Patients with severe polyethylene glycol (PEG) allergies face broad challenges, especially when presenting to the hospital for surgery, as PEG is used often as an excipient in medications and in medical supplies. Although rare, this allergy is increasingly reported and likely underdiagnosed. We present a patient with known past anaphylactic reaction to PEG and a detailed account of her perioperative course. More broadly, we provide recommendations and resources for the safe management of similar patients with a severe PEG allergy.
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