A disease that occurs as a result of cerebral circulatory disorders caused by hardening of the cerebral arteries. It begins with acute or subacute changes in cerebral blood flow, such as hypertensive encephalopathy or transient ischemic attacks, and often leads to hemorrhage and infarction, leading to multi-infarct dementia. Early symptoms include insomnia, headache, forgetfulness, and dizziness, and eventually the ability to perform mental tasks declines, leading to dementia. It is characterized by affective incontinence (rapid emotional changes) and patchy dementia (patchy dementia, characterized by uneven decline in mental function). Source: Heibonsha World Encyclopedia, 2nd Edition Information |
脳動脈の硬化によって生じる脳循環障害の結果起こる病気。急性または亜急性に脳血流に変化が起こり,高血圧性脳症や一過性虚血発作などで始まり,出血や梗塞(こうそく)を起こし,多発梗塞性痴呆(ちほう)となることが多い。初期の症状は,不眠,頭痛,もの忘れ,めまいなどで,やがて精神作業能力低下から痴呆に至る。情動失禁(感情変化のめまぐるしさ)や斑性痴呆(まだら痴呆のことで,精神機能低下が不均等なこと)が特徴とされる。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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