Bipolar disorder NOS (Not Otherwise Specified) is defined by the DSM is a more general category of bipolar disorders that do not fit the descriptions of bipolar I disorder, bipolar II disorder, or cyclothymic disorder. Examples of when this diagnosis is used include: To meet clinical standards these symptoms also must cause significant distress or impairment in social, occupational, or other important areas of functioning. The condition is also not caused or explained by the following: * Due to effects of drugs or medication * Due to a medical condition