Rash
Red, blotchy skin eruptions that may start on the face and spread to the rest of the body.
Fever
Elevated body temperature that often accompanies other symptoms of an allergy.
Swelling
Localized swelling around the injection site or other parts of the body.
Difficulty Breathing
Shortness of breath or wheezing, indicating a possible severe allergic reaction.
Hives
Raised, itchy welts on the skin that can appear suddenly.
Anaphylaxis
A severe, potentially life-threatening allergic reaction that requires immediate medical attention.