17 years old, male, diagnosed as urticaria by the doctor. A year ago, his mouth and lips were swollen almost once a month. Two months ago, his arms and thighs seemed to have edema.

Urticaria is a disease characterized by systemic or local skin itching or large-area maculopapular rash, which can be divided into acute and chronic, and can be divided into hot urticaria and cold urticaria according to the cause. Cold urticaria belongs to urticaria, but the cause of cold urticaria is caused by catching cold.

Suggestion:

It is suggested to avoid contact with cold rooms as much as possible, especially when it is hot, you can't blow into the air conditioner, and pay attention to cold and warmth when it is cold.