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Definition of Bipolar I disorder

Bipolar I disorder: The diagnosis of bipolar I disorder requires that the individual has at least one manic episode but does not require a history of major depression.

See also: Bipolar disorder.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=30743
Last Editorial Review: 10/9/2012

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