Abstract
We report a case of anaphylaxis caused by ingestion of crushed jelly supplement packaged in a pouch. An 18-year-old male developed wheezing, dyspnea, wheal, facial edema and impaired consciousness while middle distance running one hour after taking lunch and plural supplements. The results of skin tests for royal jelly which was a component of one of those supplements, were positive. Induction test with crude royal jelly was performed. Then he developed wheezing and dyspnea and his peak expiratory flow velocity was reduced thirty minutes later. Exercise alone did not induce asthma or anaphylaxis. This case was diagnosed as anaphylaxis due to royal jelly in the crushed jelly supplement. This case was caused by type I allergy, nevertheless passing-time from ingestion of royal jelly as the allergen to the appearance of allergic symptoms was longer than the typical time for such cases. It was speculated that anaphylaxis due to allergen in jelly products was induced later than anaphylaxis due to allergen retained in the original form, because the jelly products were digested and absorbed in the alimentary tract slowly. Although crushed jelly food products packaged in a pouch have become popular in Japan, case reports of severe allergic reactions due to these products are rare.
