What Is Bronchitis? Causes, Symptoms, Treatment & Recovery Time

What Is Bronchitis: Bronchitis illustration showing inflamed airways and mucus in the lungs.

Updated September 21, 2026 — Written by Dr. Shabbir Hussain, BPT, Registered Physiotherapist | Clinical Rehabilitation Specialist Quick Answer Bronchitis occurs when the airways leading to your lungs become inflamed, often following a viral infection. Acute bronchitis usually improves on its own, but the cough can last for several weeks. Treatment focuses on relieving symptoms, … Read more