Israeli Study Finds Allergic Food Contact with Skin Poses Minimal Risk to Children

A new Israeli multicenter study involving 192 children with confirmed food allergies has found that incidental contact of allergenic foods with intact skin does not trigger severe allergic reactions such as anaphylaxis. Conducted at Meir Medical Center and Schneider Children's Medical Center and published in Acta Paediatrica, the research was led by Dr. Idit Lachover-Rot, head of the Allergy and Clinical Immunology Unit at Rambam Health Care Campus.

In the study, children's arm skin was exposed for 15 minutes under medical supervision to common allergens including cow's milk, eggs, peanuts, sesame, nuts, and almonds. Results showed that 84% of exposures caused no reaction, 15% had mild localized redness or swelling, and only three children developed more extensive skin reactions that resolved with antihistamine treatment. Crucially, no cases of anaphylaxis or systemic allergic responses were observed.

Dr. Lachover-Rot emphasized that the risk from skin contact with allergenic foods is "very low to negligible," offering reassurance to families often anxious about accidental exposure. However, the researchers stressed that current medical guidelines remain unchanged, including avoidance of allergenic food ingestion, carrying epinephrine injectors, and preventing oral exposure. The study did not assess risks from contact with broken skin or mucous membranes, where reactions might differ.

The Israeli Association of Allergy and Clinical Immunology welcomed the findings, highlighting that inhalation or skin contact with allergens does not cause anaphylaxis and that ingestion remains the primary risk route. They noted this evidence supports safer, evidence-based allergy management policies in public spaces and schools, balancing safety for allergic individuals with reasonable accommodations for the general public, aligning with international standards.

Summary: An Israeli study of 192 allergic children shows that incidental contact of allergenic foods with intact skin rarely causes reactions and never triggers anaphylaxis, providing reassurance to parents while maintaining current allergy management guidelines.