A nurse is collecting data from a client following the administration of a new medication. Which of the following findings should the nurse identify as a manifestation of an allergic reaction?

A. Jaundice. Jaundice, or yellowing of the skin and eyes, is a sign of liver dysfunction and may indicate hepatotoxicity rather than an allergic reaction. Some medications can cause drug-induced liver injury (DILI), but jaundice is not a typical symptom of an immediate hypersensitivity reaction. B. Urticaria. Urticaria (hives) is a classic allergic reaction that appears as raised, red, itchy welts on the skin. It occurs due to the release of histamine in response to an allergen, which increases capillary permeability and leads to swelling and itching. Urticaria may be accompanied by angioedema, respiratory distress, or anaphylaxis, requiring immediate intervention if severe. C. Bradycardia. Bradycardia (slow heart rate) is not a typical manifestation of an allergic reaction. While anaphylaxis can cause hypotension and tachycardia due to systemic vasodilation, bradycardia is more commonly associated with beta-blockers, heart block, or vagal stimulation rather than an allergic response. D. Hypertension. Allergic reactions, especially severe ones like anaphylaxis, typically cause vasodilation and hypotension, not hypertension. While stress or anxiety related to an allergic episode may lead to a temporary rise in blood pressure, persistent hypertension is not a direct sign of an allergic reaction.