Question -How does angioedema differ from allergy?
Answer- The cited article notes as follows: “Angioedema is differentiated from allergy (mediated by histamine) by its localized and often unilateral pattern at onset, depth of swelling and discomfort, rather than itch. It is also insensitive to antihistamine and steroids and only marginally sensitive to epinephrine.” (Volans A and Ferguson R. Using a bradykinin blocker in ACE inhibitor-associated angioedema in the emergency department. 2013 BMJ Case Rep. Published online. Doi:10.1136/bcr-2012-008295)
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