Common signs

What parents may notice

  • Hives or itching after food
  • Lip, face or eye swelling
  • Vomiting soon after eating
  • Cough, wheeze or throat symptoms
  • Dizziness or collapse
  • Reproducible reaction to one food
  • Eczema associated with certain foods in selected cases
Possible reasons

What can cause it?

Common trigger foods include milk, egg, peanut, tree nuts, wheat, soy, fish and shellfish, although any food can cause a reaction. Sensitisation on a test without symptoms does not always equal clinical allergy.

When to book

When should your child be assessed?

  • A reaction has occurred after food
  • The trigger is uncertain
  • Several foods have been removed
  • The child needs a school action plan
  • The family needs guidance on reintroduction or food challenge
Urgent warning signs

When to seek immediate care

  • Breathing difficulty or throat tightness
  • Tongue or rapidly increasing facial swelling
  • Collapse or severe weakness
  • Hives with vomiting, wheeze or breathing symptoms
  • Use prescribed adrenaline and seek emergency care for suspected anaphylaxis
At the specialist visit

How the concern may be evaluated

  • Detailed reaction timing and amount
  • Targeted skin or blood testing when useful
  • Nutrition and growth review
  • Supervised oral food challenge selectively
  • Written avoidance and emergency plan
Prepare

What to do before the visit

  • Bring food labels and a reaction timeline
  • Photograph rashes when safe
  • List removed foods and substitutes
  • Bring previous allergy tests and emergency medicines
Questions parents ask

The real questions, answered.

Not what we wish you'd ask. What you're actually thinking when you find this page.

Book a consultation
Is food allergy the same as intolerance?

No. Allergy involves the immune system and can cause rapid serious reactions, while intolerance usually causes digestive symptoms.

Should broad food panels be used?

Testing should be targeted to the reaction history because broad panels can produce misleading positives.

Can children outgrow food allergy?

Some allergies are often outgrown, while others are more likely to persist. Follow-up testing and supervised challenge guide decisions.

What is an oral food challenge?

It is a medically supervised process of giving measured amounts of food to determine whether allergy remains.

Should siblings avoid the same food?

Not unless they have their own reaction or medical advice. Unnecessary restriction can affect nutrition.

Persistent symptoms deserve a clear next step.

Speak with Paediatric Allergy or contact our team to organise the right starting point.