This document provides information about pneumonia in children, including definitions, etiology, signs and symptoms, diagnosis, differential diagnosis, treatment and prevention. It defines different types of pneumonia such as lobar, bronchopneumonia and interstitial pneumonia. It discusses common causes of pneumonia in different age groups. The document also presents a case study of a 1 year old male child admitted with symptoms of cough, fever, difficult breathing and loss of appetite diagnosed with acute pneumonia.