Neonatal Food Protein Induced Enterocolitis Syndrome to Cow's Milk with Delayed Diagnosis in Two Pediatric Patients

We present a case of 3-year-old pediatric Lebanese patient who initially presented to the clinic because of severe and persistent cow's milk allergy since age of 3 days, and a 6-month-old Belgian pediatric patient with the same symptoms since the age of 3 months. Symptoms were consistent of only gastro-intestinal manifestations in the Lebanese patient, but the symptoms were more severe in the Belgian patient with hypoglycemia, eczema, and failure to thrive. Investigations showed IgE sensitization for milk and egg in the Belgian child and only to milk in the Lebanese child and both patients were diagnosed initially with Cow's milk protein allergy until the diagnosis of food protein induced enterocolitis syndrome was made.