High Prevalence of Bipolar Spectrum Disorders
J Clin Psychiatry 2001;62:735-736 [letter]
© Copyright 2014 Physicians Postgraduate Press, Inc.
Purchase This PDF for $40.00
If you are not a paid subscriber, you may purchase the PDF.
(You'll need the free Adobe Acrobat Reader.)
Receive immediate full-text access to JCP. You can subscribe to JCP online-only ($86) or print + online ($156 individual).
With your subscription, receive a free PDF collection of the NCDEU Festschrift articles. Hurry! This offer ends December 31, 2011.
If you are a paid subscriber to JCP and do not yet have a username and password, activate your subscription now.
As a paid subscriber who has activated your subscription, you have access to the HTML and PDF versions of this item.
Click here to login.
Did you forget your password?
Still can't log in? Contact the Circulation Department at 1-800-489-1001 x4 or send email
Letter to the Editor
Sir: I read with interest the Journal article by Ghaemi et al. (October 2000) reporting that bipolar spectrum disorders were very common (found in 60% of their sample) and that many subjects diagnosed with “unipolar” depression (56%) were found to have bipolar disorder in a primary care psychiatric setting when patient assessment was made by trained clinicians who systematically and carefully interviewed about past hypomania. These findings support recent studies showing that, in samples of depressed outpatients, the prevalence of bipolar II disorder was 30% to 50%. A community prevalence of bipolar spectrum disorders of 3% to 8.3% has been reported, whereas a 0.5% community prevalence was reported in DSM-IV. The apparent increased prevalence of bipolar II disorder in these recent studies may be related to systematic questioning about past hypomania of depressed patients and the use of a criterion of a minimum duration of hypomania shorter than the 4 days specified by DSM-IV (a cutoff not based on data).