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Bipolar disorder not otherwise specified

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Title: Bipolar disorder not otherwise specified  
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Subject: Bipolar disorder, Mood disorder, Mood disorders, Racing thoughts, Karl Leonhard
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Bipolar disorder not otherwise specified

Bipolar disorder NOS
Classification and external resources
ICD-10 f31.9
ICD-9 296.8

Bipolar disorder not otherwise specified (BD-NOS) is a diagnosis for bipolar disorder (BD) when it does not fall within the other established sub-types. Bipolar disorder NOS is sometimes referred to as subthreshold bipolar disorder.[1]


BD-NOS is a mood disorder and one of three subtypes on the bipolar spectrum, which also includes bipolar I disorder and bipolar II disorder.[1] BS-NOS was a classification in the DSM-IV and has since been changed to Bipolar "Other Specified" and "Unspecified" in the 2013 released DSM-V (American Psychiatric Association, 2013).


Bipolar disorder is difficult to diagnose.[2] If a person displays some symptoms of bipolar disorder but not others, the clinician may diagnose bipolar NOS. The diagnosis of bipolar NOS is indicated when there is a rapid change (days) between manic and depressive symptoms and can also include recurring episodes of hypomania. Bipolar NOS may be diagnosed when it is difficult to tell whether bipolar is the primary disorder due to another general medical condition, such as substance abuse.[3]


Individual approaches to treatment are recommended, usually involving a combination of mood stabilizers and atypical antipsychotics.[4] Psychotherapy may be beneficial and should be started early.[4]


The prevalence of BD-NOS is 1.4%.[1]


  1. ^ a b c "International impact of bipolar disorder highlights need for recognition and better treatment availability". March 7, 2011. Retrieved April 25, 2012. 
  2. ^ Leboyer M, Kupfer DJ (December 2010). "Bipolar disorder: new perspectives in health care and prevention". J Clin Psychiatry 71 (12): 1689–95.  
  3. ^ Diagnostic and Statistical Manual of Mental Disorders (4th edition ed.). American Psychiatric Association. 1994. p. 366. 
  4. ^ a b Filaković P, Erić AP, Požgain I (September 2011). "New strategies in the treatment of bipolar disorder" (PDF). Psychiatr Danub 23 (3): 293–9.  
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