場ば面めん緘かん黙もく症しょう

noun

selective mutism

A clinical term for an anxiety disorder where a person who is normally capable of speech does not speak in specific social situations.

• 場ば面めん緘かん黙もく症しょうの子こどもは、家いえでは話はなせるのに学がっ校こうでは話はなせないことがある。

  A child with selective mutism may be able to speak at home but not at school.