This document provides an overview of peripheral vascular diseases (PVD), including definitions, pathophysiology, causes, clinical examination, investigations, management, and specific conditions like atherosclerosis, thromboangitis obliterans (Buerger's disease), Raynaud's disease, acute arterial disease, and gangrene. It describes the clinical features, risk factors, and pathology of different types of PVD and provides guidance on evaluating patients through history, physical examination, tests, and setting treatment plans which may involve lifestyle changes, medications, procedures like angioplasty, or surgeries such as bypass or amputation.