Chronic obstructive pulmonary disease (COPD) is a chronic inflammatory lung disease that causes obstructed airflow from the lungs.
Symptoms include breathing difficulty, cough, mucus (sputum) production and wheezing. It’s typically caused by long-term exposure to
irritating gases or particulate matter, most often from cigarette smoke. People with COPD are at increased risk of developing heart disease,
lung cancer and a variety of other conditions.