Peripheral artery disease (also called peripheral arterial disease) is a common circulatory problem in which narrowed arteries reduce blood flow to your limbs.

When you develop peripheral artery disease (PAD), your legs or arms — usually your legs — don't receive enough blood flow to keep up with demand. This may cause symptoms, such as leg pain when walking (claudication).

Peripheral artery disease is also likely to be a sign of a buildup of fatty deposits in your arteries (atherosclerosis). This condition may narrow your arteries and reduce blood flow to your legs and, occasionally, your arms.

You often can successfully treat peripheral artery disease by exercising, eating a healthy diet and quitting tobacco in any form.

• Critical limb ischemia.This condition begins as open sores that don't heal, an injury, or an infection of your feet or legs. Critical limb ischemia occurs when the injuries or infections progress and cause tissue death, sometimes requiring amputation of the affected limb.