[Urticaria vasculitis and sulfone, a case report].

Systemic corticosteroids play a predominant role in the treatment of urticarial vasculitis (U.V.). If steroids are contraindicated, there may be applied a variety of pharmacologically different compounds. A female patient suffering from U.V. and metabolic syndrome, who had not shown any positive response to indomethacin, H1 and H2 antagonists, or colchicine, was treated with dapsone. As a result, the clinical symptoms improved within a few days and her hypocomplementemia normalized. We discuss the possible mechanisms of action of sulphones in U.V.