In the context of mental illnesses, there is an increasing discussion of trauma and traumatization both in clinical settings and in public discourse. Specialized knowledge is required for the therapy of individuals whose mental illness stems from overwhelming experiences. This practice-oriented textbook, based on extensive clinical experience, provides a comprehensive and multifaceted introduction to the history and current scientific status of psychotraumatology. It describes all relevant disorders, their diagnostics and therapy, and clarifies where further developments can be expected.