Bronchitis (bron-KI-tis) is a condition in which the bronchial tubes become inflamed. These tubes carry air to your lungs. (For more information about the bronchial tubes and airways, go to the How ...

Bronchitis is inflammation in your bronchial tubes. It can be either acute or chronic. When this inflammation is acute — which means it’s a short-term issue — it may be contagious. Acute bronchitis is ...

Pneumonia is one condition that’s commonly mistaken for bronchitis, as it can be particularly tricky to tell the difference between the two. Both bronchitis and pneumonia are conditions that involve ...