Regarding the cause of this situation, it is considered that urticaria is caused by allergies, and there may be infection problems at present.

Guiding opinions:

It is suggested to check first to see the specific situation. If it is only caused by allergies, it is necessary to consider anti-allergic treatment, such as using drugs such as chlorpheniramine and vitamin C. If it is serious, it is also necessary to use glucocorticoids appropriately. Then there is the prevention and treatment of infection.