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Table 1 Symptoms and laboratory values of chronic and acute FPIES

From: FPIES in exclusively breastfed infants: two case reports and review of the literature

Chronic FPIES Acute FPIES
Recurrent vomiting Unstoppable vomiting (1 to 3 h after meal)
Chronic diarrhea Diarrhea (with/without blood) 4–6 h after meal
Dehydration Lethargy (hypotension, hypothermia)
Abdominal distension Pallor
Weight loss, poor growth Abdominal distension
Laboratory values
Anemia Neutrophilia
Hypoalbuminemia Thrombocytosis
Neutrophilia/eosinophilia Metabolic acidosis
Metabolic acidosis Methemoglobinemia
Methemoglobinemia Stool leukocytes and eosinophils
Reducing substances in stools Blood in stools
  Reducing substances in stools