神経疾患と"内因"

Endogenous etiologies in neurological diseases

　神経疾患の発生には遺伝的要因，または広い意味での"内因"が関与する場合が多い。本稿の目的はこの問題を一般的に検討することである。なおここで内因とは明確な外因が指摘できない，というほどの意味である。

Abstract

With recent decline of diseases due to infectious, toxic, traumatic and other exogenous etiologies, so-called endogenous diseases including genetic, congenital, constitutional and others with obscurecauses, became seriously concerned in neurological practice. Only 1/4 of the outpatients in our Department had exogenous diseases whereas no known extrinsic causes were established in 3/4.