Peripheral artery disease (PAD) is a condition in which the arteries that supply blood to the limbs, usually the legs, become narrowed or blocked by fatty deposits. This reduces blood flow to the affected limb, leading to symptoms such as pain, numbness, and cramping. PAD is a common condition, especially in people with risk factors such as smoking, diabetes, high blood pressure, and high cholesterol levels. Treatment involves lifestyle changes, medications, and sometimes procedures to restore blood flow.