How is chronic bronchitis characterized?

Chronic bronchitis is characterized primarily by a persistent cough that is accompanied by mucus production. This condition is part of a group of respiratory disorders known as chronic obstructive pulmonary disease (COPD). The persistent cough reflects the inflammation and irritation of the airways that leads to increased mucus secretion, which is a hallmark of chronic bronchitis. Over time, this chronic inflammation can reduce airflow and contribute to respiratory distress.

In individuals with chronic bronchitis, the cough typically lasts for at least three months and occurs over two consecutive years, providing a clear definition of the condition. The production of sputum, or mucus, is a crucial factor that helps differentiate chronic bronchitis from other respiratory conditions, as this symptom is not present in conditions such as asthma or emphysema in the same manner. Thus, the key features of chronic bronchitis — the persistent nature of the cough along with the production of mucus — underscore the pathophysiology of this chronic respiratory condition.