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Table 1 Forms of Angioedemas without wheals

From: Idiopathic non-histaminergic acquired angioedema: a case series and discussion of published clinical trials

Hereditary angioedemas
HAE with C1-inhibitor deficiency (C1-INH_HAE)
HAE with FXII mutations (FXII-HAE)
HAE of unknown origin (U-HAE)
Acquired angioedemas
Idiopathic histaminergic acquired angioedema (IH-AAE)
Idiopathic non-histaminergic acuired angioedema (InH-AAE)
Acquired angioedema related to angiotensin-converting enzyme inhibitor (ACEi-AAE)
Aquired angioedema with C1-inhibitor deficiency (C1-INH-AAE)
  1. Modified from Cicardi et al. [4]