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Food introduction, Diagnostics and Oral Immunotherapy

Food allergy is our passion. Halton pediatric allergy strives towards assisting with early introductions, accurate diagnostics and is among the first Canadian pediatric allergy clinics to offer private practice oral immunotherapy for foods.


Children with food allergies have an allergic reaction when they consume certain foods. This happens because their immune system overreacts to the proteins in that food. Eight kinds of food cause most food allergies these include: Cow’s milk, Eggs, Peanuts, Tree nuts, Wheat, Soy, Fish and Shellfish.

Signs of a food allergy include:
• A rash, or red, itchy skin
• Stuffy or itchy nose, sneezing, or itchy and teary eyes
• Vomiting, stomach cramps or diarrhea
• Angioedema or swelling
• Hoarseness, throat tightness or a lump in the throat
• Wheezing, chest tightness or trouble breathing


It is common for people and even some healthcare providers to misdiagnose the difference between food allergy and food intolerance. Food allergy can result in a life-threatening allergic reaction. On the other hand, a misdiagnosis could mean that you are unnecessarily limiting what you eat.

Toddler eating

The gold standard in the diagnosis of food allergies is the oral food challenge. We are pleased to offer this procedure in our office for assessment of food allergies and to allow for early introductions of allergenic foods.

Over the past few decades, the incidence of allergic disease has increased with rates of food allergy growing by two – three fold.

Oral immunotherapy (OIT) for food is a process in which a food allergic patient is given very small amounts of the food that they are allergic to, such as peanut or milk. Gradually over a period of 6 – 8 months, the amount of food ingested by the patient is increased until they are able to eat a typical serving of that food. 

This is an uninsured service and is not covered through OHIP.

Nurse Checking Girl
Food Allergy: Services
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