Fifty-six-year-old man with anaphylaxis: A novel delayed food hypersensitivity reaction

J Ark Med Soc. 2015 Nov;112(7):110-2.


Anaphylaxis and urticaria are commonly seen in both primary care and allergy clinics. Foods, drugs, and insects are frequent culprits for immediate reactions; however, the trigger for recurring and/or chronic episodes is often unclear. We present a 56-year-old male with recurrent symptoms of urticaria, angioedema, and anaphylaxis found to be triggered by sensitization to galactose-alpha 1, 3-galactose (alpha-gal), a novel food allergen.

Publication types

  • Case Reports

MeSH terms

  • Anaphylaxis / complications
  • Anaphylaxis / diagnosis*
  • Anaphylaxis / immunology*
  • Animals
  • Disaccharides / immunology*
  • Humans
  • Immunoglobulin E / blood
  • Male
  • Meat / adverse effects*
  • Middle Aged
  • Swine
  • Tick Bites / complications
  • Tick Bites / immunology
  • Urticaria / etiology*


  • Disaccharides
  • galactosyl-(1-3)galactose
  • Immunoglobulin E