Bronchitis happens when your bronchial tubes become swollen and inflamed. Your bronchial tubes are responsible for delivering air from your windpipe to your lungs. Bronchitis makes it harder for air ...

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 ...

You may experience symptoms such as cough, sleepiness, breathlessness, chest condition, and slow walking with emphysema or bronchitis. A spirometry test is one way to distinguish the type of lung ...