Chronic obstructive pulmonary disease (COPD) is a progressive lung condition that makes it difficult to breathe. It is primarily caused by long-term exposure to harmful substances, such as cigarette smoke and air pollution. COPD includes two main conditions: chronic bronchitis, which involves inflammation of the airways, and emphysema, which damages the air sacs in the lungs. Symptoms of COPD often include persistent cough, shortness of breath, and wheezing. While there is no cure, treatments like medications, pulmonary rehabilitation, and lifestyle changes can help manage symptoms and improve quality of life for those affected by this disease.