Varicose Veins

Overview
Epidemiology
Pathophysiology
Etiology and Risk Factors
Clinical Presentation
Diagnosis
Treatment
Complications
Prognosis
Prevention
Recent Research and Advances
Research Papers
Connections
Featured Videos

1. Overview

Varicose veins are the swollen, twisted, rope-like veins you can often see and feel just under the skin, usually on the legs. They look blue, purple, or skin-colored and tend to bulge. They are extremely common — depending on how they are counted, somewhere around 20–30% of adults have them, and the milder spider veins are even more widespread. If you have them, you are in very good company, and in most cases they are not dangerous.

That said, varicose veins are usually not "just cosmetic" either. Many people are told their veins are only a beauty problem and are sent away, when in fact the veins cause real symptoms — aching, heaviness, swelling, itching, restless legs, night cramps — and sit on a spectrum of chronic venous disease that can slowly progress. Understanding that spectrum is the key to this whole topic.

Think of it as a ladder. At the bottom are tiny spider veins (telangiectasias). A step up are true varicose veins. If the underlying pressure problem — called venous reflux — goes on long enough, it can become chronic venous insufficiency (CVI), which brings persistent swelling, brown skin staining (hemosiderin), hardened tissue (lipodermatosclerosis), and at the top of the ladder, slow-healing venous leg ulcers. Most people never climb the whole ladder, but knowing it exists explains why doctors take leg veins seriously.

One thing this page will keep coming back to: varicose veins are not the same as a deep vein thrombosis (DVT), the dangerous clot in the deep leg veins that can travel to the lungs. They are different problems in different vein systems. We will explain how to tell them apart and when leg symptoms are an emergency rather than a nuisance.

2. Epidemiology

Varicose veins are one of the most common medical conditions in the developed world. Large population studies such as the Edinburgh Vein Study and the German Bonn Vein Study found visible varicose veins in roughly 20–35% of adults, with the milder spider/reticular veins present in well over half. More advanced chronic venous insufficiency with skin changes affects a smaller but substantial group — on the order of 5–15% — and active venous leg ulcers affect around 0.3–1% of the adult population at any time, rising with age.

Prevalence climbs steadily with age: vein valves and walls weaken over a lifetime, so the condition is much more common after 50. Women are diagnosed somewhat more often than men, though some studies that look carefully (rather than relying on who seeks cosmetic treatment) find the gap is narrower than the stereotype suggests. The condition carries a real economic and quality-of-life burden — venous ulcers in particular are costly and slow to heal — which is part of why prevention and early treatment matter.

3. Pathophysiology

To understand varicose veins, you only need one mechanical idea: one-way valves. Veins carry blood from the legs back up to the heart, working against gravity. To stop blood from sliding back down between heartbeats, leg veins contain small flap-like valves spaced along their length. When the calf muscles squeeze (the "calf-muscle pump") with every step, blood is pushed upward, and the valves snap shut behind it so it cannot fall back.

In varicose veins, those valves fail to close properly. Blood that should keep moving upward leaks backward and pools — this backward leak is called venous reflux. Pooled blood raises the pressure inside the vein (venous hypertension). Under that sustained pressure the vein wall stretches, the vein gets longer than the space it sits in, and so it buckles into the bulging, tortuous (twisty) rope you see at the skin surface. Once one valve fails, the extra pressure tends to overload the next valve down, which is why the problem often spreads along a vein over time.

The most common starting point is reflux in the great saphenous vein, the long superficial vein running up the inner leg, usually leaking at its top junction near the groin. The same process can affect the small saphenous vein behind the calf or the connecting (perforator) veins.

If venous hypertension persists for years, the high pressure pushes fluid and red blood cells out into the surrounding tissue. The body breaks down those leaked red cells, leaving an iron pigment (hemosiderin) that stains the skin brown around the ankle. Chronic inflammation then hardens and tightens the skin and fat (lipodermatosclerosis), and the fragile, poorly-nourished skin can finally break down into a venous ulcer, classically just above the inner ankle. This is the full chain: failed valves → reflux → high pressure → bulging veins → skin changes → ulcer.

