Bipolar NOS, which is short for “not other specified.” Like bipolar 1 and 2 and Cyclothymia, also called cyclothymic disorder experience episodes of mania or depression. These episodes do not have the intensity or duration of bipolar 1 or 2 or cyclothymic disorder. Your psychiatrist may put you into this category because you do not meet the qualifications of bipolar 1 or 2 or cyclothymic disease. You may experience long-term episodes of depression or low levels of depression. You may also have a “mixed state’” of hypomania and depression at the same time, or you may also have hypomania spells without the depression. It is also possible that you could have changes in moods, a full-blown state of mania or depression. These symptoms may come and go at a rate that disqualifies them from fitting into the other three categories; bipolar NOS becomes a more significant problem when you have a maniac or cyclothymia episode schizophrenic psychotic disorder. Bipolar NOS may also be considered to be a delusional disorder, recognized by you having delusional thoughts and psychosis hallucinations.