Peripheral artery disease (PAD) is a form of arteriosclerosis, more commonly known as hardening of the arteries. PAD is a condition in which the large- and medium-sized arteries that bring blood to the arms and legs become narrowed or clogged, which causes less blood flow to the muscles. This can cause pain or cramping in the legs during walking that stops during rest. PAD also increases the risk of heart attack, stroke and amputation of the legs. It is a very common condition, especially in people over the age of 50. Screening for PAD often involves an arterial Doppler evaluation, which is a simple test used to see if there is blockage in the arteries. Additionally, ultrasound imaging may be used to see the arteries in the arms and legs. This checks for plaque build-up and shows the physician where and how bad it is. This exam, especially when done with the arterial Doppler evaluation, gives more information that helps with treatment and management decisions. This exam takes approximately 60 minutes.