Peripheral Arterial Disease: Warning Signs in Your Legs and Feet

Peripheral arterial disease, usually called PAD, is a circulation problem in which narrowed arteries reduce blood flow to the limbs, most often the legs. It is common, especially in older adults and people with diabetes, yet it frequently goes undiagnosed because early symptoms are mild or mistaken for normal aging. Because the feet are at the far end of the circulation, foot and ankle specialists are often among the first to notice the signs. This guide explains what to watch for, who is at risk and how PAD is detected and treated.

What is peripheral arterial disease?

PAD is most often caused by atherosclerosis, a gradual buildup of fatty deposits called plaque inside the artery walls. As plaque accumulates, the arteries narrow and stiffen, and less oxygen-rich blood reaches the muscles, skin and tissues of the legs and feet. The same process that narrows leg arteries can affect the arteries of the heart and brain, which is why PAD is considered an important warning sign for heart attack and stroke risk. It is sometimes described as a “silent” disease because many people have few or no symptoms until it is advanced.

Warning signs in the legs and feet

• Claudication: cramping, aching or tiredness in the calves, thighs or buttocks that starts with walking or climbing stairs and eases after a few minutes of rest.
• Cold feet or legs: one foot or leg that feels noticeably cooler than the other.
• Color changes: pale or bluish skin on the feet, or redness that appears when the legs hang down.
• Slow-healing sores: wounds on the toes, feet or lower legs that take weeks to heal or do not heal at all.
• Skin and nail changes: shiny, thin skin, hair loss on the legs and feet, and slow-growing or thickened toenails.
• Weak pulses: a weak or absent pulse in the feet, which your doctor may detect during an exam.
• Rest pain: burning or aching in the feet or toes while lying down, often relieved by hanging the legs over the side of the bed. This is a sign of more advanced disease.

Some people, particularly those with diabetic neuropathy, may not feel claudication at all. That makes regular foot exams and testing even more important for people with risk factors.

Who is at risk?

Risk increases with age and is higher in people who:

• Smoke or have a history of smoking
• Have diabetes
• Have high blood pressure or high cholesterol
• Have known heart disease or a history of stroke
• Have a family history of vascular disease
• Are physically inactive or carry excess weight

If you have several of these risk factors, it is reasonable to ask your doctor whether PAD screening is right for you, even if you do not have obvious symptoms.

Why early detection matters

Finding PAD early allows time to slow its progression, reduce cardiovascular risk and protect the limbs. Without adequate blood flow, even minor foot injuries can become chronic wounds, and advanced PAD can lead to critical limb ischemia, a serious condition that threatens the leg. For people with diabetes, the combination of poor circulation and reduced sensation makes foot wounds especially dangerous. Early diagnosis helps save limbs and, by prompting attention to heart and stroke risk, can help save lives.

How PAD is diagnosed

Evaluation starts with a medical history and a physical exam, including checking the pulses in your feet and looking at the skin, nails and any wounds. Testing is quick and non-invasive:

• Ankle-brachial index (ABI): blood pressure is measured at the ankles and arms and compared. A lower pressure at the ankle suggests narrowed arteries.
• Doppler ultrasound: sound waves are used to evaluate blood flow through the arteries and identify narrowed areas.
• Pulse volume recordings and toe pressures: these measure blood flow further down the leg and into the toes, which can be helpful when arteries are stiff, as is common in diabetes.

These tests are painless and generally take less than an hour. Select Foot & Ankle Specialists of South Jersey offices provide non-invasive vascular testing in-house, so patients can often be evaluated without a separate trip to another facility.

Treatment options

Lifestyle changes

Quitting smoking is the single most important step for people who smoke. A structured walking program, in which you walk until moderate discomfort, rest and repeat, can improve walking distance over time. Healthy eating, weight management and staying active also support vascular health.

Medications

Your physician may recommend medications to manage blood pressure, cholesterol and blood sugar, and to reduce the risk of blood clots. Some medications are specifically used to improve walking distance in people with claudication.

Procedures to restore blood flow

When symptoms are severe, wounds are not healing or testing shows significant blockages, referral to a vascular specialist may be recommended. Minimally invasive procedures such as angioplasty and stenting, or bypass surgery in some cases, can restore circulation. Coordinated care between podiatrists, vascular specialists and wound care teams is especially important for patients with limb-threatening disease.

Foot protection and wound care

People with PAD should follow careful daily foot care routines, wear protective footwear and have any wound evaluated quickly. Our guide to foot ulcers and wound care explains how chronic wounds are managed.

Expertise close to home

Our practice has a long-standing focus on lower extremity vascular disease. Dr. Frank J. Tursi has lectured nationally on PAD diagnosis and treatment and co-authored articles on PAD in patients with diabetes; you can read more on his consulting page and in our physician profiles.

Questions to ask at your appointment

• Do my symptoms or risk factors suggest I should have vascular testing?
• What do my ankle-brachial index or ultrasound results mean?
• How often should my feet and circulation be rechecked?
• Is a supervised walking program appropriate for me?
• What foot care steps should I take every day to prevent wounds?
• Do I need to see a vascular specialist or cardiologist as well?

Writing your questions down before the visit, along with a list of your medications, helps you make the most of the appointment.

When to get checked

Talk with a healthcare provider if you have leg pain with walking, a foot sore that is slow to heal, color or temperature changes in your feet, or several PAD risk factors. Seek emergency care right away if a leg or foot suddenly becomes cold, pale, painful or numb, as this can signal a sudden blockage.

This article is for general educational purposes and does not replace a diagnosis or treatment plan from a qualified healthcare provider. If you have a medical emergency, call 911.