Introduction
Mental illnesses are more common than cancer, diabetes, or heart disease. Ongoing research has advanced knowledge on the underlying biology, prevention, and treatments for mental illnesses. Unfortunately, most people who need treatment do not receive it. This chapter provides an introduction to serious mental health disorders in children and adolescents and addresses barriers to people receiving effective treatments. It addresses federal efforts focused on earlier identification of mental illness and improving access to effective treatments. While this book focuses on diagnosing mental illness in children and adolescence, Chapter 1 puts into context what children and adolescents need for good mental health; the importance of partnering with youth and caregivers, addressing issues from a strengths perspective, and engaging in culturally sensitive practice; and the importance of understanding that people are not their mental illness. Finally, an overview of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) and the overall structure of the book is provided.