うつ病・気分症群

単極性うつ病・双極症を含む気分症群の疫学。受療率の経年変化と国際比較。

本ページの概要

本ページは「うつ病・気分症群」について、患者調査・制度・文献・可視化リソースを統合してご紹介します。 内容は月次の自動更新で随時追記されます。

患者調査（時系列）

出典: 厚生労働省 患者調査

年 総患者数_千人 うつ病等_千人 双極性障害_千人 入院患者数_千人 外来患者数_千人 出典
1999 441.0 298.0 71.0 96.0 345.0 患者調査
2002 714.0 491.0 109.0 102.0 612.0 患者調査
2005 922.0 637.0 138.0 105.0 817.0 患者調査
2008 1040.0 728.0 161.0 106.0 934.0 患者調査
2011 958.0 670.0 148.0 98.0 860.0 患者調査（東日本大震災影響で一時減）
2014 1116.0 788.0 166.0 100.0 1016.0 患者調査
2017 1276.0 933.0 185.0 97.0 1179.0 患者調査
2020 1722.0 1275.0 217.0 95.0 1627.0 患者調査（コロナ禍急増）
2023 2000.0 1490.0 252.0 94.0 1906.0 患者調査（推計）

国際比較

出典: OECD Health Statistics ほか

国 12ヶ月有病率(%) 生涯有病率(%) うつ病入院率_人口10万人あたり 抗うつ薬処方率(%) 出典
日本 2.2 6.7 14.0 9.5 川上ら2006・患者調査2020
アメリカ 8.3 17.1 35.0 18.4 NSDUH2020
ドイツ 5.6 13.0 — 13.5 ESEMeD
フランス 4.7 10.0 — 18.2 ESEMeD
イギリス 5.0 12.0 — 16.5 NHS2021
韓国 2.5 5.7 — — KNHANES2020
世界平均 4.4 — — — WHO GBD2019

制度変遷メモ

うつ病・気分症群 診療体制・政策変遷メモ

主要制度転換点

1999年 — パキシル（パロキセチン）承認

  • 日本初のSSRI（選択的セロトニン再取込み阻害薬）承認
  • うつ病の診断・治療が急速に普及
  • 患者数は1999年→2002年でほぼ倍増（44万→71万人）

2000年代前半 — 「うつは心の風邪」キャンペーン

  • 製薬会社主導のメディア啓発
  • 受診行動の大幅な変化（中等・軽症うつの受診増）
  • 診断の裾野が拡大（DSM-IV基準の普及）

2006年 — ジェイゾロフト（セルトラリン）等の追加承認

  • 複数のSSRI/SNRIが競合参入
  • うつ病治療薬市場が急拡大

2009〜2010年 — 産業メンタルヘルス対策強化

  • 自殺対策基本法（2006）→自殺総合対策大綱（2007）
  • メンタルヘルス不調による休職者増加への対応
  • 復職支援プログラム（リワーク）の普及

2011年 — 東日本大震災

  • 被災地でのPTSD・うつ病急増
  • こころのケアチーム派遣（DPAT前身）
  • 一時的に患者数統計が乱れ（2011年調査：前回比減）

2014〜 — ストレスチェック義務化検討→施行（2015年）

  • 50人以上事業所でストレスチェック義務化
  • 職域でのうつ病早期発見・予防体制の整備

2015年 — レクサプロ（エスシタロプラム）普及

  • 忍容性が高く汎用的なSSRIとして広がる
  • 軽症うつへの投与が一般化

2020〜 — COVID-19パンデミック

  • 患者数が2020年で前回比35%以上増加
  • 孤独・孤立、失業、学業困難によるうつ病急増
  • オンライン診療の普及でアクセスが改善

2023〜 — 現在

  • 外来患者数200万人超（推計）
  • 「隠れうつ」「マイクロうつ」等の概念の普及
  • 精神科・心療内科の需要逼迫、予約待ち延長

診療体制上の課題

課題 状況
過少診断 vs 過剰診断 12ヶ月有病率の低さ（2.2%）と患者数急増の乖離
精神科・心療内科の過負荷 外来待機延長、1診療あたり時間が短縮
休職・復職支援 リワークプログラムの保険適用外、企業格差
自殺との関連 うつ病は自殺の最大危険因子（自殺者の60-90%にうつ）
薬物療法偏重 認知行動療法等の心理療法は提供体制が不十分

関連文献

出典: PubMed 等。最新登録順。 全 113 件中、最新 15 件を表示しています。

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  14. Li T, He J, Mao Y, Li H. Prevalence of depression among rural older adults in Asia: a meta-analysis of observational studies. Frontiers in public health (2026). PMID: 42487818 DOI
  15. Al Hattawi KS, Rahman MM, Alam E, Shobuj IA, Hossain MT. Prevalence and associated factors of depression, anxiety, and stress among flood-affected women in Bangladesh: a case study following 2024 flash flood. Frontiers in public health (2026). PMID: 42494895 DOI
過去の文献 98 件を表示
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