Peripheral Artery Disease is one of those conditions that hides in plain sight. It doesn’t announce itself with a heart attack or a stroke. It creeps in slowly, through a little leg cramp here, a cold foot there. And by the time most Americans get diagnosed, the disease has already been working for years.
Research search shows PAD now affects more than 22 million people in the U.S. as of 2025, roughly double the 11 million cases recorded back in 1995. Older estimates from federal health data put the number closer to 10 million Americans aged 40 and older. Newer analysis puts it plainly: PAD now affects about 1 in every 14 U.S. adults. That’s why the U.S. has observed September as PAD Awareness Month since 2007. Medical societies use the month to push one simple message: get checked. The PAD Pulse Alliance, a coalition of leading vascular and cardiology groups, runs its “Get a Pulse on PAD” campaign every September. It points out that PAD is the largest cause of nontraumatic amputations in the United States. Vascular clinics across the country also use the month to offer free or low-cost screenings, because early detection really is the difference between a manageable condition and a lost limb.
So let’s break down what PAD actually is, why it happens, and how to catch it early.
What is Peripheral Artery Disease?
Peripheral Artery Disease happens when the arteries that carry blood to your limbs get narrowed or blocked. It mostly hits the legs. Blood flow drops, and your muscles and tissues don’t get the oxygen they need. Walk a few blocks, and your calf starts to ache. Rest a minute, and it eases off. That’s the classic pattern.
PAD isn’t just a leg problem, though. It’s a warning sign for your whole cardiovascular system. If plaque is clogging your leg arteries, there’s a good chance it’s building up near your heart and brain too. That’s part of why PAD is linked to higher rates of heart attack and stroke.
Causes of Peripheral Artery Disease
PAD comes down to one basic problem: something is blocking or narrowing your arteries. Most of the time it’s slow plaque buildup. Sometimes it’s a sudden clot, an injury, or even how your blood vessels are shaped from birth. Knowing the cause helps doctors pick the right treatment for PAD.
Main Cause
Atherosclerosis: This is behind almost every case of PAD. Fatty deposits, cholesterol, and other substances build up along artery walls over years. The artery gets stiff and narrow. Blood struggles to get through. It’s the same process that causes heart attacks, just happening in your leg arteries instead of your coronary arteries.
Less Common Causes
Blood clots: A clot can form inside an artery or travel there from somewhere else in the body and suddenly block blood flow. This tends to come on fast, unlike the slow buildup of atherosclerosis.
Physical injury: Trauma to a limb, from an accident, a fall, or even certain medical procedures, can damage an artery and disrupt blood flow.
Inflammation and infection: Certain inflammatory conditions and infections can inflame blood vessel walls. Over time, this damage can narrow the artery, similar to how plaque does.
Unusual anatomy: Some people are born with blood vessels that don’t follow the usual path or structure. This is rare, but it can compress or restrict blood flow even without any plaque involved.
Major Risk Factors
Smoking: This is the single biggest risk factor you can control. Smoking damages artery walls and speeds up plaque buildup. Smokers can develop PAD years earlier than non-smokers.
Diabetes: High blood sugar damages blood vessels over time. People with diabetes face a much higher risk of PAD and develop more severe symptoms.
High blood pressure Constant high pressure wears down artery walls, making them more prone to plaque buildup and narrowing.
High cholesterol: Excess cholesterol is the raw material for plaque. The higher your levels, the faster arteries can clog.
Age: Risk climbs steadily after age 50 and climbs even faster after 65. Arteries naturally stiffen with age, and plaque has had more years to accumulate.
Obesity and inactivity: Extra weight strains the cardiovascular system, and a sedentary lifestyle makes it worse. Together, they push up blood pressure, cholesterol, and diabetes risk.
Genetics: If PAD, heart disease, or stroke runs in your family, your risk goes up too, even if your lifestyle is healthy.
Early Signs of Peripheral Artery Disease
PAD symptoms are easy to identify. A cramp here, cold feet there—most people blame it on age or a long day. But these small clues, especially when they show up together, are your body’s early warning system. Catching them early can mean the difference between pills and a hospital stay.
