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I believe the term urticarial dermatitis caught on quickly with clinicians in Australia because the clinical picture of patients with the histologic features reported by Kossard et al¹ has urticarial and eczematous features that vary in intensity over time, creating an oxymoronic quality that the name they coined captures nicely. The authors mention contact sensitivity as a mechanism capable of producing urticarial plaques, and Fung² described a case of contact dermatitis to nickel that produced a solitary urticarial plaque with the histologic traits of a dermal hypersensitivity reaction that he termed urticarial papulosis. Kossard et al¹ acknowledge that Fung² has described the same process. More than 20 patients with such symptoms have been referred to me for patch testing, and I have yet to find a relevant contact allergen to account for the condition. The histologic traits in the cases I have evaluated have been more consistent with Fung's . . . [Full Text of this Article]

AUTHOR INFORMATION
Robert L. Rietschel, MD

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