Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs Chronic obstructive pulmonary diseaseUpdated: 2017-06-13OverviewChronic obstructive pulmonary disease (COPD) refers to a group of lung diseases that block airflow and make breathing difficult. Emphysema and chronic bronchitis are the most common conditions that make up COPD.TreatmentsDamage to the lungs from COPD can't be reversed. Treatment can help control symptoms and minimize further damage. © 1998-2019 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use