Peripheral vascular disease is a collective term within clinical medicine and biomedical research for conditions affecting the blood vessels (arteries, veins, and lymphatics) located outside the heart and brain. As an academic concept and research field, it investigates the pathogenesis, diagnosis, management, and prognosis of these circulatory disorders, predominantly focusing on atherosclerotic disease in the limbs. This area of study is significant due to the substantial public health impact of peripheral vascular conditions, which contribute to considerable morbidity, disability, and mortality, driving ongoing research into improved diagnostic techniques, therapeutic strategies, and preventative measures.