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  • Title: Melancholic outpatient depression in Bipolar-II vs. unipolar.
    Author: Benazzi F.
    Journal: Prog Neuropsychopharmacol Biol Psychiatry; 2004 May; 28(3):481-5. PubMed ID: 15093955.
    Abstract:
    BACKGROUND: DSM-IV melancholic major depressive episode (MDE) in bipolar II disorder (BP-II) is understudied. Study aim was to compare melancholic MDE in BP-II vs. unipolar major depressive disorder (MDD) on diagnostic validators and clinical features. METHODS: Consecutive 39 BP-II and 34 unipolar MDD outpatients in a private practice were interviewed (off psychopharmacotherapy) with the Structured Clinical Interview for DSM-IV, as modified by Benazzi and Akiskal [J. Affect. Disord. 73 (2003) 1], when presenting for treatment of MDE. DSM-IV criteria of melancholic features specifier were followed. Variables studied were index age, gender, age at onset of the first MDE, number of MDE recurrences, severity (measured by GAF, index MDE psychotic features, index MDE symptoms lasting more than 2 years, Axis I comorbidity), index MDE and melancholic symptoms, bipolar family history. Diagnostic validators were onset, family history, course of illness, and clinical picture. RESULTS: BP-II melancholic MDE, vs. MDD melancholic MDE, had significantly lower age at onset and more bipolar family history. Psychomotor agitation was significantly more common in BP-II melancholic MDE, but was present only in 43.5%. Psychomotor retardation was more common in MDD melancholic MDE at a trend level, but was present only in 20.5%. CONCLUSIONS: Psychomotor agitation was more common in BP-II melancholic MDE vs. unipolar MDD, while previous studies on bipolar I (BP-I) had usually found more retardation. The difference could be related to BP-I and BP-II being at least partly distinct disorders. The relatively low frequency of psychomotor change does not seem to support the view that this is the core feature of melancholia. Differences on diagnostic validators (most importantly family history) further support the distinction of melancholic MDE between BP-II and MDD, and support DSM-IV classification.
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