[Results of skin tests with pollen extracts of fruit trees in patients with pollen allergy].

As there have recently been increasing publications on the correlation between tree pollen allergy and fruit allergy, we asked ourselves wether this might be caused by the parallel pollen times of Fagales trees and Rosales trees in our Central European climate. Accordingly, we tested 92 patients positively suffering from Fagales tree pollen allergy with the following Rosales tree pollen extracts: apple, cherry, plum, apricote, almande. 16 out of these patients showed reactions to Fagales pollen but not to Rosales pollen. All the other 76 patients revealed reactions to both the tested pollen extracts. Since these results show our thesis to be false, we have to assume a related (minor) antigen of both tree pollen groups.