3 sentences

1. 医生在看准病症后才开始下药。

   yī​shēng zài kàn​zhǔn bìng​zhèng hòu cái kāi​shǐ xià​yào.

   The doctor only prescribed medication after accurately identifying the condition.

   Source: Dong Chinese Dictionary

2. 治疗感冒时，一定要按照病症对症用药。

   zhì​liáo gǎn​mào shí, yī​dìng yào àn​zhào bìng​zhèng duì​zhèng yòng​yào.

   When treating a cold, be sure to use medication appropriate to the symptoms.

   Source: Dong Chinese Dictionary

3. 这种罕见的病症在医学界引起了广泛关注。

   zhè zhǒng hǎn​jiàn de bìng​zhèng zài yī​xué​jiè yǐn​qǐ le guǎng​fàn guān​zhù.

   This rare condition has drawn widespread attention in the medical community.

   Source: Dong Chinese Dictionary