Bipolar disorder is a complex mental health condition that causes intense mood swings , including episodes of mania or hypomania (high energy or elated mood) and episodes of depression. While both Bipolar I and Bipolar II share similarities, they differ in the intensity and type of mood episodes, which can affect treatment approaches and management. Here’s a closer look at what distinguishes Bipolar I from Bipolar II. Understanding Bipolar Disorder: A Brief Overview Bipolar disorder , once called manic-depressive illness, leads to changes in mood, energy, and activity levels, often affecting daily life. Individuals with bipolar disorder experience heightened emotional states, known as manic or hypomanic episodes, as well as depressive episodes . These mood changes are more severe than typical mood shifts, often requiring diagnosis and treatment. The two main types of bipolar disorder—Bipolar I and Bipolar II—are mainly distinguished by the severity and duration of manic or hypomanic ep...