Chronic Obstructive Pulmonary Disease (COPD) is a progressive lung disease characterized by airflow limitation, primarily caused by factors such as tobacco smoke, air pollution, and genetic abnormalities. Key symptoms include chronic cough, sputum production, and dyspnea, with management strategies focused on symptom relief, disease progression prevention, and improving quality of life through interventions such as smoking cessation, medication, and pulmonary rehabilitation. The document outlines the importance of thorough assessment and patient education in managing COPD effectively.