Changes

Chronic bronchitis is one type of COPD (chronic obstructive pulmonary disease). The inflamed bronchi produce a lot of mucus. This leads to cough and difficulty getting air in and out of the lungs. [[Cigarette smoking]] is the most common cause. [[Breathing]] in other fumes and dusts over a long period of time may also cause chronic bronchitis. Treatment will help alleviate symptoms, but chronic bronchitis is a long-term condition that keeps coming back or never goes away completely.<ref>http://www.nlm.nih.gov/medlineplus/bronchitis.html</ref>

Chronic bronchitis is one type of COPD (chronic obstructive pulmonary disease). The inflamed bronchi produce a lot of mucus. This leads to cough and difficulty getting air in and out of the lungs. [[Cigarette smoking]] is the most common cause. [[Breathing]] in other fumes and dusts over a long period of time may also cause chronic bronchitis. Treatment will help alleviate symptoms, but chronic bronchitis is a long-term condition that keeps coming back or never goes away completely.<ref>http://www.nlm.nih.gov/medlineplus/bronchitis.html</ref>

==References==

==References==