2 sentences

1. 这种病在医学上被称为歇斯底里。

   zhè zhǒng bìng zài yī​xué shàng bèi chēng​wéi xiē​sī​dǐ​lǐ.

   This disease is known as hysteria in medicine.

   Source: Dong Chinese Dictionary

2. 他的反应非常歇斯底里，让大家都很吃惊。

   tā de fǎn​yìng fēi​cháng xiē​sī​dǐ​lǐ, ràng dà​jiā dōu hěn chī​jīng.

   His reaction was very hysterical, which surprised everyone.

   Source: Dong Chinese Dictionary