Cited by 389Bipolar Disorder and TreatmentPersonality Disorders and PsychopathologyMental Health Research Topics

Long-term symptomatic status of bipolar I vs. bipolar II disorders

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Judd, Lewis L., Schettler, Pamela J., Akiskal, Hagop S., Maser, Jack, Coryell, William, Solomon, David, Endicott, Jean, Keller, Martin·2003·The International Journal of Neuropsychopharmacology

Abstract

Weekly affective symptom severity and polarity were compared in 135 bipolar I (BP I) and 71 bipolar II (BP II) patients during up to 20 yr of prospective symptomatic follow-up. The course of BP I and BP II was chronic; patients were symptomatic approximately half of all follow-up weeks (BP I 46.6% and BP II 55.8% of weeks). Most bipolar disorder research has concentrated on episodes of MDD and mania and yet minor and subsyndromal symptoms are three times more common during the long-term course. Weeks with depressive symptoms predominated over manichypomanic symptoms in both disorders (31) in BP I and BP II at 371 in a largely depressive course (depressive symptoms=59.1% of weeks vs. hypomanic=1.9% of weeks). BP I patients had more weeks of cyclingmixed polarity, hypomanic and subsyndromal hypomanic symptoms. Weekly symptom severity and polarity fluctuated frequently within the same bipolar patient, in which the longitudinal symptomatic expression of BP I and BP II is dimensional in nature involving all levels of affective symptom severity of mania and depression. Although BP I is more severe, BP II with its intensely chronic depressive features is not simply the lesser of the bipolar disorders; it is also a serious illness, more so than previously thought (for instance, as described in DSM-IV and ICP-10). It is likely that this conventional view is the reason why BP II patients were prescribed pharmacological treatments significantly less often when acutely symptomatic and during intervals between episodes. Taken together with previous research by us on the long-term structure of unipolar depression, we submit that the thrust of our work during the past decade supports classic notions of a broader affective disorder spectrum, bringing bipolarity and recurrent unipolarity closer together. However the genetic variation underlying such a putative spectrum remains to be clarified.

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  1. [2]2. Akiskal HS (1983). The bipolar spectrum: new concepts in classification and Diagnosis. In : Grinspoon L (Ed.), Psychiatry Update: The American Psychiatric Association Annual Review, vol. 2 (pp. 271-292). Washington, DC : American Psychiatric Press.
  2. [9]9. Endicott J, Nee J, Andreasen N, Clayton P, Keller M, Coryell W (1985). Bipolar II. Combine or keep separate? Journal of Affective Disorders 8, 17-28.

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Authors
Judd, L. L., Schettler, P. J., Akiskal, H. S., Maser, J., Coryell, W., Solomon, D., Endicott, J., & Keller, M.
Affiliations
  • University of California San Diego (US)
  • National Institute of Mental Health (US)
Corresponding author
Judd, Lewis L.
Venue
The International Journal of Neuropsychopharmacology
Published
2003-06
Volume
6
Issue
2
Pages
127-137
ISSN
  • 1461-1457 (ISSN-L)
  • 1469-5111
OpenAlex
W2119349901
Cited by
389
References
30
Citations by year
2026: 9 · 2025: 7 · 2024: 17 · 2023: 10 · 2022: 14 · 2021: 11 · 2020: 15 · 2019: 27 · 2018: 18 · 2017: 15 · 2016: 22 · 2015: 21 · 2014: 23 · 2013: 22 · 2012: 24
FWCI
8.57
Type
journal article
Language
en
Open access
Locations
  • The International Journal of Neuropsychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • University of California, San Diego
  • National Institute of Mental Health (R01MH025478)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
  • Social Sciences › Psychology › Clinical Psychology › Personality Disorders and Psychopathology
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Mental Health Research Topics
Keywords
bipolar I disorder, bipolar II disorder, depressive symptoms, hypomanic symptoms, subsyndromal symptoms, chronic depression, major depressive disorder
MeSH terms
Adolescent, Adult, Aged, Bipolar Disorder, Female, Follow-Up Studies, Humans, Long-Term Care, Male, Middle Aged, Psychiatric Status Rating Scales

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