All of them can make you feel breathless. Doctors use stages to describe how severe your COPD is. This system is called the GOLD staging or grading system. Your grade will affect what treatment you ...

(StatePoint) Chronic obstructive pulmonary disease (COPD) is a long-term lung disease that makes it hard to breathe. A leading cause of disability and death in the United States, more than 12.5 ...