Bipolar disorder not otherwise specified (BD-NOS) is a diagnosis for

bipolar disorder Bipolar disorder, previously known as manic depression, is a mental disorder characterized by periods of depression and periods of abnormally elevated mood that last from days to weeks each. If the elevated mood is severe or associated with ...

(BD) when it does not fall within the other established sub-types. Bipolar disorder NOS is sometimes referred to as subthreshold bipolar disorder.

Classification

BD-NOS is a

mood disorder A mood disorder, also known as an affective disorder, is any of a group of conditions of mental and behavioral disorder where a disturbance in the person's mood is the main underlying feature. The classification is in the ''Diagnostic and Stat ...

and one of four subtypes on the bipolar spectrum, which also includes

bipolar I disorder Bipolar I disorder (BD-I; pronounced "type one bipolar disorder") is a type of bipolar spectrum disorder characterized by the occurrence of at least one manic episode, with or without mixed or psychotic features. Most people also, at other time ...

bipolar II disorder Bipolar II disorder (BP-II) is a mood disorder on the bipolar spectrum, characterized by at least one episode of hypomania and at least one episode of major depression. Diagnosis for BP-II requires that the individual must never have experience ...

, and

cyclothymia Cyclothymia ( ), also known as cyclothymic disorder, psychothemia/psychothymia, bipolar III, affective personality disorder and cyclothymic personality disorder, is a mental and behavioural disorder that involves numerous periods of symptoms of ...

. BD-NOS was a classification in the DSM-IV and has since been changed to Bipolar "Other Specified" and "Unspecified" in the 2013 released

DSM-5 The ''Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition'' (DSM-5), is the 2013 update to the ''Diagnostic and Statistical Manual of Mental Disorders'', the taxonomic and diagnostic tool published by the American Psychiatric ...

(American Psychiatric Association, 2013).

Diagnosis

Bipolar disorder is difficult to diagnose. 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 Hypomania (literally "under mania" or "less than mania") is a mental and behavioural disorder, characterised essentially by an apparently non-contextual elevation of mood (euphoria) that contributes to persistently disinhibited behaviour. The ...

. 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 a substance use disorder.

Treatment

Individual approaches to treatment are recommended, usually involving a combination of

mood stabilizer A mood stabilizer is a psychiatric medication used to treat mood disorders characterized by intense and sustained mood shifts, such as bipolar disorder and the bipolar type of schizoaffective disorder. Uses Mood stabilizers are best known for th ...

s and atypical antipsychotics. Psychotherapy may be beneficial and should be started early.

Classification

Diagnosis

Treatment

Epidemiology

See also

References

External links