致ち死し性せい家か族ぞく性せい不ふ眠みん症しょう

noun

fatal familial insomnia; FFI

A rare inherited prion disease causing progressive insomnia and neurodegeneration. Used in medical contexts.

• 致ち死し性せい家か族ぞく性せい不ふ眠みん症しょうはプリオン病びょうの一いっ種しゅです。

  Fatal familial insomnia is a type of prion disease.