclosure: In September 2026 Cynosure Lutronic, which makes XERF and PicoSure, gave Dr Ong its XERF Innovation Leader and XERF Clinical Visionary awards at the Malaysian launch of XERF. How he thinks about ties like these: The quiet we kept: what shapes what your doctor recommends.
