How to deal with cough when staying up late

Patient's question:

In the past two days, every night while sleeping, for about an hour, I always cough twice, each time with two or three coughs. The rest of the time I'm fine until morning.
Past treatment history and effectiveness: Everything else is fine, so there was no treatment.
What kind of help do you want: Could this be a symptom of a medical condition?

Doctor's answer:

Respiratory symptoms require early intervention if they reappear
1. Respiratory symptoms require early intervention if they reappear
2. Based on your situation, you are 4 years old, and in the past two days, you have been taking naps every night. Within about an hour, you cough twice, each time with two or three coughs. The rest of the time you are fine until morning. This situation may be related to dry air.
3. Recommendations:
1) Drink some water before going to bed every night.
2) Give some Huanghuanglian oral liquid.
3) If the symptoms persist, it is recommended to go to the hospital to check for a respiratory infection.