• 1 Department of Dermatology, Hospital Kuala Lumpur, Ministry of Health, Kuala Lumpur, Malaysia
  • 2 Department of Dermatology, Hospital Kuala Lumpur, Ministry of Health, Kuala Lumpur, Malaysia,
  • 3 Allergy and Immunology Research Centre, Institute for Medical Research, Ministry of Health, Kuala Lumpur, Malaysia
Int Arch Allergy Immunol, 2021;182(2):153-157.
PMID: 32927463 DOI: 10.1159/000510314


BACKGROUND: Seafood is an important source of nutrition in Asia. However, it was believed to cause or aggravate atopic dermatitis (AD).

OBJECTIVES: We aim to determine relevant seafood sensitization among adults with AD and investigate cross-sensitization to aeroallergens.

METHODS: One hundred thirty-two adults with AD who were subjected to skin prick test (SPT) with 7 common local seafood allergens (anchovy, tuna, mackerel, squid, giant freshwater prawn, shrimp, and crab), house dust mites (HDMs), and cockroach were analyzed retrospectively.

RESULTS: The median age of the study subjects was 32 years (range 17-77 years) with a male to female ratio of 1:3. The mean duration of AD was 16 years. Eighty-two patients (62.2%) had other atopic conditions. Using SCORAD, 44.7% had mild, 42.4% moderate, and 12.9% severe disease. Eighty-six patients (65.2%) self-reported to have seafood allergy, with the main symptoms of transient pruritus and erythema within 2 h of ingestion. SPT revealed 51.5% of the patients were sensitized to at least 1 of the 7 seafood allergens. The relevant sensitization rate was 45.1%. Interestingly, 46% of those without a history of seafood allergy developed at least 1 positive reaction in the SPT. Prawn, shrimp, and crab were the 3 most frequently sensitized allergens. Nearly all patients (98.3%) who were sensitized to crustaceans were also sensitized to HDMs and/or cockroach. There was no significant correlation between a positive SPT to seafood with age, age of onset of AD, duration, and severity of AD, and the presence of other atopic diatheses.

CONCLUSION: The relevant sensitization rate of local seafood among adults with AD was 45.1%.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.