Fukusuu - Japanese for multiples Dissociative Identity Disorder (DID) - A trauma-based dissociative disorder characterized by a person having two or more identities with separated fragments of memories. A coping mechanism to survive childhood trauma that lasted for a period of time. - Otherwise Specified Dissociative Disorder (OSDD) - A subtype of dissociative disorder that does not meet the full criteria of DID and specified dissociative disorders. These dissociative systems can either have a single identity but with separated memories, or multiple identities with intact memories. Currently a self-diagnosed system, but studies best to further learn about the disorder and the general mental health topic. Meet the Alters book, revised.