Self-harming behavior in children and adolescents, such as cutting or burning, is a relatively common issue that poses a significant challenge for parents, teachers, as well as doctors and therapists. Often, this behavior is rooted in serious psychological distress, the signs of which are frequently misunderstood. The revised edition of the book provides a well-founded and up-to-date overview of the development, diagnosis, and treatment of this disorder, taking into account new research findings. The focus of the book is on self-harming behaviors that can occur in the context of psychological stress, mental disorders, and among children with intellectual disabilities. The various manifestations of the disorder and their often complex causes are presented in detail. Established and new strategies in diagnosis, prevention, and treatment are also discussed.