[Aquagenic urticaria. A case report].

A 38-year-old woman presented with recurrent episodes of urticaria after contact with water affecting the upper part of the body. We confirmed the diagnosis of aquagenic urticaria. Aquagenic urticaria is a rare form of contact urticaria with small wheals generally affecting the upper part of the body. It has to be distinguished from aquagenic pruritus. The pathogenetic mechanisms are not known in detail. Treatment with antihistamines, ultraviolet therapy or application of protective hydrophobic barrier creams could be effective.