Synonym: Bronchial Catarrh. Definition: Acute bronchitis is an Acute inflammation of mucous membrane of bronchial tubes characterized by fever, purulent expectoration and loud rhonchi. CLINICAL FEATURES Symptoms Onset acute. Fever. Cough Expectoration Initially Scanty, Difficult, Mucoid. Later on • Copious. • Easy. • Muco-purulent. Soreness . Behind sternum. . Worse coughing. – Tightness of chest. […]