A Practical Approach Causes of Urticaria and
Angioedema:
Common Causes of Urticaria and Angioedema:
Immunologic causes
Type I IgE-mediated
Foods: tree nuts, legumes, crustacea, mollusks, fish, eggs, milk, soy, wheat
Organic substances: preservatives, latex, hymenoptera venom
Medications: penicillin, cephalosporin, aspirin, NSAIDs
Aeroallergens: dust mites, pollens, molds, animal dander
Type II cytoxic antibody-mediated: transfusion reaction
Type III antigen-antibody mediated: serum sic