Cerebellar ataxia

Japanese: 小脳失調症 - しょうのうしっちょうしょう（英語表記）cerebellar ataxia

A condition in which movement cannot be performed smoothly due to damage to the cerebellum and the brainstem and spinal cord, which are closely connected to it. When standing up, the body is unstable and swaying, so the feet are spread wide apart. When walking, the movements of the arms and legs are uncoordinated and the patient staggers with the legs apart, as if drunk (intoxicated gait). Also, when trying to reach something, the hand cannot reach it quickly, and it shakes jerkily (motor disorganization) or goes too far (metria). Repetitive movements such as pronation and supination of the hand are very awkward and take a long time (conversion movement disorder).

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

小脳およびそれと密接な連絡をもつ脳幹･脊髄の障害により運動を円滑に遂行できない状態。起立時に体が不安定で動揺するため足を広く開く。歩行も手足の動きがばらばらで協調がとれず，開脚で酔ったときのように千鳥足となる(酩酊歩行)。また物を取ろうとしてもさっと手が届かず，ぎくしゃくと振れたり(運動解体)，行きすぎたりする(測定障害)。手の回内･回外などの反復運動は非常にぎごちなく時間がかかる(変換運動障害)。

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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