What are the signs and symptoms of anaphylaxis?

Updated: May 16, 2018
  • Author: S Shahzad Mustafa, MD; Chief Editor: Michael A Kaliner, MD  more...
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Answer

Anaphylactic reactions almost always involve the skin or mucous membranes. Greater than 90% of patients have some combination of urticaria, erythema, pruritus, or angioedema. In the Memphis study, for example, 87% of patients had urticaria and/or angioedema. [29] Other retrospective studies have reported similar rates of mucocutaneous involvement.

Children, however, may be different. An Australian study evaluated 57 children under age 16 years who presented to a pediatric emergency department (ED) over a three-year period. Cutaneous features were noted in 82.5%, whereas 95% had respiratory symptoms. The reasons why a lack of dermal findings would be more common in children than in adults are not well understood.


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