橋本脳症(Hashimoto encephalopathy:HE)は,橋本病(慢性甲状腺炎・自己免疫性甲状腺炎)に伴う自己免疫機序により発症する精神神経疾患である.臨床症状は多彩で,意識障害,幻覚・妄想や認知機能障害などの精神症状,振戦やミオクローヌスなどの不随意運動,運動麻痺,小脳性運動失調症,痙攣などがみられる.血清の診断マーカーとしてN末端α-エノラーゼ(NH2-terminal of α-enolase:NAE)に対する自己抗体(抗体NAE抗体)が報告されている.
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