FPIES is a type of food allergy that usually starts in infancy, but can last for several years. Symptoms show up roughly two hours after the food is consumed and mostly affect the digestive system. They can include severe vomiting, diarrhea, lethargy, dehydration, low blood pressure, and low body temperature. Milk, soy, rice and oats are some of the more common FPIES allergens.
FPIES affects both boys and girls, typically when they are infants and young children, starting within the first year of life. While it usually affects young children, it’s thought that FPIES can affect anyone at any age, although reports of FPIES in adults have been rare and not well studied.
At this time, we don’t really know how many infants and children have FPIES. Hopefully, we’ll have better data in the coming years, as more is being learned about this condition every day!