When Leg Pain on Walks Could Be Peripheral Artery Disease — and Why Some People Miss the Signs

Many people blame leg discomfort on aging, being out of shape, or overdoing it. Sometimes that is true. But sometimes the problem is lower-extremity peripheral artery disease, or PAD, a condition in which narrowed arteries reduce blood flow to the legs.

That matters because PAD is not only a leg problem. It can make walking harder, reduce independence, and signal a higher risk of heart attack and stroke.

What changed in the evidence?

An April 22, 2025, peer-reviewed report in JAMA highlighted an important point: PAD can affect walking ability even when people do not describe the textbook symptom pattern. The report was a Viewpoint, not a treatment trial. It discussed evidence from a specific group of 460 patients with PAD in Chicago who had not recently had a revascularization procedure.

In that group, 20% said they had no exertional leg symptoms. But during a six-minute walk test, 42% of those patients developed leg symptoms and 22% had to stop and rest. In plain language, some people appeared less limited when asked about symptoms than they did when their walking was actually measured.

That does not mean people with PAD always have no symptoms. It also does not mean every vague leg complaint is PAD. What it suggests is that symptoms may be underrecognized, underreported, or not described as classic claudication, the cramping leg pain many people associate with blocked leg arteries.

What PAD is, in plain language

PAD usually happens when plaque builds up in arteries that carry blood to the legs and feet. When muscles need more blood during walking or climbing stairs, narrowed arteries may not keep up. That can lead to pain, heaviness, fatigue, or slowing down.

Classic PAD symptoms often include cramping, aching, tightness, discomfort, or fatigue in the buttock, thigh, calf, ankle, or foot with walking or exercise that improves with rest. American Heart Association and Mayo Clinic guidance also notes that some people notice broader signs, such as a colder foot, color changes, numbness, weakness, slow-growing toenails, or sores that heal poorly.

Some people may also gradually cut back their activity without realizing it. If you have unconsciously started walking more slowly, taking more breaks, or avoiding hills and stairs because your legs feel heavy or tired, that is worth mentioning to a clinician.

Why people miss the signs

PAD does not always feel dramatic. Symptoms can be mild, come on only with exertion, or be mistaken for something else. The American Heart Association notes that people may confuse PAD with arthritis or other common causes of leg discomfort. Muscle, joint, spine, nerve, vein, and foot problems can also cause leg symptoms, which is one reason self-diagnosis is risky.

There is another issue: if people naturally slow down or shorten their walks, they may avoid triggering the classic pain pattern. That can make the condition seem less noticeable, even while walking endurance is declining.

Who is at higher risk in the United States?

Risk goes up with age, especially after 65. Smoking is one of the strongest risk factors, and that includes people who used to smoke, not only current smokers. Risk is also higher in people with diabetes, high blood pressure, high cholesterol, chronic kidney disease, obesity, or other cardiovascular disease.

Current National Heart, Lung, and Blood Institute patient information also emphasizes that many people with PAD have symptoms other than classic leg pain, or no obvious symptoms at all, even though their cardiovascular risk is still higher.

Why delayed recognition matters

PAD can shrink the distance a person can walk, reduce confidence with activity, and make daily tasks harder. Over time, that can affect exercise habits, work, errands, and quality of life.

Just as important, PAD is often a sign of atherosclerosis elsewhere in the body. According to the American Heart Association, people with PAD have a higher risk of coronary artery disease, heart attack, and stroke. In more severe cases, poor blood flow can lead to nonhealing wounds, infection, gangrene, or amputation.

That is why repeated leg symptoms should not be brushed off as “just getting older,” especially in someone with smoking history, diabetes, or other vascular risk factors.

When to talk with a clinician

Make a routine medical appointment if you notice any of these patterns:

Recurring leg pain, cramping, heaviness, tightness, or fatigue with walking or stairs
Walking getting slower, shorter, or harder over time
Needing more frequent stops to rest on walks
One foot feeling colder than the other
Changes in skin color
Numbness, weakness, or pins-and-needles feelings in a leg or foot
Foot or leg sores that heal slowly or do not heal
Pain in the foot or leg at rest, especially if symptoms worsen when lying down

A clinician may review your symptoms, check pulses, examine the feet and legs, and consider testing such as an ankle-brachial index, a simple comparison of blood pressure in the ankle and arm.

When it is urgent

Seek urgent medical care right away for sudden severe symptoms that could mean a sudden drop in blood flow, sometimes called acute limb ischemia. The National Heart, Lung, and Blood Institute advises calling 911 for sudden loss of feeling, or a foot that suddenly becomes blue, pale, or cold. Sudden severe leg pain, abrupt weakness, or a rapidly changing leg also need immediate attention.

What this means for readers

The practical takeaway is simple: PAD does not always announce itself as classic calf pain on a walk. For some people, the clue is that walking has quietly become harder, slower, or less comfortable over time.

If that sounds familiar, especially if you smoke or used to smoke, or if you have diabetes, high blood pressure, high cholesterol, or known heart disease, it is worth bringing up with a clinician. Not every leg symptom is PAD, but PAD is important to catch because it affects both mobility and overall cardiovascular health.

Sources

This article is for general informational purposes only and is not medical advice. Research findings can be early, limited, or subject to change as new evidence emerges. For personal guidance, diagnosis, or treatment, consult a licensed clinician. For current outbreak or public health guidance, follow your local health department, the CDC, or another relevant public health authority.