Bronchitis

Bronchitis is an inflammation of the mucous membranes of the bronchi (the larger and medium-sized airways that carry airflow from the trachea into the more distal parts of the lung parenchyma). Bronchitis can be divided into:
1. Acute
2. Chronic
Acute bronchitis is characterized by the feeling of cough or small sensation in the back of the throat. It can be with or without the sputum (mucus that is expectorated, or “coughed up”, from the respiratory tract). Acute bronchitis is one of the most common types of lung infection. It can occur at any age.
Chronic bronchitis a type of COPD, which involves a cough that produces sputum for 3 months for 2 consecutive years.