Peripheral artery disease (PAD) is a circulatory condition in which the arteries that carry blood from the heart to the rest of the body become narrowed or blocked. This can reduce or prevent oxygen-rich blood from reaching the limbs and other organs, leading to a range of symptoms such as cramping, pain and numbness in the legs while walking, poor wound healing and skin discoloration. The primary cause of PAD is atherosclerosis—the buildup of plaque inside artery walls that narrows them and restricts blood flow.
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