Doctors describe where a person sits on this spectrum using the CEAP classification (Clinical, Etiologic, Anatomic, Pathophysiologic). The clinical part runs from C0 (no visible disease) and C1 (spider/reticular veins), through C2 (varicose veins) and C3 (swelling/edema), to the skin-change stages C4 (pigmentation, eczema, lipodermatosclerosis), C5 (healed ulcer), and C6 (active ulcer). You may see your stage written as something like "C2" in a report — now you know what it means.

4. Etiology and Risk Factors

No single thing "gives you" varicose veins; it is a mix of inherited tendency and life circumstances that load the valves over time.

Family history / genetics — the strongest factor. If both parents had varicose veins, your risk is high; weak or fewer vein valves and stretchier vein walls run in families. This is the single best predictor.
Pregnancy. Pregnancy increases blood volume, relaxes vein walls (via hormones such as progesterone), and the growing uterus presses on the pelvic veins. Many varicose veins first appear or worsen during pregnancy; some improve in the months after delivery, but not all.
Female sex and hormones. Estrogen and progesterone soften vein walls, which is one reason women are affected somewhat more often, though men get varicose veins too.
Age. Valves and vein walls wear and weaken over decades.
Prolonged standing or sitting. Jobs that keep you on your feet for hours with little walking (nurses, teachers, hairdressers, retail, factory work) keep the calf pump idle and pressure high. Long sitting does the same.
Obesity. Excess weight raises pressure in the abdomen and legs and makes the calf pump less effective. See Obesity.
Previous DVT or leg injury. A past deep clot can scar and damage the deep veins and their valves (post-thrombotic syndrome), causing secondary varicose veins. See Deep Vein Thrombosis.
Being tall and possibly chronic constipation/straining are weaker contributors.

A myth worth retiring: crossing your legs does not cause varicose veins, and neither do tight boots or "bad circulation" in the everyday sense. These are comfortable scapegoats but they are not the cause.

5. Clinical Presentation

Varicose veins are often visible — bulging, bluish, twisting cords on the calf, behind the knee, or along the inner thigh. But the symptoms matter as much as the appearance, and people are frequently surprised that their tired, achy legs are a vein problem.

Typical symptoms include:

Aching, heaviness, or a tired/dragging feeling in the legs, classically worse by the end of the day and after long standing, and better after lying down or elevating the legs. This day-end pattern is a hallmark of venous symptoms.
Swelling (edema) around the ankle and lower leg, often leaving a sock mark. See Edema.
Itching over the veins or around the ankle, sometimes with dry, flaky venous eczema.
Night-time leg cramps and an uneasy, fidgety feeling that overlaps with restless legs syndrome.
Burning, throbbing, or tenderness over a prominent vein.

In more advanced disease you may see brown discoloration around the inner ankle (hemosiderin staining), hardened, tight skin (lipodermatosclerosis) that can give the lower leg an "inverted champagne bottle" shape, and eventually an open, weepy, slow-healing venous ulcer near the inner ankle.

How to tell a vein problem from an artery problem. Venous pain tends to be a heavy ache that improves with elevation and walking; arterial pain (from peripheral artery disease) is a cramping calf pain that comes on with walking and eases with rest, with cold, pale, hairless feet. They are opposite in many ways, and the distinction changes treatment — which is exactly why a proper exam and ultrasound matter.

6. Diagnosis

The cornerstone of diagnosis is the venous duplex ultrasound — a painless, radiation-free scan done while you stand. It does two jobs at once: it shows the anatomy of your veins and, by watching blood flow direction, it maps the reflux — which valves are leaking, where, and how badly. Reflux lasting more than about half a second in a superficial vein is considered abnormal. This "reflux map" is what a specialist uses to plan treatment, because it pinpoints the leaking vein that is feeding the bulges.

Duplex ultrasound also rules out a deep vein thrombosis and checks whether the deep venous system is healthy, which is important before treating the superficial veins. A good clinical exam — looking at the legs while standing, feeling the veins, and checking the pulses and ankle–brachial index to exclude significant arterial disease — rounds out the workup. Most people need nothing more invasive than this; CT or MR venography is reserved for complex or pelvic-vein cases.

