Respiratory health: Distinguishing bronchiectasis, bronchitis, and pneumonia

Respiratory conditions such as bronchiectasis, bronchitis, and pneumonia present distinct symptoms and physiological impacts on the lungs.

Bronchiectasis is a chronic condition characterized by the permanent widening of the airways, leading to mucus buildup and frequent infections. It can be caused by severe lung infections, immune system deficiencies, or genetic factors like cystic fibrosis. Key symptoms include a chronic cough with mucus, fatigue, and difficulty breathing during exertion. Diagnosis typically requires high-resolution CT scans.

Bronchitis involves inflammation of the bronchial tubes and can be acute or chronic. Acute bronchitis often follows a viral infection, while chronic bronchitis is a component of COPD, frequently linked to long-term exposure to smoke or irritants.

Pneumonia differs by affecting the alveoli, the tiny air sacs where oxygen exchange occurs. Because it impacts deeper lung tissue, symptoms like high fever, chills, and shortness of breath are often more severe than those of bronchitis. While some cases are mild, pneumonia can require hospitalization.