Side effects of the urticaria vaccine

Possible side effects of the measles vaccine mainly include: 1. Fever: The vaccine may stimulate the body's immune system, leading to abnormal function of the temperature regulation center and resulting in fever. This fever typically ranges from low-grade to high-grade and usually lasts no more than 3 days. 2. Swelling: Incomplete scabbing at the injection site may allow exposure to external bacteria, causing swelling. In such cases, appropriate medication may be needed. 3. Allergic reactions: Some individuals may develop an immune response to active or protein components in the vaccine, leading to allergic manifestations such as hives or rashes. Severe allergic reactions require immediate medical attention. 4. Other reactions: Rare side effects may include atypical measles syndrome or allergic purpura. Although these reactions are uncommon, prompt medical care is necessary if they occur.