This book contains 35 chapters on suicide in adolescence. It is divided into 10 sections. The first section discusses different risk factors in suicide. Section 2 deals with the relationship between eating disorders and suicide. Section 3 tackles the genetic aspects of suicide behaviour. Section 4 focuses on the assessment of suicide patients. Section 5 describes suicidal patients seen in the emergency room. Section 6 discusses the worldwide incidence of suicide, whereas Section 7 covers suicidal behaviour in special populations. Sections 8 and 9 discuss the treatment and prevention of suicide, respectively.