This document provides guidelines for classifying and managing illness in children aged 2 months to 5 years for pneumonia. It outlines 4 classifications: very severe disease, severe pneumonia, pneumonia (not severe), and no pneumonia (cough or cold). For each classification, it describes signs, symptoms, and treatment recommendations. Very severe disease requires hospitalization and intravenous antibiotics. Severe pneumonia is treated as inpatients with intramuscular antibiotics. Pneumonia (not severe) is usually treated at home with oral antibiotics. Cough or cold does not require antibiotics. Special considerations for infants under 2 months are also provided.