Most food allergies are caused by the proteins in the food. Milk and soy are the first food allergies to appear in infants because infant formula is made from cow's milk and soy. If your child is allergic to milk or soy, your pediatrician may recommend testing your infant for other common food allergens, such as wheat, eggs, fish and tree nuts. A milk and soy protein allergy will cause similar symptoms to develop after consuming milk or soy products. If you suspect that your infant has a food allergy, call your pediatrician for a clinical diagnosis.
Milk, Soy and Protein Allergies
Milk, soy and protein allergies are all caused by the same reaction of the immune system. The Baby Center website states that when your infant ingests milk, soy or another allergy food, the baby's immune system doesn't recognize the proteins as safe. The baby's body creates a defense system to fight off the proteins. Immunoglobulin E, or IgE antibodies, are created with histamine to ward off the allergen. These chemicals cause inflammation and irritation in the body that leads to common food allergy symptoms.
Common Symptoms
Symptoms of all food allergies in children are similar. DrGreene.com states that common symptoms from a food protein allergy will affect the infant's respiratory system, digestive system and skin. The infant will become fussy because of abdominal pain and cramping. Diarrhea, vomiting and nausea are all common symptoms of a food allergy in infants. Nasal congestion, shortness of breath and wheezing may occur shortly after consuming the food. The infant's skin may become inflamed, itchy and develop hives or eczema.
Complications
Kids Health states that mil, soy and all food protein allergies increase your infant's risk of developing a severe allergic reaction, anaphylaxis. During anaphylactic shock your infant may turn blue, not be able to breathe, may become unconscious, cry excessively and develop facial swelling. Anaphylaxis is a life-threatening condition that will require emergency medical attention. Your pediatrician may prescribe an epinephrine pen if she suspects that your baby has a severe allergy.
Consideration
Food allergies in infants are commonly confused with food intolerances. Food allergies are a reaction of the immune system, while food intolerance is the inability of the digestive system to create sufficient amounts of the needed enzymes to break down the sugars and proteins found in certain foods.
