Chronic Obstructive Pulmonary Disease (COPD)
What is Chronic Obstructive Pulmonary Disease (COPD)? Chronic Obstructive Pulmonary Disease (COPD) is a progressive lung disorder characterized by persistent airflow limitation. It mainly includes chronic bronchitis (chronic cough for at least three consecutive months in two consecutive years) and emphysema (destruction of alveoli). The leading cause is long-term exposure to irritants such as cigarette
