RESUMO
AIMS: The chronic urticaria and the angioedema affect to the population's wide sectors and up to now their cause is ignored. MATERIAL AND METHOD: They were studied during one year 50 mature patients with chronic urticaria coming from the ambulatory consultation of the service of alergología of the Hospital CQ Hermanos Ameijeiras. The diagnosis of chronic urticaria settled down clinically for observation of the lesions and for the time of its evolution that should exceed six weeks. It was included as group witness to 26 healthy individuals. RESULTS: They were high levels for the IgE seric in the patients' 70%; you even normal of IgA, IgG and IgM in the great majority of the cases. The determination of circulating immunocomplexs gave negative in 88% of the sick and only positive in 12%. The tests for cutirreacción with extracts alergénicos micóticos, in reading at the 48 hours, were not negative in a significant way, among the group of sick and in the group witness.