Chronic bronchitis may differ by the nature of inflammation, the features of bronchial involvement, and the clinical course. Determining the form of the disease helps the doctor select the most effective treatment for chronic bronchitis and measures for the prevention of exacerbations.
By the nature of the inflammatory process, the following are distinguished:
- catarrhal chronic bronchitis — the most common form, which is characterized by inflammation of the mucous membrane of the bronchi with increased formation of sputum;
- purulent chronic bronchitis — is accompanied by the appearance of purulent sputum and more often develops against the background of a bacterial infection.
By the prevalence of bronchial involvement, the disease may be:
- local — the inflammatory process is limited to a certain area of the bronchial tree;
- diffuse — the lesion covers a significant part of the bronchi.
Also, during the course of the disease, the stages of remission and exacerbation are conditionally distinguished. During remission, the symptoms decrease or almost do not bother the patient, whereas during exacerbation the cough intensifies, the amount of sputum increases, and well-being may worsen.