Mongolism

Japanese: mongolism
Mongolism

…In 1866, J.L.H. Down described this condition as mental retardation with a distinctive facial appearance. It was once called Mongolism, but this term is no longer used today because it is an inappropriate term based on racial prejudice. It is caused by an abnormality in the 21st chromosome, and occurs in approximately 1 in 700 births, but the frequency increases with the mother's age at birth. …

*Some of the terminology explanations that mention "mongolism" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…1866年,J.L.H.ダウンが特異な顔貌をもつ精神遅滞として記載し,この名がある。かつては蒙古症(モンゴリズムmongolism)とも呼ばれたが,これは人種的偏見に基づく不適切な表現であるため,今日では用いられない。21番めの染色体の異常が原因で,出生約700人に1人の割合でみられるが,母親の出産年齢が高いほどその頻度は大きくなる。…

※「mongolism」について言及している用語解説の一部を掲載しています。

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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