This document provides an introduction to pediatrics. It defines pediatrics as the branch of medicine dealing with the care of children and adolescents. Pediatricians specialize in evaluating, diagnosing, treating children, and ensuring their proper growth, development and nutrition. The document outlines the different periods of child growth from neonate to adolescent and their key features. It discusses the history of pediatrics and highlights India's high child mortality rates, with the majority of under-5 deaths being caused by pneumonia, diarrhea, and other infectious diseases. National programs aimed at improving child health in India are also summarized.