Pharmacology · single question
After a reported penicillin allergy, which symptom would most strongly confirm a TRUE (IgE-mediated) allergic reaction?
Show answer and explanation
Correct answer: C. Urticaria/rash
True IgE-mediated drug allergies present with signs like urticaria, rash, angioedema, bronchospasm, or anaphylaxis. GI symptoms such as nausea, vomiting, and diarrhea are common medication side effects but are not specific markers of a true allergic reaction.