It summarizes guidance on how to manage – and when to refer – children and adolescents presenting with common complaints and conditions. It includes information to enable primary health care providers to coordinate the continued care of children and adolescents with long-term conditions and diseases managed by specialists. Preventive and promotive measures from the newborn period to adolescence include advice on the timing and content of well-child visits, the promotion of early childhood development and health messages for adolescents. This Pocket Book aims to improve the diagnosis and management of common conditions in children and adolescents that can be managed at the outpatient level. It helps to improve the use of laboratory and other diagnostic measures and the rational use of essential drugs and equipment.