Infants with FPIES to solid food proteins--chicken, rice and oats

Area of Science:

• Pediatric Allergy and Immunology
• Gastroenterology
• Clinical Medicine

Background:

• Food Protein Induced Enterocolitis Syndrome (FPIES) is a rare, non-immunoglobulin E (IgE)-mediated gastrointestinal food hypersensitivity.
• It primarily affects infants and young children, presenting with distinct gastrointestinal symptoms following ingestion of specific food proteins.

Observation:

• Two pediatric cases of FPIES are presented, highlighting the characteristic delayed onset of severe vomiting.
• Symptoms typically manifest 1.5 to 3 hours after consuming the causative food.
• Associated clinical manifestations included diarrhea, hypovolemic shock, and metabolic acidosis.

Findings:

• FPIES is characterized by a delayed, non-IgE immune response to food antigens.
• The hallmark symptom is profuse, repetitive vomiting, differentiating it from IgE-mediated allergies.
• Diagnostic confirmation relies on clinical history and response to food elimination.

Implications:

• Accurate diagnosis and prompt identification of trigger foods are crucial for effective management.
• Strict avoidance of the offending food is the cornerstone of FPIES treatment and prevention.
• Understanding FPIES pathophysiology aids in developing targeted therapeutic strategies and improving patient outcomes.