New Study Unveils Startling Allergic March in Children: Eczema, Asthma, and Hay Fever Progression

new study allergic march eczema food allergies allergic rhinitis Hay Fever esophagitis

By E.Baloyo , Parent Herald Jul 26, 07:51 am

Photo: (Photo : John Moore / Getty Images)

A new study published in the journal Pediatrics has shed light on the alarming progression of allergy-related diseases in children, a phenomenon known as the "allergic march."

The research, based on the electronic medical records of nearly 220,000 children in the US from 1999 to 2020, provides crucial evidence of how allergies develop and evolve in the early stages of life.

The study's findings not only emphasize the significance of early diagnosis and intervention but also reveal disparities in allergy prevalence among different racial groups.

Understanding these patterns could pave the way for more effective allergy management and improved quality of life for affected children.

The Journey of Allergy-Related Diseases

The study's analysis of electronic medical records revealed a pattern of progression in allergy-related diseases, commonly referred to as the "allergic march."

According to NBC News, the journey commences with atopic dermatitis, better known as eczema, which emerged as the first manifestation in over 10% of children studied.

Recently published in the journal Pediatrics, a fresh study validates the concept of the "allergic march," representing the typical pattern of allergy development and advancement in children from infancy up to the age of 3.

Examining the medical records of over 200,000 children between 1999 and 2020, the research reveals that children were commonly identified with eczema, or atopic dermatitis, at an average age of 4 months.

Typically, eczema appears around the age of four months, causing telltale rashes and dry patches on the skin.

Around 13 months old, the study observed the peak onset of anaphylactic food allergies and asthma in young children, with asthma affecting more than one in five children.

By the time these kids reached a little over two years old (26 months), the prevalence of allergic rhinitis, or hay fever, surged significantly, affecting 19.7% of the study participants.

At 35 months, a few children progressed to develop eosinophilic esophagitis, a rare allergic condition characterized by inflammation in the esophagus, completing the sequence of the allergic march.

Racial Disparities and Allergy Prevalence

According to PRNewswire, beyond the discovery of the allergic march, the study also highlighted noteworthy disparities in allergy prevalence among different racial groups.

Contrary to previous beliefs, the research found that eosinophilic esophagitis (EoE), previously thought to primarily affect White male children, impacted a significant portion of children from diverse racial backgrounds.

Surprisingly, 40% of children diagnosed with EoE were not White. On the other hand, the study revealed that a higher proportion of children with eczema and asthma were Black.

This aligns with previous research by the US Centers for Disease Control and Prevention, which also indicated that Black children were more likely to have eczema and food allergies compared to children from other racial groups.

Interestingly, Hispanic children demonstrated consistently lower rates of food allergies.

Implications for Early Intervention and Healthcare

The study's findings underscore the importance of early intervention in managing and potentially preventing allergic conditions.

According to CNN, Dr. David Hill, a pediatric allergy expert at the University of Pennsylvania and one of the study's authors, says the need for accurate diagnoses and early treatment is especially important for conditions like eczema that disrupt the skin's protective barrier.

Proper management during the early stages of allergy-related diseases could potentially curb the progression of the allergic chain.

Furthermore, the study's revelation of discrepancies in allergy prevalence between health care provider records and survey-based studies emphasizes the significance of using reliable data sources for research.

By tapping into electronic medical records, researchers were able to correct previous misconceptions, such as the reported frequency of food allergies in children, which turned out to be half of what was previously reported.