A 22-Year-Old Man Comes to the Emergency Department Because of the Onset

A 22-year-old man comes to the emergency department because of the onset of a pruritic rash after 1 hour after eating some trail mix. He does not have shortness of breath or hoarseness. He has never had a similar episode before. He has asthma treated with an albuterol inhaler, which he uses less than once a month. His pulse is 90/min, respirations are 25/min, and blood pressure is 125/80 mm Hg. Pulse oximetry on room air shows an oxygen saturation of 99%. He also has a history of allergy to dog and cat dander. Which of the following would be the most appropriate medication to treat this patient's acute symptoms?

A) Chlorpheniramine
B) Diphenhydramine
C) Hydroxyzine
D) Loratadine
E) Promethazine

Correct Answer:

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