1.Excuse me, I have selective mutism, a recognized medical disorder.

不好意思，我这是选择性缄默症，被鉴定为是病。

2.Later on, I was diagnosed with Asperger syndrome, OCD and selective mutism.

来，我被诊断出患有阿斯合症、强迫症和选择性缄默症。机翻

3.They could completely stop moving and remain still in a certain posture for long periods of time, which is called mutism and stupor.

他们可以完全停止活动，长时间保持某种姿势不动，这被称为缄默症和麻木症。