Intermittent Claudication: This is the hallmark symptom. Pain, cramping, or heaviness in the calf, thigh, or buttock that shows up during walking and fades with rest. It happens because your muscles aren’t getting enough blood during activity.
Temperature Differences: One foot or leg feels noticeably colder than the other. This happens because reduced blood flow means less warmth reaching that limb.
Physical Changes in the Leg: Hair loss on the legs or feet and toenails that grow slower or look brittle are both signs that tissue isn’t getting enough blood and nutrients.
Skin Appearance: Skin on the affected leg may look pale, shiny, or bluish. In more advanced cases, it can look thin and tight.
Weak Pulses: A doctor may check the pulse in your foot or ankle and find it faint or missing entirely. This is a direct sign that blood flow downstream is restricted.
Slow-Healing Sores: Cuts, blisters, or sores on the feet or lower legs that take much longer than usual to heal, or don’t heal at all, are a red flag. Poor circulation means the body can’t deliver what it needs to repair tissue.
Treatment Options for Peripheral Artery Disease
The good news is PAD is manageable and reversible in its early stages. Treatment usually starts simple, with lifestyle changes and medication, and only moves toward procedures or surgery when the disease is more advanced or symptoms are severe.
Lifestyle Changes: Quitting smoking is the single most impactful step anyone with PAD can take. Structured exercise therapy, particularly supervised walking programs, actually trains your body to use blood flow more efficiently. A heart-healthy diet low in saturated fat helps slow plaque buildup. Managing weight takes pressure off your entire cardiovascular system.
Medications: Statins lower cholesterol and help stabilize existing plaque. Blood thinners reduce the risk of clots forming in narrowed arteries. Blood pressure drugs protect artery walls from further damage. Other medications target symptom relief, helping ease the pain of claudication so patients can walk further and stay active.
Minimally Invasive Procedures: Angioplasty and stenting involve threading a small balloon into the blocked artery to widen it, often followed by placing a stent to keep it open. Atherectomy uses a specialized device to shave or remove plaque directly from the artery wall. Both are outpatient options with shorter recovery than open surgery.
Surgery: Bypass surgery reroutes blood flow around a severely blocked section of artery using a graft. Endarterectomy involves surgically removing plaque buildup from inside the artery. These are typically reserved for more severe or advanced blockages that haven’t responded to other treatments.
Conclusion
Peripheral Artery Disease (PAD) is common, it’s costly, and it’s dangerous when ignored. It’s also one of the most manageable cardiovascular conditions out there when caught early. A leg cramp on your evening walk might just be a leg cramp. Or it might be your arteries asking for help. This September, during PAD Awareness Month, take the signs seriously. Talk to specialized providers at SAAK Health and get screened if you’re at risk. Don’t wait for the pain to become unbearable before you act.
FAQs
Is PAD dangerous?Yes. Left untreated, PAD leads to non-healing wounds, tissue death, and even amputation in severe cases. It also signals a much higher risk of heart attack and stroke, since the same plaque buildup often affects arteries throughout the body, not just the legs.
When to seek specialized care for peripheral artery disease?See a vascular specialist if you notice leg pain while walking that eases with rest, a sore or wound on your foot that isn’t healing after a couple of weeks, sudden numbness or coldness in a limb, or if you have major risk factors like diabetes or a smoking history along with any leg symptoms. Sudden, severe leg pain with numbness needs emergency care right away, as it could mean a complete blockage.
What is the best sleeping position for peripheral artery disease?Many people with PAD find relief sleeping with their legs slightly lower than their heart, since gravity helps blood reach the feet. Keeping the head of the bed slightly elevated, rather than propping the legs up on pillows. It eases nighttime leg pain for some patients. Comfort varies person to person, so it’s worth discussing with your doctor if leg pain is disrupting your sleep.
What are the most common tests for peripheral artery disease?The ankle-brachial index, or ABI, is the standard first test. It compares blood pressure in your ankle to blood pressure in your arm. Doctors may also use duplex ultrasound to visualize blood flow or, in more complex cases, CT angiography or MRI angiography to get a detailed map of the blocked arteries before planning treatment.
