Types and stages of COPD: Symptoms, causes, and more

cop4dCOPD can cause coughing that produces large amounts of a slimy substance called mucus .It can also cause breathing problems, shortness of breath, chest thtness,Chronic obstructive pulmonary disease (COPD) is estimated to affect 32 million persons in the United States and is the third leading cause of death in this country. Patients typically have