• Allergic (IgE) reactions are type I hypersensitivity reactions^8,9
  • These reactions are mediated by IgE antibodies
• When exposed to an allergen (a molecule causing an allergic reaction) the body mounts an IgE mediated response
  • Clinical symptoms occur within minutes (<2 hours)
  • They range from mild (allergic rhino-conjunctivitis, atopic eczema and gastrointestinal) to severe (asthma, anaphylactic shock the most severe) ⁹
• Food IgG reactions are type III hypersensitivity reactions
  • These reactions are mediated by IgG antibodies
• The body mounts an IgG mediated response
  • Characteristically the response is delayed, symptoms occurring within hours to days ^2,7

Summary table showing Food IgE Allergy vs. Food IgG Reaction