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Bipolar II disorder has the highest prevalence of seasonal affective disorder in early-onset mood disorders: Results from a prospective observational cohort study

Authors
Yeom, Ji WonCho, Chul-HyunJeon, SehyunSeo, Ju YeonSon, SerhimAhn, Yong-MinKim, Se JooHa, Tae HyonCha, BoseokMoon, EunsooPark, Dong YeonBaek, Ji HyunKang, Hee-JuAn, HyongginLee, Heon-Jeong
Issue Date
6월-2021
Publisher
WILEY
Keywords
bipolar disorder; mood disorders; seasonal affective disorder; seasonal variation; young adult
Citation
DEPRESSION AND ANXIETY, v.38, no.6, pp.661 - 670
Indexed
SCIE
SSCI
SCOPUS
Journal Title
DEPRESSION AND ANXIETY
Volume
38
Number
6
Start Page
661
End Page
670
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/127980
DOI
10.1002/da.23153
ISSN
1091-4269
Abstract
Background Many mood disorder patients experience seasonal changes in varying degrees. Studies on seasonality have shown that bipolar disorder has a higher prevalence rate in such patients; however, there is limited research on seasonality in early-onset mood disorder patients. This study estimated the prevalence of seasonality in early-onset mood disorder patients, and examined the association between seasonality and mood disorders. Methods Early-onset mood disorder patients (n = 378; 138 major depressive disorder; 101 bipolar I disorder; 139 bipolar II disorder) of the Mood Disorder Cohort Research Consortium and healthy control subjects (n = 235) were assessed for seasonality with Seasonality Pattern Assessment Questionnaire (SPAQ). Results A higher global seasonality score, an overall seasonal impairment score, and the prevalence of seasonal affective disorder (SAD) and subsyndromal SAD showed that mood disorder subjects had higher seasonality than the healthy subjects. The former subject group had a significantly higher mean overall seasonal impairment score than the healthy subjects (p < .001); in particular, bipolar II disorder subjects had the highest prevalence of SAD, and the diagnosis of bipolar II disorder had significantly higher odds ratios for SAD when compared to major depression and bipolar I disorder (p < .05). Conclusions Early-onset mood disorders, especially bipolar II disorder, were associated with high seasonality. A thorough assessment of seasonality in early-onset mood disorders may be warranted for more personalized treatment and proactive prevention of mood episodes.
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