Emphysema is a condition that damages the air sacs in the lungs called alveoli, causing them to lose their elasticity and become enlarged. This makes breathing difficult. The main causes are smoking cigarettes and exposure to air pollution or dust. Symptoms include shortness of breath, coughing, and fatigue. Diagnosis involves medical history, physical exam, chest X-rays, and lung function tests. Treatment focuses on quitting smoking, using inhalers, oxygen therapy, exercise, and lifestyle changes. Managing the condition can help prevent further lung damage and associated complications.