Acute bronchitis

Acute bronchitis is the inflammation of bronchial mucosa caused by virus or bacteria infection. It is a common and frequently occurring disease in infants and young children. It is often secondary to upper respiratory tract infection and the early manifestation of pneumonia. This disease mostly involves trachea and bronchus at the same time, so it should be correctly named acute tracheobronchia. The clinical feature is cough with (or without) increased bronchial secretions.