The existence of the clinical reality of schizoaffective disorders is no longer in question. Clinician experience suggests that there is indeed an intermediary or transitional group between schizophrenic and affective disorders. Jules Angst states: The better and longer we know our patients, the more frequently we will make the diagnosis of schizoaffective psychosis. In this book, renowned authors compile the most important aspects of differentiation, diagnosis, and therapy for adolescents and adults. In addition to historical and theoretically grounded considerations, clinical and therapeutic approaches, as well as the course and prognosis, are described in detail. The pharmacological treatment strategies presented are complemented by psychodynamic approaches. The book is aimed at all those who are involved in the therapeutic care of schizoaffective disorders.