You cough when it's cold.

This is an irritating cough caused by cold, which is a kind of allergic cough.

The method of prevention is:

1, keep warm, and you can wear a mask when you go out in the morning to prevent cold air from being inhaled.

2. Drug prevention: Taking chlorpheniramine orally every night can relieve your cough symptoms.

Inhale budesonide aerosol once every morning, and you can say goodbye to your cough.

4, consciously improve the cold resistance, such as washing your face with cold water and soaking your feet will enhance your physical fitness.

I hope my answer is helpful to you.