Varicose Veins and Heart Trouble: Is There a Link?

To a layperson, varicose veins and heart problems may seem related. After all, arteries and veins are both part of the same circulatory system, the network of vessels that carries blood through the body. 

The distinction? They perform different functions. 

Arteries carry oxygen-rich blood away from the heart to the rest of the body, while veins carry oxygen-poor blood back to the heart. Varicose veins are a venous problem, not an artery problem, which is why they don't affect the heart the way a blocked artery would.

That said, if you’re dealing with symptoms of vein disease, including bulging veins, aching legs, or ankle swelling, it’s worth understanding how venous disease and heart conditions can relate to each other. Some symptoms overlap, which is exactly why people get confused. And a few complications of untreated varicose veins are important to understand, even though they don’t involve your heart directly, because they can impact your overall health.

Center for Vein Restoration (CVR) vein specialists use duplex ultrasound to determine whether vein disease is behind your leg symptoms, then treat vein problems using minimally invasive, outpatient care. If the ultrasound reveals that venous disease is not the cause of your leg discomfort, they refer you to the right specialist.

Varicose Veins and Heart Problems: What’s the Connection?

Your circulatory system has two important jobs. Arteries carry oxygen-rich blood away from your heart to the rest of your body. Veins carry that blood back. Varicose veins happen when tiny one-way valves inside your leg veins stop working well. Blood that should be moving upward pools instead, and the vein stretches and bulges under the pressure.

Heart disease is a different mechanism entirely. According to the American Heart Association, it usually involves plaque building up inside your arteries, restricting blood flow to your heart muscle. That process doesn’t happen in your veins, and having varicose veins doesn’t mean plaque is building up in your arteries too.

Varicose veins and heart disease do share a set of risk factors. Age, obesity, a sedentary lifestyle, and smoking all raise your risk for both conditions. That overlap is probably why varicose veins and heart problems get lumped together so often. It’s also a good reason to take care of your cardiovascular health broadly, not because vein disease will turn into heart disease, but because the same habits protect both systems.

Unsure if your leg problems are caused by vein disease? CVR can help:

📋 Take the Vein Assessment

How Do Varicose Veins Form?

Varicose veins are common. About one in three adults develops varicose veins at some point, according to Cleveland Clinic, and about one in 20 adults have chronic venous insufficiency (CVI), a more advanced form of the same underlying problem.

Here’s what happens inside the vein: Small valves are supposed to snap shut after each heartbeat pushes blood upward, preventing it from flowing back down. When those valves weaken due to age, genetics, pregnancy, or prolonged standing or sitting, blood begins to pool. The vein wall stretches to accommodate the extra volume, and over time it bulges and twists just under the skin.

Some people notice only the visible, rope-like veins at first, with no pain. But the same valve failure that causes the bulging can progress over time, and a handful of related complications are worth watching for. These complications include skin changes, slow-healing sores on the lower legs, and an increased risk of blood clots.

Varicose Veins, Blood Clots, and DVT Risk

If you have varicose veins, your risk of a blood clot forming in a vein deep inside your leg is higher than average, according to Cleveland Clinic. That deep clot is called deep vein thrombosis, or DVT.

DVT doesn’t always cause dramatic symptoms. Sometimes there’s leg swelling, warmth, or tenderness. Sometimes there’s very little to notice at all, which is part of why it’s often not taken as seriously as it should. A DVT clot can break loose and travel to the lungs, a complication called pulmonary embolism (PE). That’s a medical emergency.

This is why CVR doesn’t treat visible varicose veins as a wait-and-see issue. A duplex ultrasound can show whether blood flow in the deeper veins is affected, not just the surface veins you can see. For more on symptoms and treatment, CVR’s guide to deep vein thrombosis goes into further detail.

📞 Questions? Speak with a Patient Representative directly. Call 240-249-8250

Can Varicose Veins Cause Venous Ulcers?

Skin changes are another reason not to ignore varicose veins. Over time, the pressure from pooled blood can damage the surrounding skin. Varicose veins and chronic venous insufficiency are among the most common causes of venous, or stasis, ulcers, open sores that form on the lower leg, according to Johns Hopkins Medicine.