7. Treatment

Treatment follows a sensible ladder, starting with the simplest, safest measures and moving up only if needed. The good news is that modern treatments are far gentler than the old vein-stripping surgery, and most are now walk-in, walk-out procedures.

Conservative treatment (first, for almost everyone)

Graduated compression stockings. These are the foundation. They are tightest at the ankle and looser up the leg, squeezing the veins to help the calf pump push blood upward and reducing pooling, swelling, and aching. For symptom relief, knee-high stockings around 15–20 or 20–30 mmHg are common; healing a venous ulcer usually needs stronger, properly applied compression. To use them well: put them on first thing in the morning before the leg swells, make sure they are correctly fitted (badly sized stockings dig in and do little good), and replace them every few months as they lose stretch. Compression manages symptoms but does not erase the underlying reflux — it is control, not cure.
Leg elevation. Raising the legs above heart level for 15–30 minutes a few times a day lets gravity drain the pooled blood and visibly reduces swelling.
Exercise and the calf pump. Walking, calf raises, and ankle pumps activate the calf muscles that drive venous return. Movement is one of the best free treatments there is.
Weight management. Reducing excess weight lowers leg pressure and helps the pump work.

Minimally invasive procedures (when symptoms persist or disease is significant)

For symptomatic reflux confirmed on ultrasound, modern endovenous (inside-the-vein) ablation has largely replaced open vein stripping. Instead of surgically removing the vein, a thin catheter is threaded into the faulty vein under local anesthetic and the vein is sealed shut from the inside; the body simply reroutes blood through healthy deep veins. These are outpatient procedures — most people walk out the same day and return to normal activity within a day or two.

Radiofrequency ablation (RFA) and endovenous laser ablation (EVLA/EVLT) use heat to seal the vein. Both have high closure rates (around 90–95% at follow-up) and excellent safety records; randomized trials such as EVOLVeS showed RFA matched surgery with less pain and faster recovery.
Mechanochemical ablation (MOCA) and cyanoacrylate "glue" closure (VenaSeal) are newer, non-thermal options that avoid the heat and the tumescent anesthetic injections. The VeClose trial found cyanoacrylate glue closure non-inferior to RFA. These let some people skip compression stockings afterward.
Sclerotherapy injects an irritant solution (liquid or foam) into smaller varicose veins and spider veins, causing them to scar and close. It is the go-to for the smaller surface veins and for tidying up after ablation. Foam sclerotherapy (including microfoam products) can treat larger veins too.
Phlebectomy (ambulatory micro-removal through tiny nicks) and, rarely now, traditional surgical stripping remain options for particular anatomy.

The large CLASS trial compared foam sclerotherapy, laser ablation, and surgery and found all three relieved symptoms, with laser/surgery giving slightly more durable vein closure — reassuring evidence that there is more than one reasonable path.

Treating venous ulcers

For an active venous leg ulcer, the two pillars are strong, well-applied compression (the single most important factor in healing) plus good wound care. Crucially, the EVRA trial showed that treating the underlying reflux with early endovenous ablation — rather than waiting — makes ulcers heal faster and stay healed longer. So an ulcer is a reason to see a vein specialist promptly, not to keep dressing it indefinitely.

Herbal / supplement option

Horse chestnut seed extract (standardized for aescin/escin) is the best-studied herbal remedy here. A Cochrane systematic review by Pittler and Ernst concluded it provides a modest but real short-term improvement in leg pain, swelling, and itching compared with placebo — honestly, on the order of helping symptoms, not curing the veins. It is reasonably well tolerated. It is a legitimate adjunct for symptom relief, but it does not fix reflux and is not a substitute for compression or a procedure when those are needed.

