Chronic obstructive pulmonary disease (COPD) is a chronic inflammatory lung disease that causes obstructed airflow from the lungs. Emphysema and chronic bronchitis are the two most common conditions that contribute to COPD.
Cystic fibrosis is an inherited disorder that causes
severe damage to the lungs, digestive system and other
organs in the body. Cystic fibrosis affects the cells
that produce mucus, sweat and digestive juices.