Chronic Obstructive Pulmonary Disease – Chronic obstructive pulmonary disease (COPD) is a long-term inflammation of the lungs. COPD is generally characterized by difficulty breathing, coughing up phlegm, and wheezing. COPD is a disease that often occurs in active and passive smokers. The two conditions that most often develop into COPD are chronic bronchitis and emphysema . In chronic bronchitis, […]