What is a bronchitis?

Bronchitis is an inflammation of the mucus membranes of the bronchial tubes (the main air passages connecting the trachea or windpipe to the lungs) which causes a persistent cough and produces considerable phlegm. It is usually caused by a viral or bacterial infection. It is aggravated by exposure to smoke, dust, allergens, strong fumes or chemical irritants. Acute bronchitis is characterized by sudden onset and short duration (It usually clears up in a few days). ...

 

Bronchitis is an inflammation of the bronchi, the large airways inside the lungs. (Bronchiolitis is the inflammation of the bronchioles, the small airways. ) This inflammation often leads to increased mucus production in the airways. Bronchitis is generally caused either by a virus or by exposure to irritants such as dust, fumes, or cigarette smoke. If caused by a virus, the bronchitis will likely be only temporary. ...

 

Bronchitis refers to infection or inflammation of the smaller airways of the respiratory tract. The respiratory tract consists of the lungs and the airways. The airways are composed of larger tube-like structures such as the main wind-pipe (the trachea) and smaller tube-like structures called the bronchi. Although Bronchitis may refer to infection or inflammation of the bronchi, for the context of this discussion, Bronchitis refers to infection of the bronchi.