USDD, or unspecified dissociative disorder, is one of the five disorders clinically recognized to cause a system, along with DID, OSDD-1, OSDD-1a and OSDD-1b. Its equivalent in the ICD is dissociative disorder unspecified. It is usually made when there are time constraints on making the diagnosis, there is not enough time to specify what disorder exists[1], or the clinician does not want to specify the reason[2].
The criteria for the diagnosis in the DSM-5 is[2]:
This category applies to presentations in which symptoms characteristic of a dissociative disorder that cause clinically significant distress or impairment in social, occupational, or other important areas of functioning predominate but do not meet the full criteria for any of the disorders in the dissociative disorders diagnostic class. The unspecified dissociative disorder category is used in situations in which the clinician chooses not to specify the reason that the criteria are not met for a specific dissociative disorder, and includes presentations for which there is insufficient information to make a more specific diagnosis (e.g., in emergency room settings)
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- ↑ Other Specified and Unspecified Dissociative Disorder on did-research.org
- ↑ 2.0 2.1 Unspecified Dissociative Disorder on traumadissociation.com