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Bipolar I Disorder

The distinguishing characteristic of Bipolar I Disorder (manic depression) is the manic episode (as opposed to the hypomanic episodes of Bipolar II Disorder). Major depressive episodes are also part of this type of bipolar disorder. Psychotic features are not uncommon. It is considered the most severe form of this mental illness.
Diagnosing Bipolar I Disorder
There is one qualifying event needed for diagnosing Bipolar I Disorder as per the criteria found in the DSM IV.
What is Bipolar I Disorder?
According to the official US definition as outlined in the Diagnostic and Statistical Manual of Mental Disorders published by the American Psychiatric Association, Bipolar I Disorder, considered the most severe form of this mental illness, is "characterized by one or more Manic or Mixed Episodes, usually accompanied by Major Depressive Episodes."
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