Info Tech Serv. Web Tech Serv. The inflammation is most commonly caused by a virus or bacteria, but can be related to smoking, asthma or inhaling chemicals. Regardless of the cause, there is usually a heavy secretion of mucus that produces the characteristic cough of bronchitis. It may also start without having had a previous illness, and usually lasts from 7 to 10 days.
Acute bronchitis can cause fatigue, fevers, and chest pain.
In rare instances it can progress to pneumonia, a serious lung infection. You may need prescription medication. Chronic Bronchitis Chronic bronchitis is a recurring, persistent, mucus-producing cough that lasts longer than 3 months. In diagnosing chronic bronchitis it is important to rule out heart disease, lung infections, cancer and other conditions so you should see your medical provider if you think you have it.