Vaccination is not recommended during the onset of urticaria, but the necessity of some vaccines that are time-limited and have a high risk of preventing the disease needs to be weighed against the need for vaccination, as prescribed by the doctor.
Vaccination is not recommended during an acute attack of urticaria. During this period, the body is in a state of hypersensitivity and vaccines are a class of allergy-inducing substances, so vaccination is not recommended.
However, it should be noted that some vaccines have a time limit for post-exposure vaccination, and the diseases they target are more serious and may be life-threatening once the disease develops, e.g., tetanus vaccine, rabies vaccine, etc., then you need to assess the level of exposure under the guidance of your doctor, weigh the need for vaccination and the associated risks, and vaccinate in time even when you are in the midst of an attack of urticaria, or wait until your urticaria is relieved and controlled if you can. If it is possible to wait, vaccination should be given after the urticaria has subsided and is under control.
In conclusion, patients with urticaria who have the need for vaccination should decide whether they need to be vaccinated in time under the guidance of a professional doctor, and should not make blind judgments and dispose of the vaccine on their own to avoid adverse consequences.