Experiences of violence, sexual abuse, accidents, disasters or deaths of close relatives or friends, and other extreme situations can lead to trauma-related disorders. Since 2018, the World Health Organization has distinguished four such disorders in its classification list: "classic" and complex post-traumatic stress disorder, as well as prolonged grief disorder and adjustment disorder. These long-term effects are described in detail in the book. In recent years, a variety of interventions have been developed to effectively treat these disorders.   This 5th edition has been largely reorganized due to the groundbreaking innovations in which the editor played a decisive role on an international level.   Among the innovations are the chapters on:  - Complex post-traumatic stress disorder - Childhood violence and its consequences - Low-threshold and innovative interventions - Methods of cognitivebehavioral therapy - Psychodynamic approaches The handbook on psychological trauma-related disorders.