Subsyndromal Depression

아증후군적 우울증

  • Park, Joon-Hyuk (Department of Psychiatry, Jeju National University Hospital, School of Medicine, Jeju National University) ;
  • Kim, Ki-Woong (Department of Psychiatry, Seoul National University Bundang Hospital, College of Medicine, Seoul National University)
  • 박준혁 (제주대학교 의학전문대학원 제주대학교병원 정신건강의학교실) ;
  • 김기웅 (서울대학교 의과대학 분당서울대학교병원 정신건강의학교실)
  • Received : 2011.09.16
  • Accepted : 2011.11.03
  • Published : 2011.11.30

Abstract

Subsyndromal depression (SSD) is found to be more prevalent than major depressive disorder (MDD) and minor depressive disorder (MnDD). SSD is also associated with adverse clinical outcomes, increased risk of suicide, increased social dysfunction and disability, increased risk for future mood disorders, and increased uses of medical and mental health services. DSM-IV diagnostic criteria are not suitable for capturing SSD. Although there is no agreement on gold standard to define SSD so far, three definitions of SSD are available. First, SSD is defined as having two or more current depressive symptoms without core depressive symptoms (depressive mood or loss of interest) and with time threshold (most of the day and nearly every day over at least two weeks). Second, SSD is defined as having two or more current depressive symptoms with core depressive symptoms and without time threshold. Third, SSD is defined by using cutoff points of depression rating scales. SSD may represent a prodromal, residual, or interepisode symptomatic state in the course of MDD and MnDD. More than a half of SSD patients became any type of depressive disorders (SSD, MnDD and MDD) at 1 year. SSD may represent a discrete category of its own, without prior or consequent episodes of MDD. Considering clinical significance of SSD such as its high prevalence, significant psychosocial impairment and chronicity and serious outcomes, researchers and clinicians should be more vigilant in capturing and caring for patients with SSD.

Keywords

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