[Food allergy in childhood]

Area of Science:

• Pediatric Allergy and Immunology
• Clinical Nutrition
• Immunology

Background:

• IgE-mediated immediate hypersensitivity reactions are the most frequent food allergies in children.
• Hen's egg, cow's milk, and peanut are primary triggers, with peanut allergy often persisting lifelong.
• Diagnosis involves patient history, sensitization tests, and oral food challenges, with component-resolved diagnostics aiding peanut and hazelnut allergies.

Purpose of the Study:

• To review current understanding and management of childhood food allergies.
• To discuss diagnostic approaches, therapeutic strategies, and prevention methods.
• To highlight emerging treatments and the role of early allergen introduction.

Main Methods:

• Literature review of IgE-mediated food allergies in childhood.
• Analysis of diagnostic tools, including component-resolved diagnostics.
• Examination of therapeutic options: elimination diets, emergency preparedness, and novel immunotherapies.
• Review of current prevention guidelines and intervention studies on early food introduction.

Main Results:

• Tolerance develops frequently for hen's egg and cow's milk allergies, unlike peanut allergy.
• Component-resolved diagnostics are valuable for specific allergies like peanut and hazelnut.
• Elimination diets and patient education are current therapeutic mainstays; emergency medication and training are crucial for anaphylaxis risk.
• Early peanut introduction (4-11 months) in high-risk infants demonstrated efficacy in preventing peanut allergy.

Conclusions:

• Current guidelines recommend against avoiding allergenic foods for prevention.
• Early introduction of allergenic foods is a promising strategy for preventing food allergies.
• Ongoing research focuses on immunotherapy and optimizing early introduction protocols for food allergy prevention and management.