Personality disorder not otherwise specified

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Personality disorder, unspecified
Other namesPersonality disorder NOS (PDNOS)

Personality disorder not otherwise specified (PD-NOS) is a subclinical diagnostic classification for some DSM-IV Axis II personality disorders not listed in DSM-IV.[1]

The DSM-5 does not have a direct equivalent to PD-NOS. However, the DSM-5 other specified personality disorder and unspecified personality disorder are substantially comparable to PD-NOS. Additionally, Personality disorder-trait specified (PD-TS) remains under consideration for future revisions and is presented as an alternative, more generic approach to personality disorders in the form of "general criteria for personality disorder" which primarily assesses "impairments in personality functioning".[2]

Diagnostic criteria[edit]


This diagnosis may be given when no other personality disorder defined in the DSM fits the patient's symptoms.[3]

Four personality disorders were excluded from the main body of the DSM-IV-TR but this diagnosis may be used instead. The four excluded personality disorders are:

It is a requirement of DSM-IV that a diagnosis of any personality disorder also satisfies a set of Diagnostic criteria.


The World Health Organization's ICD-10 defines a conceptually similar disorder to "personality disorder not otherwise specified" called (F60.9) Personality disorder, unspecified.

It is a requirement of ICD-10 that a diagnosis of any personality disorder also satisfies a set of Diagnostic criteria.


In one study, PDNOS was found to be the third most frequent personality disorder diagnosis.[4]

See also[edit]


  1. ^ Verheul R, Bartak A, Widiger T (August 2007). "Prevalence and construct validity of Personality Disorder Not Otherwise Specified (PDNOS)". J. Pers. Disord. 21 (4): 359–70. doi:10.1521/pedi.2007.21.4.359. PMID 17685833.[permanent dead link]
  2. ^ American Psychiatric Association (2013). Diagnostic and Statistical manual of Mental Disorders (5th ed.). Washington DC: name. pp. 15. ISBN 978-0-89042-555-8.
  3. ^ Diagnostic and Statistical Manual of Mental Disorders Fourth edition Text Revision (DSM-IV-TR) American Psychiatric Association (2000)
  4. ^ Wilberg T, Hummelen B, Pedersen G, Karterud S (2008). "A study of patients with personality disorder not otherwise specified". Compr Psychiatry. 49 (5): 460–8. doi:10.1016/j.comppsych.2007.12.008. PMID 18702931.

External links[edit]