Clinical Characteristics and Pattern of Skin Test Reactivities in Shellfish Allergy Patients in Hong Kong
Authors: Wu, Adrian Y.; Williams, Gray A.
Source: Allergy and Asthma Proceedings, Volume 25, Number 4, July-August 2004 , pp. 237-242(6)
Publisher: OceanSide Publications, Inc
Abstract:Allergens from crustaceans and mollusks exhibit extensive cross-reactivity in vitro. However, the degree and pattern of crossreactivity between different shellfish species in vivo is still unclear. The objective of this study was to determine the clinical characteristics of shellfish allergic patients in Hong Kong and the pattern of skin test reactivities to the different species. This cohort study involves patients attending the allergy clinic of a large teaching hospital for suspected shellfish allergy. Each subject underwent skin-prick tests to eight species of shellfish and house-dust mites. Eighty-four consecutive patients were tested. Twenty-eight patients reported a history of severe anaphylaxis. Fourteen patients had no positive shellfish skin test and were excluded. There were 183 positive shellfish skin tests, with an average of 2.61 positive tests per subject. Ninety percent of subjects also had positive skin tests to house-dust mites. Overall, 65.7% of subjects had more than one positive skin test to shellfish. There were strong statistical associations between species belonging to the same order but also between some mollusks and crustaceans. We found a high degree of skin test cross-reactivity between different species of shellfish and between shellfish and house-dust mites. Therefore, patients with a history of shellfish allergy should be cautious with all types of shellfish.
Document Type: Research Article
Publication date: 2004-07-01
- Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.
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Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.
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