The incidence of chronic urticaria (CU), an idiopathic, heterogeneous condition, is increasing. Despite many studies, there is still uncertainty about the etiology of a large subset of CU.
In the last year or so, 2 French studies of CU have been published in the ARCHIVES,1,2 both reporting the lack of association between CU and 2 distinct conditions (hepatitis C virus [HCV] infection and hypocomplementemia) previously found to be correlated with CU. We completely agree with both reports.
Zauli D, Deleonardi G, Grassi A, et al. Chronic Urticaria. Arch Dermatol. 2001;137(4):504–505. doi:
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