Aches and pains are one of the drawbacks of aging. Regardless of your physical condition, some knee, neck, or back pain seems to be unavoidable. Sometimes it’s nothing. Maybe you slept in an awkward position, spent a lot of time on your legs, or really taxed your muscles with a good workout. But other times, it can signify something more serious, particularly if it persists without explanation. If the pain is occurring in your legs, it could signify peripheral artery disease. Peripheral artery disease, or peripheral arterial disease (PAD), happens when plaque accumulates in the arteries of your legs. It happens gradually and limits blood flow to the lower extremities, which can lead to some severe problems. It affects roughly 10 million people in the United States. The symptoms can begin as simple pain when walking or climbing. You may notice you can’t walk very far without some discomfort, and …