Mental illness characterized by the alternation of manic and depressive states. Depression is the more common symptom, and many patients experience only a brief period of overoptimism and mild euphoria during the manic phase. The condition, which seems to be inheritable, probably arises from malregulation of the amines norepinephrine, dopamine, and 5-hydroxytryptamine. It is most commonly treated with lithium carbonate.
Variants of BIPOLAR DISORDER
bipolar disorder or manic-depressive psychosis
This entry comes from Encyclopædia Britannica Concise.
For the full entry on bipolar disorder, visit Britannica.com.
Seen & Heard
What made you look up bipolar disorder? Please tell us what you were reading, watching or discussing that led you here.