What are the types of bipolar disorder?

What are the types of bipolar disorder?

There are four types of bipolar disorder, including:

• Bipolar I disorder: People with bipolar I disorder have experienced one or more episodes of mania. Most people with bipolar I will have episodes of both mania and depression, but an episode of depression isn’t necessary for a diagnosis. The depressive episodes usually last at least two weeks. To be diagnosed with bipolar I, your manic episodes must last at least seven days or be so severe that you need hospitalization. People with bipolar I can also experience mixed states (episodes of both manic and depressive symptoms).
• Bipolar II disorder: People with bipolar II experience depressive episodes and hypomanic episodes. But they never experience a full manic episode that’s characteristic of bipolar I disorder. While hypomania is less impairing than mania, bipolar II disorder is often more debilitating than bipolar I disorder due to chronic depression being more common in bipolar II.
• Cyclothymic disorder (cyclothymia): People with cyclothymic disorder have a chronically unstable mood state. They experience hypomania and mild depression for at least two years. People with cyclothymia may have brief periods of normal mood (euthymia), but these periods last fewer than eight weeks.
• Other specified and unspecified bipolar and related disorders: If a person doesn’t meet the diagnostic criteria for bipolar I, II or cyclothymia but has still experienced periods of clinically significant abnormal mood elevation, it’s considered other specified or unspecified bipolar disorder.