Bronchitis is an inflammation of the bronchial tubes, or bronchi, that bring air into the lungs. Inflammation is a chemical reaction in the body that produces redness, swelling, and pain. When the cells lining the bronchi are irritated, the tiny hairs (cilia) that normally trap and eliminate things from the outside stop working. Formation of material associated with irritation swelling also increases; causing the passages to become clogged. The same viruses that cause colds, often cause acute bronchitis. You can also develop noninfectious bronchitis by being exposed to your own or someone else's tobacco smoke and from pollutants, such as household cleaners and smog. Bronchitis may also occur when acids from your stomach consistently back up into your esophagus and a few drops go into your upper airway, a condition known as gastroesophageal reflux disease (GERD). Workers exposed to certain dusts or fumes may develop occupational bronchitis, an acute disease that generally dissipates when exposure to the nuisance stops.
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You’re considered to have chronic bronchitis if you cough most days for at least three months a year in two consecutive years. Often, however, smokers with chronic bronchitis, cough almost every day, even if it's just to "clear their throats" in the morning. Unlike acute bronchitis, chronic bronchitis is a fragmentary, serious disease. Smoking is the major cause, but air pollution, dust or, toxic gases in the environment or workplace also can contribute to the
You’re considered to have chronic bronchitis if you cough most days for at least three months a year in two consecutive years. Often, however, smokers with chronic bronchitis, cough almost every day, even if it's just to "clear their throats" in the morning. Unlike acute bronchitis, chronic bronchitis is a fragmentary, serious disease. Smoking is the major cause, but air pollution, dust or, toxic gases in the environment or workplace also can contribute to the