When to see a doctor promptly

An open sore or ulcer on the lower leg or ankle that will not heal.
Bleeding from a varicose vein (a knocked, thin-walled vein can bleed surprisingly fast — lie down and elevate the leg, press firmly, and seek care).
A hard, red, tender, cord-like vein (superficial thrombophlebitis — a clot in a surface vein), which warrants assessment because it can occasionally extend toward the deep system.
Skin changes: brown staining, hardening, or eczema around the ankle — signs you are climbing the spectrum and should be evaluated before an ulcer forms.
Sudden one-sided calf swelling, warmth, and pain — this can be a DVT and is a same-day emergency, not a varicose-vein flare.

8. Complications

Most varicose veins never cause a serious problem. But understanding the possible complications helps you know what to watch for:

Chronic venous insufficiency (CVI) — persistent swelling and skin damage from long-standing high pressure.
Skin changes — hemosiderin staining, venous eczema, and lipodermatosclerosis.
Venous leg ulcers — the most serious common complication; slow to heal and prone to recurrence without treating the underlying reflux.
Bleeding — from a superficial vein with thin overlying skin, especially in older adults.
Superficial thrombophlebitis — a painful clot and inflammation in a surface varicose vein.
Slightly higher DVT risk — here honesty matters. Varicose veins themselves are not a dangerous clot, and they are a different problem from DVT. However, having significant varicose veins / CVI is associated with a modestly increased risk of deep vein thrombosis. That is a reason to know the DVT warning signs — not a reason to panic about your visible veins.

9. Prognosis

For most people the outlook is good and reassuring. Varicose veins are usually a chronic, slowly changing nuisance rather than a threat to life or limb, and symptoms respond well to compression and lifestyle measures. When a procedure is chosen, modern endovenous treatments have high success rates and quick recovery, and they substantially improve quality of life.

The honest caveats: varicose veins are a chronic, recurrence-prone condition. Treatment closes the current faulty veins, but the inherited tendency remains, so new veins can develop over the years and some people need a touch-up. Treating the leaking vein at its source (rather than only the surface bulges) and continuing sensible habits lowers the chance of recurrence. At the severe end, venous ulcers can be stubborn and tend to come back if the underlying reflux is not corrected — which, again, is why fixing the source matters.

10. Prevention

You cannot change your genes, but you can take real pressure off your leg veins. The theme is simple: keep the calf pump working and keep the legs from pooling.

Move regularly. Walk, do calf raises, flex your ankles — especially if your day involves long sitting or standing. The calf muscle is your second heart for the legs.
Break up prolonged standing or sitting. If your job keeps you on your feet, shift your weight, walk a few steps each hour, and elevate your legs on breaks. If you sit for long stretches or travel, get up and pump the calves.
Wear compression for high-risk situations. Graduated compression stockings are genuinely useful during pregnancy, for standing occupations, and on long flights or drives.
Keep a healthy weight to lower abdominal and leg pressure. See Obesity.
Elevate your legs at the end of the day to drain the pooled blood.
During pregnancy, lie on your left side when resting, stay active, and use maternity compression stockings if veins are appearing.

And to repeat the myth-busting: you do not need to stop crossing your legs — that has not been shown to cause varicose veins.

11. Recent Research and Advances

The biggest change over the last two decades has been the endovenous revolution: heat-based ablation (RFA and laser) replacing open surgical stripping, validated by randomized trials and now standard of care. More recently, non-thermal, non-tumescent techniques — mechanochemical ablation and cyanoacrylate "glue" closure — have matched the older methods in trials like VeClose while reducing the need for anesthetic injections, and sometimes letting patients skip post-procedure compression.

For venous ulcers, the EVRA trial (Gohel et al., 2018) changed practice by showing that early correction of superficial reflux speeds ulcer healing — shifting the philosophy from "treat the wound and wait" to "fix the plumbing early." Guideline bodies (the Society for Vascular Surgery / American Venous Forum, the European ESVS, and the UK's NICE) have all converged on offering endovenous ablation to symptomatic patients rather than reaching first for surgery, and the CEAP classification was updated in 2020 to standardize how disease severity is described and studied. Research continues on refining microfoam sclerotherapy, on which patients benefit most from treating perforator and deep-vein problems, and on the genetics behind why some families are so prone to vein disease.

