Abstract
We aim to examine the characteristics of the symptoms induced by exercise provocation tests following allergen consumption in patients who have undergone oral immunotherapy (OIT). Patients who were positive for exercise provocation tests in Miyagi Children's Hospital from April 2012 to January 2019 were retrospectively analyzed. Patients were classified into food-dependent exerciseinduced anaphylaxis (FDEIA) group and post-OIT-FDEIA group. Six patients in the FDEIA group and 19 patients in the post-OIT-FDEIA group were analyzed. There were no significant differences in age, sex, and number of complications between the FDEIA and post-OIT-FDEIA groups, except for level of total serum immunoglobulin E. The median time from the start of exercise to onset of symptoms was 20 min in the FDEIA group and 25 min in the post-OIT-FDEIA group. The rate of adrenaline administration in post-OIT-FDEIA group was significantly lower. The median time from exercise to onset of severe symptoms requiring adrenaline was 32.5 min in the FDEIA group and 25 min in the post-OIT-FDEIA group. These data suggest that FDEIA and post-OIT-FDEIA patients can exhibit similar clinical symptoms, and all symptoms occurred in 60 minutes after exercise.
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