[Sensitization to Parietaria pollen. An unsuspected cause of pollinosis in our environment]. / Sensibilización al polen de Parietaria. Causa insospechada de polinosis en nuestro medio.

Our objective is to know the incidence and characteristics of the sensitization to the pollen of Parietaria in the area of Bilbao. In a sample of 380 patients unselected, they have been achieved skin tests with Parietaria J. It has been found a sensitivity incidence of 4.2% of the total sample, and an incidence of 12% in relation to the number of patients with pollinois. A good correlation has been observed between the results of the skin tests and the RAST. The high levels of pollilisation (100 g/m3, on the 12th of August) and the incidence of the sensitization, show that the pollen of Parietaria is an important allergen in our area.