These sores aren’t like an ordinary cut. Venous ulcers don’t heal easily, and they can become infected, according to Cleveland Clinic, which is part of why catching venous insufficiency early matters. Skin in the area may also thicken, darken, or feel itchy long before an ulcer ever forms, so those changes are worth mentioning to a doctor even if there’s no open sore yet.

Leg Swelling: Is It Your Veins, Your Heart, or Something Else?

Leg and ankle swelling has a long list of possible causes, and vein disease is only one. CVR physicians diagnose and treat the venous causes of leg symptoms. They don't treat heart, kidney, or liver conditions, and when an evaluation points to one of those instead of vein disease, a CVR physician will tell you so and refer you to the specialist who does treat it. 

Here's what else can cause symptoms that look similar to vein disease, so you know why that distinction matters.

• Heart failure. When your heart can't pump as efficiently as it should, fluid can back up into your legs, ankles, and feet. Swelling in the feet, ankles, legs, and other tissues is a recognized warning sign of heart failure, according to the American Heart Association. Heart-related swelling often shows up in both legs at once and may come with shortness of breath or fatigue.
• Kidney disease. Your kidneys normally clear excess fluid and sodium from your body. Edema can occur in the legs, feet, or ankles when kidney function declines, according to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK).
• Certain medications. Some common prescriptions list swelling as a side effect, including calcium channel blockers, certain antidepressants, hormone therapies, NSAIDs, and steroids, according to MedlinePlus (NIH). If swelling started around the same time as a new prescription, that's worth mentioning to whoever prescribed it.
• Peripheral artery disease (PAD). PAD is essentially the opposite problem from vein disease. It's caused by plaque building up in the arteries that carry blood to the legs, and it more commonly causes leg pain during walking (claudication) than swelling.
• Liver disease. Liver conditions can also cause fluid retention in the legs, through a mechanism similar to kidney-related swelling.

None of this is meant to be a self-diagnosis checklist. It's meant to explain why a physician evaluation, rather than a guess based on symptoms alone, is the reliable way to sort out what's actually going on. 

CVR physicians use duplex ultrasound to assess whether vein disease is causing your symptoms. If it is, treatment stays within CVR's scope of minimally invasive, outpatient vein care. If it isn't, CVR refers you to the physician who treats the actual cause, rather than treating it directly.

When to See a Vein Specialist

A few signs suggest it's time for an evaluation rather than a wait-and-see approach: leg swelling that doesn't go down overnight, aching or heaviness that gets worse as the day goes on, skin discoloration around the ankles, a sore that's slow to heal, or visible veins alongside any of the above.

Read CVR's complete guide to varicose vein treatment for more about these procedures.

You don't need to know whether it's your veins, your heart, or something else before you book an appointment. That's what the evaluation is for. Center for Vein Restoration physicians run this diagnostic work every day: a duplex ultrasound shows whether vein disease is the cause, and if it isn't, you'll be referred to the specialist who treats what it is. 

Either way, you leave Center for Vein Restoration with an answer instead of a guess.

Frequently Asked Questions

Q: Can varicose veins and heart problems really be connected?
A: Not directly. Varicose veins form in your leg veins, while heart disease develops in your arteries and heart muscle. They do share risk factors like age, obesity, inactivity, and smoking, which is likely why people assume a stronger connection than actually exists.

Q: Is leg swelling always a sign of heart failure?
A: No. Leg swelling can come from vein disease, kidney or liver conditions, certain medications, or simply from sitting or standing too long. Heart failure is one possible cause among several, which is why a physician evaluation matters more than guessing from symptoms alone.

Q: What’s the difference between varicose veins and DVT?
A: Varicose veins are visible, swollen veins near the skin’s surface. Deep vein thrombosis (DVT) is a blood clot that forms in a vein deeper in the leg and can’t be seen. Having varicose veins raises your risk of developing DVT, but the two aren’t the same condition.

Do varicose veins go away on their own?
A: Varicose veins don’t typically resolve without treatment. The valve damage that causes them doesn’t reverse itself. Compression stockings and lifestyle changes can help manage symptoms, but a vein specialist can explain which treatment options fit your specific situation.

Q: When should I worry about varicose veins?
A: Pay attention to sudden swelling in one leg, warmth or tenderness over a vein, skin discoloration, or a sore that won’t heal. These can point to complications like DVT or venous ulcers and are worth a prompt evaluation rather than waiting.