Food Allergy Mimicking Pylorus Hypertrophy

Food allergy (FA) is a disease with increasing prevalence and a wide spectrum of clinical manifestations. These include the eosinophilic disorders, which can involve any segment of the gastrointestinal tract (GIT), including the stomach. In this context, three patients with a confirmed diagnosis of food allergy, who were initially diagnosed with pyloric hypertrophy, are presented. All cases showed an adequate response to nutritional management. It is essential to consider food allergy, such as eosinophilic gastroenteritis, as part of the differential diagnosis of gastric outlet obstruction in those patients who present vomiting secondary to pyloric hypertrophy.