逆ぎゃっ向こう性せい健けん忘ぼう

noun

retrograde amnesia

Medical term for loss of memories from before a brain injury or disease onset.

• 事じ故この後あと、彼かれは逆ぎゃっ向こう性せい健けん忘ぼうで過か去こ数すう年ねんの記き憶おくを失うしなった。

  After the accident, he lost memories of the past few years due to retrograde amnesia.