Lesson 22. Penicillin Allergy Table of ContentsPenicillin AllergyReferencesTables PDF ShareReferencesGonzalez-Estrada A, Radojicic C. Penicillin allergy: A practical guide for clinicians. Cleve Clin J Med. 2015;82:295-300.[PubMed Abstract] - Tables Table 1.Gell and Coombs Classification of Hypersensitivity Reactions Type of Reactions Hypersensitivity Mediated by Time of Onset Examples IgE-mediated Type I IgE antibodies Within 1 hour Anaphylaxis Non-IgE-mediated Type II Cytotoxic Hours to days Hemolytic anemia Non-IgE-mediated Type III Immune complex 7-21 days Serum sickness Non-IgE-mediated Type IV Cell-mediated Days to weeks Maculopapular rash Stevens-Johnson syndrome Toxic epidermal necrolysis IgE = immunoglobulin E Source: Gonzalez-Estrada A, Radojicic C. Penicillin allergy: A practical guide for clinicians. Cleve Clin J Med. 2015;82:295-300. [PubMed Abstract] Share by e-mail From:Enter your e-mail address To: Enter the e-mail address of the recipient Your Message: Check-On-LearningQuestionsThe Check-on-Learning Questions are short and topic related. They are meant to help you stay on track throughout each lesson and check your understanding of key concepts.You must be signed in to customize your interaction with these questions. Funded by Centers for Disease Control and Prevention (CDC) Created at Part of CME provided by CNE approved by Since you've received 80% or better on this quiz, you may claim continuing education credit. You seem to have a popup blocker enabled. If you want to skip this dialog please Always allow popup windows for the online course. Current Version: nstdc-monorepo-499912e8-2026-02-26-231421 Sign In Register for new account Email address Please provide a valid email address. Password Please provide your password. Forgot password? Cancel Sign In Become a New User Account Registration Benefits: Track your progress on the lessons Earn free CNE/CME/CE Earn Certificates of Completion Access to other free IDEA curricula Create a free account to get started Register