Peripheral artery disease: leg pain when you walk
Blocked leg arteries are a warning about the heart too
Dr. Camille Roux
Internal medicine physician
In simple terms
Why calf pain appears after a fixed distance, how it is measured, and why walking is the best medicine.
What it is, in plain words
Peripheral artery disease is narrowing of the arteries supplying the legs by fatty plaque. At rest the flow is enough; as soon as you walk, the muscles demand more oxygen than the narrowed artery can deliver and cramp-like pain forces you to stop. It is the same disease process as in the heart arteries, so it flags a high risk of heart attack and stroke.
Signs to look out for
- Cramping pain in calf, thigh or buttock after walking a predictable distance, relieved within minutes of stopping
- Cold, pale foot with weak or absent pulses
- Hair loss on the legs, shiny skin, slow-growing nails
- Pain in the foot at night, relieved by hanging the leg out of bed, in severe disease
- Ulcers or black areas on toes that will not heal
Why it happens
Smoking, diabetes, high blood pressure, high cholesterol, kidney disease and age are the main drivers. Diabetes both accelerates the narrowing and dulls the pain warning, so ulcers can be the first sign.
How doctors confirm it
The ankle-brachial index compares blood pressure at the ankle with the arm; a value below 0.9 confirms the diagnosis. Duplex ultrasound, CT or MR angiography map the blockages if a procedure is considered.
Treatments and solutions
- Complete smoking cessation, which is the single most effective step
- Supervised exercise therapy: walking to the point of pain, resting, repeating, for at least thirty minutes three times a week, which reliably increases walking distance
- Statin therapy, blood pressure control, and antiplatelet medicine such as clopidogrel
- Tight diabetes control and daily foot inspection
- Angioplasty with a stent, or bypass surgery, for disabling symptoms or threatened limb
Living with it day to day
Take care of your feet: well-fitting shoes, no barefoot walking, moisturise but not between the toes, and get any wound seen quickly.
When to seek medical help
Seek urgent care for a suddenly cold, pale, numb and painful leg, or for a foot wound that is spreading or blackening.
This article explains general health information in simple language. It does not replace advice from your own doctor.
The words explained
Medical terms used above, in everyday language.
- Symptom
- A sign you can feel or see that something is wrong, like pain, tiredness or a rash.
- Diagnosis
- The moment a doctor identifies which illness is causing your symptoms.
- Blood pressure
- The force of blood pushing against your artery walls. Too high, over years, damages the heart and vessels.
- Cholesterol
- A fatty substance in the blood. Too much of the 'bad' kind (LDL) can clog arteries.
When should you see a doctor?
- Your symptoms last more than a few weeks or keep coming back.
- They get worse quickly, or stop you doing everyday things.
- You notice sudden pain, breathing trouble, fainting or bleeding — seek urgent care.
- You already take medication and want to change anything about it.
This article explains general health information. It does not replace advice from your own doctor.
Frequently asked questions
- What is Peripheral artery disease: leg pain when you walk?
- Why calf pain appears after a fixed distance, how it is measured, and why walking is the best medicine.
- What are the main symptoms or signs of Peripheral artery disease: leg pain when you walk?
- Common signs vary from person to person. The article above lists the symptoms to watch for, how they progress, and when they need medical attention.
- When should you see a doctor for Peripheral artery disease: leg pain when you walk?
- See a doctor if symptoms last more than a few weeks, get worse quickly, stop you doing everyday things, or if you notice sudden pain, breathing trouble, fainting or bleeding.
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