Causes of bronchitis
Acute bronchitis is characterized by severe cough with or without the production of sputum/mucus. This type of bronchitis is usually caused by virus. Generally, a person suffering from upper respiratory tract infection like cold or flu develops acute bronchitis. Acute bronchitis is rarely caused by bacteria. On the other hand chronic bronchitis is a type of chronic obstructive pulmonary disease caused from recurrent injury to the airways. This injury is usually caused by inhaled irritants from cigarette smoking, polluted air or occupational exposure to irritants.
Written by: Healthplus24 team
Date last modified: August 29,2009
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