Approaching the patient with penicillin allergy: Practical Advice.
Patient’s age at time of rxn?
Does the pt. recall the rxn? If not, who told them about it?
How long after receiving PCN did the rxn begin?
What were the characteristics of the reaction?
What was the route of administration?
Why was the pt. taking PCN?
What other meds were they taking? Why & When given?
What happened when the PCN was stopped?
Has the pt. taken abx similar to PCN before or since the rxn? (amox, amp, cephalosporins) If yes, result?