This expanded text consists of 10 sections with a total of 133 chapters. It begins with a comprehensive review of developmental pathways and phases. The development and assessment of symptoms are then quickly dissected, leading the reader to child and adolescent syndromes. Each section reviews history, epidemiology, etiology and pathogenesis, differential diagnosis, and treatment. Historical perspectives provide a link to the rich history of psychiatry. Each chapter is augmented with case presentations highlighting the complex presentations seen in clinical practice. Chapter 52, on attention deficit hyperactivity disorder, is an outstanding example. The clinical description of the disorder is rich in detail. The discussion of treatments is inclusive, well rounded, and thought provoking.