Regional differences in diagnosis and management of cow's milk allergy.

Background: Various guidelines for the diagnosis and management of cow's milk allergy (CMA) have been published.

Purpose: This study aimed to compare voting outcomes of experts from Mexico, the Middle East, and the European Society of Pediatric Gastroenterology Hepatology and Nutrition (ESPGHAN) on statements regarding CMA.

Methods: The 3 expert groups voted on the same 10 statements. Each participant voted anonymously using a score of 0-9 (≥6 meant agreement; <5 reflected disagreement). If <75% of the participants agreed with the statement, it was rejected. None of the groups was aware of the voting outcomes of another group.

Results: There was broad consensus amongst the 3 groups. Agreement was reached that infant colic as a single manifestation is not suggestive of CMA. All groups confirmed that an extensively hydrolysed formula is the preferred elimination diet in mild/moderate CMA cases; however, hydrolysed rice formula is an alternative. Amino acid-based formulas should be reserved for infants with severe symptoms. The discrepancy in voting outcomes regarding soy formulas highlights the differences in opinions. Two of 13 ESPGHAN experts (15%), 1 of 14 Middle East experts (7%), and 6 of 26 Mexican experts (23%) disagreed with the statement that soy formula should not be the first choice for the diagnostic elimination diet but can be considered in some cases for economic, cultural, and palatability reasons. All of the ESPGHAN and Mexican experts agreed that there was no added value of probiotics, prebiotics, or synbiotics to the efficacy of elimination diets on CMA, whereas 3 of 14 Middle East experts (21%) determined that there was sufficient evidence.

Conclusion: Although all statements were accepted by the 3 groups, there were relevant differences illustrating variations according to geography, culture, cost, and formula availability. These findings emphasize the need for region-specific guidelines.