Related Experiment Video
Updated: Aug 8, 2026

Basophil Activation Test for Allergy Diagnosis
Published on: May 31, 2021
Food-induced anaphylaxis caused by ingestion of royal jelly
Hideto Takahama1, Takekazu Shimazu
1Division of Dermatology, Machida Municipal Hospital, Tokyo, Japan. byoin010@city.machida.tokyo.jp
Abstract:
We report a case of food-induced anaphylaxis caused by ingestion of royal jelly. After taking royal jelly and several other medicinal products, a 33-year-old Japanese male developed severe facial pruritus and erythema, followed by vertigo, numbness in his fingers, generalized pruritus, wheals, dyspnea, wheezing and impaired consciousness. He was treated with corticosteroid and fluid therapy, and his symptoms subsided. Upon allergy testing, his only positive reaction was to royal jelly. Given the clinical symptoms and the positive prick test to royal jelly, a diagnosis of anaphylaxis due to the ingestion of royal jelly was made. In this paper, we describe this case and review the relevant published work.
Related Concept Videos
Allergic Reactions: Anaphylaxis
Allergic Reactions
Allergic Drug Reactions
Drug Toxicity: Allergic Reactions
Hypersensitivities
Types of Hypersensitivities
Hypersensitivity reactions are categorized into four types: Type 1, Type 2, Type 3, and Type 4. Each type has a distinct mechanism...
Antibody Structure
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...

