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. 2017 Nov;37(4):643-662.
doi: 10.1016/j.iac.2017.07.001. Epub 2017 Sep 1.

Penicillin and Beta-Lactam Hypersensitivity


Penicillin and Beta-Lactam Hypersensitivity

Daniel Har et al. Immunol Allergy Clin North Am. .


Ten percent of patients report penicillin allergy, but more than 90% of these individuals can tolerate penicillins. Skin testing remains the optimal method for evaluation of possible IgE-mediated penicillin allergy and is recommended by professional societies, as the harms for alternative antibiotics include antimicrobial resistance, prolonged hospitalizations, readmissions, and increased costs. Removal of penicillin allergy leads to decreased utilization of broad-spectrum antibiotics, such as fluoroquinolones and vancomycin. There is minimal allergic cross-reactivity between penicillins and cephalosporins. IgE-mediated allergy to cephalosporins is usually side-chain specific and may warrant graded challenge with cephalosporins containing dissimilar R1 or R2 group side chains.

Keywords: Allergy; Beta-lactam; Hypersensitivity; Penicillin.

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