頭部外傷と認知症

Cognitive Dysfunction Due to Traumatic Brain Injury

Point

・外傷に伴う認知機能障害の診断は，臨床症状，臨床心理検査，そして画像診断から行う．

・慢性硬膜下血腫の発症時症状として認知機能障害を認めた場合は，機能的転帰が悪い．

・器質的脳損傷を認めない軽度外傷性脳損傷は，外傷に伴う認知機能障害を後遺しない．

　Traumatic brain injury (TBI)-associated dementia refers to cognitive dysfunction resulting from brain injury caused by head trauma. With advances in medical care, the survival rate of TBI patients has increased. Additionally, the growing elderly population has led to a rise in cases of cognitive dysfunction following TBI. As a result, the assessment and management of such conditions have become urgent issues. Accurate diagnosis of TBI-related cognitive impairment requires objective evaluation, primarily through radiological neuroimaging.

　This paper provides an overview of cognitive dysfunction caused by traumatic brain injury and discusses relevant conditions encountered in neurosurgical practice.