Food allergy is the most common cause of anaphylactic shock in children, affecting 8% of the pediatric population. Statistics show that nearly half of these children experience severe, life-threatening reactions. In 2015, the LEAP studyconfirmed that early introduction of peanuts into the diet significantly reduces the risk of developing allergies in high-risk groups. Later, EAT studies demonstrated similar efficacy for eggs. Based on this robust scientific evidence, international allergy organizations developed new guidelines advising parents to introduce allergens into an infant’s diet between 4 and 6 months of age.
Despite these preventive goals, the new approach has created unforeseen difficulties. According to a research team at UCLA, emergency department visits for acute food allergic reactions in infants have increased. An analysis of 11-year statistics shows that this sharp jump is directly linked to the new early feeding guidelines.
It appears that in some highly sensitive children, the acute reaction to allergens results in immediate hospitalization. This trend presents a new challenge for pediatricians: more accurate screening of high-risk groups and proper preparation of parents are essential to ensure the benefits of prevention do not result in overcrowding of ER departments.
Study Details:
The study evaluated 67,059 visits of children aged 0 to 5 years. It revealed that 330 children (350 total cases) experienced an acute allergic reaction to food, with nearly half (46%) being infants. In 50% of cases, full anaphylaxis developed, requiring the use of epinephrine (adrenaline).
Severity Comparison: Reactions in older children (ages 2 to 5) tended to be more severe—63% of cases were classified as severe, compared to 40% in infants.
Epinephrine Use: The overall rate of epinephrine administration was 24%.
Hospitalization Dynamics: Although the share of severe reactions is lower in infants, this age group shows the most significant upward trend in hospitalizations.
Eczema: A Major Red Flag
The study found that eczema triples the risk of developing an allergic reaction in infants. This skin condition serves as a “red flag” for pediatricians, as a damaged skin barrier often facilitates early sensitization.
In older children (ages 2–5), the primary risk factors were identified as male sex, pre-existing allergies in the medical history, and past use of epinephrine. Interestingly, the risk appeared relatively lower among certain ethnic minorities in this specific cohort.
A similar trend was observed in Australia after 2016 following the implementation of similar guidelines. The positive news, however, is that despite the increase in ER visits, the number of fatal or extremely severe cases remains consistently low. The rise in visits is often exacerbated by natural parental fear and a deficit of information during the first contact with a potential allergen.
Priority Recommendations for Pediatric Practice
Targeted Monitoring of High-Risk Groups: Special attention must be paid to infants with atopic dermatitis (eczema). For this group, consultation with an allergist or skin/blood testing is recommended before introducing allergens to minimize the risk of an acute reaction during the first taste.
Parental Education: Parents must be trained to recognize early symptoms. They need to know how to distinguish a mild rash from anaphylaxis, how to use an epinephrine auto-injector, and what specific steps to take while waiting for emergency services.
Refining Systemic Approaches: Future research should focus not only on prevention but on creating guidelines that help primary care providers safely manage high-risk children. This will reduce the burden on ER departments and increase public trust in nutritional recommendations.
Source: JACI
