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?

Question

Quizplus · Accepted Answer

Eductional Objective: First-generation antihistamines can cause significant side effects due to blockade of cholinergic, alpha-adrenergic, and serotonergic pathways.  They should be avoided in older patients with cognitive or functional impairments.

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