text: Bipolar<unk>  Disorder is a bipolar spectrum disorder that is characterized by at least one hypomanic episode and at least one major depressive episode; with this disorder, depressive episodes are more frequent and more intense than manic episodes.  It is believed to be underdiagnosed because hypomanic behavior often presents as high-functioning.[citation needed]
option_0: Bipolar II disorder diagnostic criteria
option_1: Bipolar I disorder diagnostic criteria
option_2: Bipolar disorder diagnostic criteria
option_3: Bipolar disorder classification
option_4: Anhedonia diagnostic criteria
option_5: Acute stress disorder diagnostic criteria
option_6: Clinical depression diagnostic criteria
option_7: Obsessive-compulsive disorder diagnostic criteria