The nurse is reviewing discharge instructions for a client starting a new medication. The client asks the nurse "how would I know if I to this medication The best response by the nurse is

A. "Most allergic responses include hives or a rash.": Allergic reactions often present with hives (urticaria), rash, itching, and sometimes anaphylaxis. Severe reactions can cause airway swelling, difficulty breathing, and hypotension. B. "Common allergic reactions may include fever and diarrhea." Fever and diarrhea are more typical of infections, not allergic reactions. C. "You might feel cold and sweaty if you are having an allergic reaction." Cold, clammy skin may indicate shock, but it is not specific to allergies. D. "Nausea and vomiting usually mean you are allergic to the medication." GI symptoms may indicate intolerance but not necessarily an allergy.