Bipolar II Disorder is characterized by a pattern of recurrent depressive episodes and at least one hypomanic episode—defined as a distinct period of elevated, expansive, or irritable mood lasting at least four consecutive days, without the full intensity or impairment of mania. While individuals with Bipolar II do not experience manic episodes, their depressive episodes are often more frequent and functionally impairing than in Bipolar I. The focus of treatment is long-term mood stabilization, prevention of relapse, and development of self-management strategies for energy, sleep, and emotion regulation.