Bronchitis causes

Overview
Acute bronchitis is a self-limited inflammation of the large airways of the lung that is characterized by cough with or without sputum that last several days or weeks (10 days). It is one of the commonest causes of outpatient admission worldwide. Virus are thought to be the commonest cause of acute bronchitis. Influenza A and B, parainfluenza, respiratory synctial virus, corona virus are the commonest involved pathogens. Some atypical bacterias like mycoplasma, chlamydiae and bordetella pertusis are also found to cause acute bronchitis.

Acute Bronchitis
The following things can make bronchitis worse:
 * The cause of acute bronchitis depend on several factors, for instance season of the year (winter and fall), vaccination level, age and immune status of the patient
 * Viruses are considered to be the commonest cause of acute bronchitis. The common virus involved are influenza A and B, parainfluenza, respiratory syncytial virus, coronavirus, adenovirus and rhinovirus.
 * Human metapneumovirus is also found to cause bronchitis.
 * Some atypical bacterias are also found toact as causative factors for bronchitis namely bordetella pertusis, Chlamydia pneumonia and mycoplasma pneumonia.
 * Air pollution
 * Allergens
 * Certain occupations (such as coal mining, textile manufacturing, or grain handling)

Chronic Bronchitis
Chronic bronchitis is a long-term condition. People have a cough that produces excessive mucus. To be diagnosed with chronic bronchitis, you must have a cough with mucus most days of the month for at least 3 months.