[Treatment of chronic urticaria with ketotifen].

Ketotifen, an inhibitor of the mastocytes degranulation is used in the treatment of allergic asthma. The use of this drug in chronic urticaria is proposed because histamine play a major role in the production of the lesions. In this study, 36 patients with chronic urticaria of various aetiology are treated with ketotifen (2 mg/d). 12 patients were healed, 11 good results and 12 failure were obtained. The best results are obtained in cold urticaria and in food related urticaria. This result were compared with data concerning the treatment of chronic urticaria.