Perhaps no disorder is more confusing and perplexing to mental health professionals than Dissociative Identity Disorder. Does it exist? How often does it occur? How do I know if the client in front of me has it? In this volume Dr. Elaine Ducharme takes the reader through the history of the disorder, discusses different aspects of making this difficult diagnosis, describes how dissociation comes to take place, how dissociation is experienced by the client, and ways to treat this unusual disorder. Dr. Ducharme draws upon her years of experience in treatment of clients with this diagnosis as a clinical psychologist and provides case examples to describe her fascinating work. This book is essential reading for all mental health professionals who deal with clients who have been victims of trauma or for those who want to improve their assessment and treatment skills with complex cases.