Personality disorder not otherwise specified
|Personality disorder, unspecified|
|Classification and external resources|
|Cluster A (odd)|
|Cluster B (dramatic)|
|Cluster C (anxious)|
Conversely, the DSM 5 does not have an equivalent to Personality Disorder NOS. The DSM 5 "Unspecified Disorder" is not a personality disorder, it is used to enhance specificity of an existing disorder  or it is an emergency diagnosis unto itself (i.e. Unspecified Mental Disorder, 300.9), without being attached to another disorder.
Diagnostic criteria (DSM-IV-TR = 301.9)
This diagnosis may be given when no other personality disorder defined in the DSM fits the patient's symptoms.
Four personality disorders were excluded from the main body of the latest version of the DSM (DSM-IV-TR) but this diagnosis may be used instead. The four personality disorders are:
- Sadistic personality disorder
- Self-defeating personality disorder
- Depressive personality disorder
- Passive–aggressive personality disorder
It is a requirement of DSM-IV that a diagnosis of any personality disorder also satisfies a set of general personality disorder criteria.
Diagnostic criteria (ICD-10)
It is a requirement of ICD-10 that a diagnosis of any personality disorder also satisfies a set of general personality disorder criteria.
|This section requires expansion. (November 2009)|
In one study, PDNOS was found to be the third most frequent personality disorder diagnosis.
- DSM-IV codes (personality disorders)
- ICD-10 codes (personality disorders)
- Eating disorder not otherwise specified
- Mood disorder not otherwise specified
- Pervasive Developmental Disorder - Not Otherwise Specified
- 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.
- American Psychiatric Association (2013). Diagnostic and Statistical manual of Mental Disorders: (5th ed.). Washington DC: name. p. 15. ISBN 978-0-89042-555-8.
- American Psychiatric Association (2013). Diagnostic and Statistical Manual of Mental Disorders (5th ed.). Washington DC: name. p. 708. ISBN 978-0-89042-555-8.
- Diagnostic and Statistical Manual of Mental Disorders Fourth edition Text Revision (DSM-IV-TR) American Psychiatric Association (2000)
- 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.
4. American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). Washington, DC: Author.