The history of Dissociative Identity disorder did not begin with "Sybil" or "The Three Faces of Eve." Case studies or references of the condition go back hundreds of years, to even Jeanne Fery in 1584. Jeanne recounted an exorcism performed on her in detail. Her symptoms of alternate identities match those known today to be DID. Dissociative Identity Disorder has a history of being mistaken for possession, as those who live with it share a mind with alters that can take control of the body's actions. The voices of these alters can also be heard communicating within the head. This concept of possession when it comes to DID is a misconception. There is clear separation in the DSM as to the disorder being a matter pf psychology; not spirits.