In the later stages of the disease, shortness of breath also occurs along with cough.
Mucous secretions are often infected and the patient must take antibiotics.
Although the patient usually feels better with the use of bronchodilators, in some cases, the narrowing of the airways in chronic bronchitis is irreversible.
Chronic bronchitis is usually diagnosed by a careful evaluation of the medical history (especially regarding smoking), and physical examination of the patient.
Airway obstruction is determined by spirometry.
A chest radiograph of a person with chronic bronchitis may appear normal in appearance, although longitudinal shadows can sometimes be seen in the lungs.
The treatment of chronic bronchitis is to widen the airways as much as possible and treat the infection. Smoking must be stopped to prevent further damage.