common obstructive lung diseases
Chronic obstructive pulmonary disease (COPD) is one of the most common lung diseases. Having COPD makes it hard to breathe. There are two main forms of COPD: 1  Chronic bronchitis, which involves a long-term cough with mucus. 2  Emphysema, which involves damage to the lungs over time.
Chronic obstructive pulmonary disease (COPD) is a chronic inflammatory lung disease that causes obstructed airflow from the lungs. Symptoms include breathing difficulty, cough, sputum production and wheezing. It's caused by long-term exposure to irritating gases or particulate matter, most often from cigarette smoke.