DDNOS1 and Dissociative Identity Disorder – Do you know the differences?

Dissociative Disorder Not Otherwise Specified (DDNOS) and Other Specified Dissociative Disorder (OSDD)

Dissociative Disorder Not Otherwise Specified was the most commonly diagnosed Dissociative Disorder in the DSM-IV diagnostic manual.[1] DDNOS is a complex dissociative disorder which includes many different groups of dissociative symptoms. The most common presentations of DDNOS are numbered, for example DDNOS1, DDNOS2, etc. The DSM-5 changed the name of DDNOS to Other Specified Dissociative Disorder (OSDD); DDNOS-1 was renamed to OSDD-1.

DDNOS-1 and Other Specified Dissociative Disorder

Dissociative Disorder Not Otherwise Specified (DDNOS) and DID. DDNOS is any significant mix of dissociative symptoms that don't fully fit another Dissociative Disorder - It was renamed to Other Specified Dissociative Disorder in the DSM-5 - DDNOS-1 (DDNOS presentation 1) is very similar to DID. DDNOS 1 is either DDNOS-1a - identity disturbance with less distinct parts than in DID (alter personalities may exist but can't physically take control of the person's body, but strongly influence the person's thoughts and actions and amnesia is present), or DDNOS-1b - distinct dissociative parts (alters identities) exist and can take executive control, but without amnesia, less common - DDNOS may be diagnosed if symptoms are not quite clear enough for DID criteria but are similar - the amnesia needed for DID in the DSM5 has been broadened to "recurrent gaps in the recall of everyday events, important personal information, and/or traumatic events that are inconsistent with ordinary forgetting", meaning amnesia for past trauma alone is enough - symptoms (including alters and amnesia) can be self-reported in the DSM5. height=

DDNOS1 and Dissociative Identity Disorder differences explained and DSM-5 changes to DID.
Information taken from DSM-5 (APA, 2013) and Dissociative Disorders: The DSM-V and beyond (2011).

DDNOS-1 is the most common form of DDNOS, and can be thought of as “partial DID”. [1] The improved wording of the Dissociative Identity Disorder criteria in the DSM-5 will help those incorrectly diagnosed as DDNOS, for instance because of not obviously switching to an alter identity in front of the psychiatrist, be correctly classed as Dissociative Identity Disorder. [1, 2]

References

  1. Dell, P. F., & O’Neil, J. A. (Eds.). (2010).Dissociation and the dissociative disorders: DSM-V and beyond. Routledge. ISBN 1135906033.
  2. American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders: DSM-5. (5th ed.). Washington, D.C.: American Psychiatric Association. ISBN 0890425574.

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2 thoughts on “DDNOS1 and Dissociative Identity Disorder – Do you know the differences?

  1. Pingback: How many types of Dissociation do you know? | Trauma and Dissociation

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