12. References & Research

Historical Background

Varicose veins and venous ulcers have been described since antiquity — ancient Egyptian, Greek, and Roman physicians, including Hippocrates and the Roman surgeon Celsus, recorded bulging leg veins and ulcers and attempted bandaging and cautery. For most of medical history the leg vein problem was poorly understood. In the late 19th century, Friedrich Trendelenburg linked the disease to reflux at the saphenous junction and introduced surgical ligation, and in the early 20th century vein stripping (most associated with Babcock's stripper, 1907) became the long-standing surgical mainstay for many decades. The field was transformed around the year 2000 by the endovenous revolution: catheter-based radiofrequency and laser ablation, validated by randomized trials, replaced open stripping for most patients, followed by non-thermal glue and mechanochemical techniques and, in the EVRA era, a shift toward early treatment of reflux to heal ulcers.

Key Research Papers

Raju S, Neglen P. Chronic venous insufficiency and varicose veins. New England Journal of Medicine. 2009;360(22):2319-2327.
Eberhardt RT, Raffetto JD. Chronic venous insufficiency. Circulation. 2014;130(4):333-346.
Beebe-Dimmer JL, Pfeifer JR, Engle JS, Schottenfeld D. The epidemiology of chronic venous insufficiency and varicose veins. Annals of Epidemiology. 2005;15(3):175-184.
Eklof B, Rutherford RB, Bergan JJ, et al. Revision of the CEAP classification for chronic venous disorders: consensus statement. Journal of Vascular Surgery. 2004;40(6):1248-1252.
Lurie F, Passman M, Meisner M, et al. The 2020 update of the CEAP classification system and reporting standards. Journal of Vascular Surgery: Venous and Lymphatic Disorders. 2020;8(3):342-352.
Gloviczki P, Comerota AJ, Dalsing MC, et al. The care of patients with varicose veins and associated chronic venous diseases: clinical practice guidelines of the Society for Vascular Surgery and the American Venous Forum. Journal of Vascular Surgery. 2011;53(5 Suppl):2S-48S.
Wittens C, Davies AH, Baekgaard N, et al. Editor's Choice — Management of chronic venous disease: clinical practice guidelines of the European Society for Vascular Surgery (ESVS). European Journal of Vascular and Endovascular Surgery. 2015;49(6):678-737.
Marsden G, Perry M, Kelley K, Davies AH. Diagnosis and management of varicose veins in the legs: summary of NICE guidance. BMJ. 2013;347:f4279.
Lurie F, Creton D, Eklof B, et al. Prospective randomized study of endovenous radiofrequency obliteration (closure procedure) versus ligation and stripping in a selected patient population (EVOLVeS Study). Journal of Vascular Surgery. 2003;38(2):207-214.
Brittenden J, Cotton SC, Elders A, et al. A randomized trial comparing treatments for varicose veins (CLASS). New England Journal of Medicine. 2014;371(13):1218-1227.
Morrison N, Gibson K, McEnroe S, et al. Randomized trial comparing cyanoacrylate embolization and radiofrequency ablation for incompetent great saphenous veins (VeClose). Journal of Vascular Surgery. 2015;61(4):985-994.
Gohel MS, Heatley F, Liu X, et al. A randomized trial of early endovenous ablation in venous ulceration (EVRA). New England Journal of Medicine. 2018;378(22):2105-2114.
O'Donnell TF, Passman MA, Marston WA, et al. Management of venous leg ulcers: clinical practice guidelines of the Society for Vascular Surgery and the American Venous Forum. Journal of Vascular Surgery. 2014;60(2 Suppl):3S-59S.
O'Meara S, Cullum N, Nelson EA, Dumville JC. Compression for venous leg ulcers. Cochrane Database of Systematic Reviews. 2012;(11):CD000265.
Pittler MH, Ernst E. Horse chestnut seed extract for chronic venous insufficiency. Cochrane Database of Systematic Reviews. 2012;(11):CD003230.

Research Papers

Explore the latest peer-reviewed literature on varicose veins and chronic venous insufficiency through these live PubMed searches. Each link opens current results in a new tab.

Connections

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