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Anaphylaxis

Prevalence
Causes
Clinical features
Differential diagnosis
Investigations
Therapy
Prevention
Prognosis
Clinical features

Common symptoms include: c   
  • respiratory symptoms (wheeze, breathlessness)
  • cardiovascular symptoms (hypotension, arrhythmia)
  • swelling or angioedema
  • pruritus
  • gut symptoms (diarrhoea , vomiting)

Note:

Common symptoms include angioedema, bronchospasm, and hypotension

Symptom %
(95% CI)
angioedema c   87%
(82% to 92%)
bronchospasm  58%
(50% to 65%)
hypotension  52%
(44% to 59%)
pruritus  47%
(39% to 54%)
vomiting  31%
(25% to 38%)
conjunctivitis  19%
(13% to 24%)
diarrhoea  5.8%
(2.3% to 9.3%)
 

Expiry date: September 2004
Levels of Evidence used in grading these guides

Authors   M   Bennett , RS   Phillips
Reviewer   M   Daniel
CAT Writers   CM   Ball , M   Bennett