[RAST positivity for food in atopic dermatitis]

Area of Science:

• Pediatric Allergy and Immunology
• Clinical Immunology
• Dermatology

Context:

• Atopic dermatitis (AD) is a common chronic inflammatory skin condition in children.
• Identifying specific food allergens is crucial for managing AD.
• Radioallergosorbent testing (RAST) is a common method for detecting specific IgE antibodies.

Purpose:

• To analyze the results of RAST for 9 food mixtures in 113 children with atopic dermatitis.
• To determine the prevalence of specific IgE sensitization to various food allergens.
• To investigate the correlation between early feeding practices and allergic sensitization.

Summary:

• 60% of children with AD were RAST positive for at least one food mixture.
• Egg, cereals, and legumes were the most common allergens identified.
• Sensitization to egg, cow milk, and meat was more prevalent in younger children.
• RAST results for cereal mixtures showed good agreement, particularly for positive results.
• Early life feeding (breast milk vs. cow milk) did not influence AD severity or RAST positivity.

Impact:

• Highlights the high prevalence of food sensitization in pediatric atopic dermatitis.
• Provides insights into common allergen profiles and age-related sensitization patterns.
• Suggests that early feeding choices may not be a primary determinant of food allergy development in AD.
• Informs clinical practice regarding allergen testing and management strategies for children with AD.