The document provides an overview of several child and adolescent disorders including pervasive developmental disorders (PDD), attention deficit hyperactivity disorder (ADHD), and eating disorders. It describes the key characteristics and diagnostic criteria for autism, Asperger's syndrome, Rett's syndrome, Down syndrome, ADHD, conduct disorder, anorexia nervosa, bulimia nervosa, and binge eating disorder. It also discusses common assessment findings, treatments, and nursing considerations for managing these conditions.