That pain when you walk could be more serious than you think. It could be a sign of peripheral artery disease (PAD), a condition in which a narrowing of the arteries results in reduced blood flow to the arms or legs. When the arms or legs — PAD typically affects the legs — don't receive enough blood flow to keep up with demand, it can cause pain when walking and other symptoms. PAD is usually a sign of a buildup of fatty deposits in the arteries, known as atherosclerosis.
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