This document provides an overview of cerebrovascular accidents (CVAs), also known as strokes. It defines CVAs, describes the blood supply to the brain, and classifies the major types of strokes as ischemic (caused by reduced blood flow) or hemorrhagic (caused by bleeding). It discusses the causes, risk factors, clinical presentation, progression, and management of different stroke subtypes, including transient ischemic attacks, infarction, and intracerebral hemorrhage.