Abstract
A 14-year-old girl presented to our hospital with food-dependent exercise-induced anaphylaxis (FDEIA), possibly caused by rice. Despite experiencing four previous episodes of suspected FDEIA, she did not seek medical attention at her own discretion. On the fifth occurrence of symptoms, the general practitioner suspected FDEIA and referred the patient to our hospital. The only common factor in all five episodes was the consumption of rice, leading to the examination of the patient under suspicion of FDEIA caused by rice. Skin prick test results were positive for bran and polished rice, and exercise after consumption of polished rice resulted in anaphylaxis. Therefore, we diagnosed FDEIA caused by polished rice. Immunoblotting confirmed the presence of immunoglobulin E reacting with 14-16kDa rice bran protein in the patient's serum. The immunoblot inhibition test suggested that the rice bran protein to which the patient's serum reacted was also present in polished rice and no wash rice. As the patient may experience FDEIA after ingestion of no wash rice or rice flour, she was advised to eliminate these from her diet, treating them similarly to brown rice or polished rice.
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