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Updated: Jan 13, 2026

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Assessing Dyslexia at Six Year of Age
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Alexia without agraphia - 書かれたものを読めない
Gustaf Westerberg1, Sigurd Dobloug2
1ST-läkare, neurologi, Helsingborgs lasarett.
まとめ
この症例報告は、読字能力は失われているが書字能力は損なわれていないまれな状態である失読症(失書を伴わない失読症)の患者を提示する。この神経学的欠損は、左後頭葉に影響を与える脳卒中によって引き起こされた。
科学分野:
- 神経学、神経科学、医学症例報告
背景:
- 失読症(失書を伴わない失読症)は、書字能力が保たれているにもかかわらず読字能力が失われている状態を特徴とするまれな神経学的状態である。この状態は通常、左後頭葉および/または脳梁膝部への病変と関連している。
研究 の 目的:
- 高齢男性患者における失読症(失書を伴わない失読症)の症例報告を提示すること。失読症(失書を伴わない失読症)の臨床症状と神経画像所見を相関させること。
主な方法:
- 急性神経学的欠損を呈する高齢男性患者の症例報告。脳のコンピューター断層撮影(CT)および磁気共鳴画像法(MRI)を実施した。読字能力および書字能力を評価するために、神経内科医による神経学的検査を実施した。
主要な成果:
- 患者は軽度の錯乱と表現性失語症を呈した。CTスキャンでは、P2閉塞を伴う左後頭葉に5cmの梗塞が明らかになった。神経学的検査により、書字能力(スペルと筆記を含む)はそのまま保たれている一方で、読字能力が失われていることが確認された。MRI所見は、失読症(失書を伴わない失読症)の以前の報告例と一致していた。
結論:
- この症例は、失読症(失書を伴わない失読症)の典型的なプレゼンテーションを示している。神経画像検査により、観察された臨床症状と相関する左後頭葉の病変部位が確認された。この症例は、読字と書字の神経解剖学的基盤の理解を深めるものである。
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