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Food allergy symptoms

Let’s talk food allergy

Food allergy syptoms – Adverse food reactions

The most common symptoms are dermatological or gastrointestinal (or a combination of both). The dermatological signs are varied, and are often indistinguishable from those associated with atopic dermatitis. When pruritus is not responsive to corticosteroids, a food allergy should be considered. However, if pruritus responds to corticosteroids, that does mean that no food allergy is present.

Generalised or localised non-seasonal pruritus (of the face, ears, paws, armpits, inguinal and perineal regions) is the most frequently described symptom. The patient experiences severe itching, resulting in excessive and unnatural scratching, biting and licking.

It is also possible for the effects of a food allergy to be below the “itch threshold”, with only flare-ups of pruritus occurring when there are increased levels of environmental allergens during the high-pollen season. Otitis externa and recurrent pyoderma, with or without pruritus, has also been associated with food allergies.

Gastrointestinal symptoms may include vomiting, diarrhoea, weight loss, abdominal discomfort, flatulence and frequent defecation (more than three times a day).


The most common food allergens that affect dogs seem to be beef, chicken, egg, milk, wheat, soy and corn, which are also common ingredients in many commercial foods.

In order to diagnose food allergy, a food elimination trial should be performed.

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Next+ Food Reactivity Test can give guidance

Next+ Food Reactivity Test

Next+ Food Reactivity Test can give guidance for choosing suitable ingredients for an elimination diet.

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