What is peripheral artery disease (PAD)?

Peripheral artery disease (PAD) is a circulatory condition characterized by the narrowing of blood vessels, which results in reduced blood flow to the limbs, particularly the legs. This condition is usually caused by atherosclerosis, where fatty deposits build up on arterial walls, impeding proper blood circulation. The reduced blood flow can lead to symptoms such as leg pain during physical activities, numbness, or weakness. It significantly raises the risk of heart attack and stroke as well, highlighting the importance of managing cardiovascular health. Thus, understanding PAD as primarily affecting blood flow to the limbs aligns it accurately with the nature of this disease as reflected in the correct answer.