Contact Urticaria Syndrome Differential Diagnoses

Updated: Jan 30, 2020
  • Author: Shweta Shukla, MD; Chief Editor: Dirk M Elston, MD  more...
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Diagnostic Considerations

Conditions to consider in the differential diagnosis of contact urticaria include the following:

  • Hereditary angioedema
  • Physical urticarias such as aquagenic urticaria, cold urticaria, and solar urticaria
  • Protein contact dermatitis
  • Allergic contact dermatitis 
  • Irritant contact dermatitis 
  • Dermatographism 
  • Erythema multiforme
  • Scombroid fish poisoning
  • Asthma, allergic rhinitis, allergic conjunctivitis, and anaphylaxis
  • Autoimmune disease
  • Malignancy 

Differential Diagnoses