Chronic bronchitis is a chronic inflammation of the bronchi (medium-size airways) in the lungs. It is generally considered one of the two forms of chronic obstructive pulmonary disease (COPD), the other being emphysema. It is defined clinically as a persistent cough that produces sputum (phlegm) and mucus, for at least three months per year in two consecutive years.
Read more about Chronic Bronchitis: Signs and Symptoms, Causes, Diagnosis, Treatment, Acute Exacerbations
Famous quotes containing the word chronic:
“Only then can the chronic inattention
Of our lives drape itself around us, conciliatory....”
—John Ashbery (b. 1927)