We experienced two cases of immediate allergy due to anisakis.
Case 1: A 30-year-old man ingested a boiled mackerel, two hours after which he developed urticaria and dyspnea. Six hours later, these symptoms had diminished. He consulted our hospital several days after that. He had three urticaria episodes after ingestion of mackerel. Serum Immuno CAP was positive for anisakis, but negative for mackerel or sardine.
Case 2: A 71-year-old woman ingested a boiled flatfish for dinner. The next morning she noticed pharyngeal edema and dyspnea. She came to our hospital and one day after treatment with steroids and antibiotics, her symptoms had resolved. Serum Immuno CAP was positive for anisakis.
These two cases show that, patients diagnosed as having a fish-related or idiopathic allergy should be examined for evidence of Anisakis-induced allergy.
