Recurrent Abdominal Pain

  • Michelle Korah-SedgwickEmail author


Hereditary angioedema (HAE) is characterized by episodic, recurrent bouts of isolated angioedema

Laboratory diagnosis for types I and II HAE requires a low C4 and low C1 esterase inhibitor (C1-INH) antigenic levels

C4 levels are inherently low in children younger than 12 months of age

The angioedema in HAE and AAE is bradykinin-mediated, not histamine-mediated, and is therefore unresponsive to histamine blockade

Recombinant or plasma-derived C1-INH is first-line treatment for acute HAE attacks

Up to 25% of HAE are due to de novo mutations, hence absence of family history should not delay evaluation for HAE


Hereditary angioedema C1 esterase inhibitor Bradykinin 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Section of Pulmonary/Critical Care & Allergy/Immunology, LSU Health New OrleansNew OrleansUSA
  2. 2.Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN)New OrleansUSA

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