COPD (Emphysema and Chronic Bronchitis): From Diagnosis to Treatment Manual of Medicine COPD Resources Chronic Obstructive Pulmonary Disease Vaping and COPD E cigarette use increases risk for developing major respiratory diseases Chronic obstructive pulmonary disease (COPD) is a chronic, progressive lung disorder characterized by persistent airflow limitation that is not fully reversible. It develops gradually, most often due to long term exposure to harmful