TYPES OF BIPOLAR DISORDER
BIPOLAR 1 DISORDER
Characterized by manic episodes that last at least 7 days or result in hospitalization followed by periods of depression that last at least 2 weeks.
BIPOLAR II DISORDER
Described as stretches of depression and high mood but not as severe as Bipolar I.
CYCLOTHYMIC DISORDER
Described as a mental and behavioral disorder that causes numerous periods of symptoms of depression and periods of elevated moods.
CAUSES OF BIPOLAR DISORDER
GENETICS
Bipolar disorder can run in families but many people who have bipolar disorder do not have a family history of the condition.
STRESS
Stressful events can trigger a manic or depressive episode.
BRAIN STRUCTURE AND FUNCTION
Researchers have found subtle differences in the average size or activation of the same brain structures in people with bipolar disorder.