Peripheral Arterial Disease (PAD) is the narrowing of peripheral arteries that lead to the legs, arms, stomach, and head. The narrowing of these arteries occurs due to a buildup of plaque within the circulatory system. This buildup leads to a reduction in blood flow and can cause a range of painful and deadly symptoms if left untreated. This disease is more commonly found in the outer extremities of the body, such as your legs. If left untreated, Peripheral Arterial Disease can lead to ischemic rest pain, ulcers, gangrene, and, ultimately, amputations. Patients that are affected by this ailment are also at increased risk for coronary artery disease and carotid artery stenosis, which can lead to heart attack or stroke.