Chronic Bronchitis Chronic Cough Chronic Mucous Bronchitis Persistent Bronchitis Long-Term Bronchial Inflammation Chronic bronchitis is a type of Chronic Obstructive Pulmonary Disease (COPD) characterized by persistent inflammation of the bronchial tubes, leading to a chronic cough and production of mucus over a period of at least three months per year for two consecutive years. This condition results in narrowed airways and impaired airflow, causing difficulty in breathing and frequent respiratory infections.