双極症患者の自閉傾向は役割・社会的QOLの持続的な低さと関連 ―外来患者78名を12か月間追跡―

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2026-11-10 国立精神・神経医療研究センター

国立精神・神経医療研究センターの研究グループは、双極症患者における自閉傾向と健康関連QOL(生活の質)の関係を、12か月間の追跡調査によって明らかにした。NCNP病院の気分障害専門外来に通院する双極症患者のうち、78名を対象に、自閉傾向、抑うつ・躁症状、身体的・精神的・社会的QOLの変化を評価した。その結果、自閉傾向が高い患者では、仕事や家事、人付き合いなどに関する役割・社会的QOLが低く、その差は12か月後も認められた。一方、自閉傾向の高低にかかわらず、精神的QOLは改善し、両群で抑うつ症状も軽減した。自閉傾向が高いことは、自閉スペクトラム症(ASD)の診断を意味するものではない。今回の成果は、双極症の治療において気分症状だけでなく、患者の発達特性や社会生活上の困難にも着目した個別化支援の重要性を示している。

双極症患者の自閉傾向は役割・社会的QOLの持続的な低さと関連 ―外来患者78名を12か月間追跡―
図1 SF-36による健康関連QOL得点の12か月間の変化
点は各群の推定平均値、エラーバーは標準誤差を示す。

<関連情報>

双極性障害患者における自閉症様特性と健康関連QOLの経時的変化:12ヶ月間の研究 Autistic-like traits and longitudinal changes in health-related quality of life among individuals with bipolar disorder: A 12-month study

Risa Yamada,Hiroshi Kunugi,Takuma Inagawa,Kotaro Hattori,Tomoko Kurashimo,Naoko Ishihara,Haeeun Song,Sawako Sumiyoshi,Sumiko Yoshida,Andrew Stickley,Tomiki Sumiyoshi
Journal of Psychiatric Research   Available online: 5 September 2026
DOI:https://doi.org/10.1016/j.jpsychires.2026.09.011

Highlights

  • 12-month changes in health-related QOL were followed in 78 patients with bipolar disorder.
  • Participants were classified into either elevated- or non-elevated autistic-like trait group.
  • Mental QOL improved over time, while physical QOL remained stable in both groups.
  • Depressive symptoms improved over time but were consistently higher in the elevated-trait group.
  • Autistic-like traits were associated with persistently lower role/social functioning.

Abstract

Objective
Autistic-like traits are common in bipolar disorder (BD) and have been linked to poor functional outcomes, yet their longitudinal impact on quality of life (QOL) remains unclear. This study examined whether autistic-like traits are associated with 12-month changes in health-related QOL in BD.

Methods
Seventy-eight outpatients with BD who completed 12-month follow-up assessments were included (mean age = 34.9 years). Autistic-like traits were assessed using the Social Responsiveness Scale for Adults (SRS-A), with participants classified into elevated- and non-elevated-traits groups. Depressive and manic symptoms were evaluated using the 17-item Hamilton Depression Rating Scale (HAMD-17) and the Young Mania Rating Scale (YMRS). QOL was measured using the 36-Item Short-Form Health Survey (SF-36). Linear mixed models were used to examine longitudinal changes.

Results
HAMD-17 scores demonstrated significant main effects of time and group, reflecting overall improvement but persistently higher depressive symptoms in the elevated-traits group. YMRS scores indicated a significant group effect only. Physical QOL remained stable, while mental QOL improved over time without group differences. Role/social QOL showed significant main effects of time and group, with consistently lower scores in the elevated-traits group. No group × time interactions emerged, suggesting similar rates of change between groups.

Conclusions
This prospective study suggests that autistic-like traits in BD are associated with persistently poorer role/social functioning over time rather than differences in recovery trajectories. Assessing autistic-like traits may help identify patients at risk of poorer functioning and guide tailored psychosocial interventions.

医療・健康
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