Chronic obstructive pulmonary disease (COPD) is a group of progressive and chronic lung diseases that make it difficult to breathe. Emphysema and chronic bronchitis are the two main conditions contributing to COPD.
The main symptoms of COPD are shortness of breath, wheezing, and chest tightness. COPD is typically caused by smoking but can also be caused by exposure to secondhand smoke, air pollution, or dust.
Fortunately, treatment can help to improve the symptoms and slow the progression of the disease, although there is no cure.