A nurse is preparing to administer the initial dose of penicillin G IM to a client. The nurse should monitor for which of the following as an indication of an allergic reaction following the injection?

D. Urticaria is a classic sign of an allergic reaction to penicillin and other medications. It typically appears within minutes to hours after exposure and is often accompanied by itching.A Dyspepsia is typically not associated with an allergic reaction to penicillin. It is more commonly related to gastrointestinal issues such as acid reflux or gastritis.B. Bradycardia is not a typical manifestation of an allergic reaction to penicillin. Allergic reactions usually involve cardiovascular symptoms such as tachycardia (rapid heart rate) rather than bradycardia.C. Pallor can occur as part of an allergic reaction, especially in more severe cases where there may be vasodilation or decreased blood flow to the skin. It can be an early sign of anaphylaxis. However, it is not a typical sign of an allergic reaction.