Types of hypersensitivity reactions Type I - lgE-Mediated, Within I Hour (Anaphylaxis) Type II - IgG or IgM Cytotoxic, Hours to Days (Hemolytic Anemia) Type Ill - Immune Complex-Mediated, 1-3 Weeks (Serum Sickness) Type IV T-Cell-Mediated, Days to Weeks (Rash, SJS) - Amelia Furbish PharmD Student @ https://www.instagram.com/happypillsrx/ #hypersensitivity #reactions #Types #Classification #Allergy #Diagnosis