Dive into a comprehensive lecture on gastrointestinal (GI) bleeding, exploring its classification, etiology, pathophysiology, clinical features, diagnosis, and treatment. Learn to differentiate between upper and lower GI bleeds, understand the most common causes, and examine the associated pathophysiology and clinical manifestations. Gain insights into diagnostic approaches and treatment strategies for GI bleeds, as well as potential complications. Benefit from detailed explanations, illustrations, and a structured approach to understanding this critical medical condition.