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Bipolar Disorder Prevalence Hidden by Diagnostic Thresholds

(PSYCHIATRIC TIMES) - BETHESDA, Md., May 8 -- There may be twice as many patients with bipolar spectrum disorders as generally suspected, according to a national survey.

The survey found that 4.4% of Americans have had a form of bipolar disorder at some point in their lifetime, whereas the prevalence of bipolar I and II combined over a lifetime is typically cited at about 1.9%.

The difference was attributed to the 2.4% prevalence of "subthreshold" bipolar disorder, Kathleen R. Merikangas, Ph.D., of the National Institute of Mental Health here, and colleagues, reported in the May issue of the Archives of General Psychiatry.

For full article, please visit:
http://www.psychiatrictimes.com/bipolar-disorder/article/10162/24214

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