Explanation of the Figure
Begin by eliminating the most commonly known food allergens – soy, eggs, dairy products, and gluten products (all of them). Observe the child. If symptoms appear, the child could be allergic to other food items or additives. If no symptoms appear during this phase, introduce the items one by one and check for symptoms. If a particular item produces a symptom, then eliminate it from the diet of the child.
After checking all the major allergens/intolerance factors, move to lesser known allergens/intolerance factors such as nuts, pineapples, and peanuts. Eliminate them all for a few days and then reintroduce them, and check for symptoms.
It’s important that the major classes of food additives are also checked one by one. These include food colours, artificial sweeteners, and preservatives. Carefully select the packet food items that have one or all of them, and check them the same way the allergens/intolerance factors were tested.