Peripheral Artery Disease (PAD) is a common circulatory condition where narrowed arteries reduce blood flow to the limbs, usually the legs. This narrowing is often caused by a buildup of fatty deposits, known as plaque, which can lead to symptoms like leg pain during walking or exercise. If left untreated, PAD can increase the risk of serious complications, including heart attack and stroke. Diagnosis typically involves physical exams and imaging tests, while treatment options may include lifestyle changes, medications, or procedures to improve blood flow. Early detection is crucial for managing the condition effectively.