Urticaria is mainly an allergic skin disease. If the disease lasts for more than 6 weeks, it is considered chronic urticaria and can be treated with BCG polysaccharide nucleic acid injection to improve immunity, as well as thymopentin and interleukin to improve immunity. But the main thing is to take oral antihistamines such as loratadine, cetirizine, fexofenadine and so on. If the duration of the disease does not exceed 6 weeks, that is, less than 6 weeks, it is considered acute urticaria. If there is no chest tightness, wheezing, abdominal pain, diarrhea and other symptoms, there is no need for injection treatment, and oral anti-allergy drugs such as loratadine, cetirizine and so on can be taken. If there are systemic symptoms such as chest tightness, wheezing, diarrhea, diarrhea, etc., it is recommended to give injection treatment, you can give dexamethasone, methylprednisolone, etc.