Bipolar Disorder

**Semantic type:** Mental or Behavioral Dysfunction

**Definition:** A disorder of the brain that causes unusual shifts in mood, energy, activity levels and the ability to carry out day-to-day tasks. Often these moods range and shift from periods of elation and energized behavior to those of hopelessness and depression.

**Synonyms:** - Bipolar disorder, unspecified - Manic Depressive Disorder - Manic-Depression