Section 3 addresses the common disorders of childhood and adolescence, including affective disorder, obsessive-compulsive disorder, tics and Tourette’s disorder, separation anxiety disorder, attention deficit hyperactivity disorder, conduct and oppositional disorders, alcohol and substance abuse disorders, pervasive developmental disorder, and learning disorders. All of these clinical chapters are well written by experts in the field and adhere to criteria in DSM-IV. Section 4 describes therapeutic interventions; chapter 17 in this section is devoted to pharmacotherapy in children and adolescents. It is a comprehensive review of the medications that are approved or used off-label for children and adolescents. The author addresses psychopharmacology in young patients in a comprehensive fashion, including such issues as method of action of the medication, risks and benefits of the medication, dose schedule, and side effects. Obviously, much more could be said about each medication, but for a quick guide and reference, this chapter is useful.