 Show "What will I have for dinner?" "Is it going to rain later?" "I wonder what she meant by that." Questions or comments like these silently passing through our minds reflect how most of us think; they're normal. When the comments heard internally are the voices of other people, however, then psychiatrists suspect schizophrenia. Among the myths surrounding schizophrenia, one of the most persistent is that it involves a "split personality," two separate and conflicting identities sharing one brain. A National Alliance on Mental Illness survey found that 64 percent of the public shares this misconception. "It's an extremely common misunderstanding," says Randon Welton, assistant professor of psychiatry at Penn State Milton S. Hershey Medical Center. "It's based on the name. If you go to the Greek roots of the word—schizein, meaning splitting and phren, meaning mind—you have "split brain" or "split mind." However, the intended reference is to a split between rationality and emotions, not a split within a personality, explains Welton. Split personality, more properly, is an old name for multiple personality disorder, which is itself an outdated name for dissociative identity disorder (DID), an officially recognized but still controversial diagnosis. Welton notes that DID came to the public's attention following the release of books and films such as The Three Faces of Eve and Sybil, accounts of women who developed multiple, distinct personalities following severe abuse as children. "I would describe DID as a trauma-based illness," Welton says. Those affected by it have "at least two and often more distinct identity states which each have fairly consistent patterns of relating to the environment." The American Psychiatric Association definition specifies that "at least two of these identities or personality states recurrently take control of the person's behavior." By contrast, Welton describes schizophrenia as "a largely genetic illness, one that seems to be clustered within families. It seems to be more neurodevelopmental, influenced by how the brain develops. It usually presents in late teens to young adulthood and is more common than DID, with 2.2 million Americans living with the disease. Explains Welton, "You see a gradual, overall decrease in functioning with acute exacerbation, lasting weeks or months, of overtly psychotic symptoms--unless they are caught and treated." While trauma is associated with both disorders, Welton explains that "the traditional difference is that with schizophrenia, the trauma tends to follow the disease. It is a consequence of the illness; it is not causative. Trauma doesn't make someone have schizophrenia, whereas for almost everyone with DID I've ever heard about, it is a reaction to the trauma." Schizophrenia is classified as a psychotic disorder and managed primarily through drugs, whereas DID is considered a developmental disorder that is more responsive to psychotherapy and behavioral modifications. On the surface, the difference between the two disorders seems clear cut. But some psychiatrists, such as Brad Foote of the Albert Einstein College of Medicine, are warning their peers that it may be possible to confuse the two conditions early in the course of treatment. This may happen if voices of alternate personalities in a case of DID "leak through" and comment on events, or talk directly to the core, central personality, without completely taking it over. "Traditionally, any time a patient reports hearing voices like this, it was a strong indication of schizophrenia," Welton says. "Psychosis is not a diagnostic key for DID but it is a common finding in that they will hear one personality talking to another or a personality commenting on them." If these observations are accurate, Welton says "it would be very easy to put that person into a psychotic disorder category because you did not ask the right questions or you didn't ask in the right way." Hearing voices may be more complicated than doctors or patients knew. Randon Welton, MD, is assistant professor of psychiatry at the Pennsylvania Psychiatric Institute, Penn State Hershey Medical Center. He can be reached at . Last Updated October 26, 2010
Questions and AnswersSometimes, people confuse dissociative identity disorder,
formerly known as multiple personality disorder, and schizophrenia. Schizophrenia does mean “split mind,” but the name was meant to describe the ‘split’ from reality that you experience during an episode of psychosis, as well as changes in thoughts, emotions, and other functions. Dissociative identity disorder, on the other hand, does cause a split or fragmented understanding of a person’s sense of themselves. Dissociative identity disorder is really more about fragmented identities than
many different personalities that develop on their own. Most people see different parts of their being as part of the whole person. For people who experience DID, identity fragments may have very different characteristics, including their own history, identity, and mannerisms. A key part of DID is dissociation—feeling detached to the world around you. People who experience DID may have many unexplainable gaps in their memory, forget information they’re already learned, or have difficulties
recalling things they’ve said or done. Unlike portrayals of DID on TV or in movies, DID may not be obvious to others, and it can take a lot of time to come to the diagnosis. Schizophrenia is a serious mental illness that causes hallucinations (sensations that aren’t real) and delusions (beliefs that can’t possibly be true, in addition to other symptoms like jumbled thoughts, jumbled speech, and difficulties expressing emotions. People who experience schizophrenia may hear or feel things
that aren’t real or believe things that can’t be real, but these aren’t separate identities. The Canadian Mental Health Association promotes the mental health of all and supports the resilience and recovery of people experiencing a mental illness through public education, community-based research, advocacy, and direct services. Visit www.cmha.bc.ca. © 2015 | Back to Q&A | Email us a questionStay ConnectedSign up for our various e-newsletters featuring mental health and substance use resources. Can you have both psychosis and did?Psychotic symptoms may occur in dissociative identity disorder (DID), in its partial presentations, and in acute dissociative conditions.
Is schizophrenia associated with did?Schizophrenia and dissociative identity disorder (DID) are typically thought of as unrelated syndromes--a genetically based psychotic disorder versus a trauma-based dissociative disorder--and are categorized as such by the DSM-IV.
Are people with schizophrenia often misdiagnosed as having dissociative identity disorder?Are people with dissociative identity disorder often misdiagnosed? Yes. They are sometimes misdiagnosed as having schizophrenia, because their belief that they have different identities could be interpreted as a delusion. They sometimes experience dissociated identities as auditory hallucinations (hearing voices).
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Can you have both schizophrenia and dissociative identity disorder
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