A CASE OF URTICARIA DUE TO COCHINEAL DYE IN RED-COLORED DIET

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  • 食品中のコチニール色素による蕁麻疹の1例
  • 症例報告 食品中のコチニール色素による蕁麻疹の1例
  • ショウレイ ホウコク ショクヒンチュウ ノ コチニール シキソ ニ ヨル ジンマシン ノ 1レイ

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Abstract

We herein describe a 33-year-old female who recurrently exhibited urticaria accompanied by vomiting, diarrhea and dyspnea after taking red-colored food. From her history, we suspected the cochineal dye, the commonly used natural red dye in red-colored food and beverage, to be the cause of her symptoms. Oral provocation test using cochineal dye-stained red-colored boiled-fish-paste induced urticaria and respiratory symptoms. Furthermore the prick tests and the scratch tests with cochineal dye and carminic acid, the major ingredient of cochineal dye, were also positive. These results indicate that type 1 allergy to cochineal dye caused urticaria in this patient. Thereafter, she avoided the foods containing a cochineal dye and showed a complete clinical remission. Recently, the number of literatures described about increased incidence of type 1 allergy to cochineal dye. As the usage of cochineal dye is increasing in the Japanese market, we should keep in mind that cochineal dye can be a cause of urticaria in daily practice.

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