Egg allergy

Overview

Egg allergy is when your body's immune system reacts to the proteins in eggs. It can cause symptoms from mild to severe. It is most common in children but can affect people of any age.

Yes, egg allergy is fairly common, especially in young children. It affects about 1–2% of children worldwide.

It mainly affects infants and young children, but can also occur in older children and adults. People with other allergies, eczema, or a family history of allergies are more likely to have it.

Symptoms

Common symptoms

• Hives or red, itchy skin
• Swelling of the lips, face, or tongue
• Stomach pain, nausea, or vomiting
• Diarrhea
• Runny or stuffy nose
• Sneezing or watery eyes

Symptoms in children

• Skin rashes like eczema or hives
• Tummy aches and vomiting
• Coughing or wheezing
• Irritability and crying
• In severe cases, trouble breathing or fainting

Symptoms in older adults

• More severe reactions can happen, including anaphylaxis (a serious allergic reaction)
• Itchy mouth or throat
• Swelling of the throat or tongue
• Drop in blood pressure causing dizziness or fainting

Causes

Main causes

• Egg allergy is caused by the immune system reacting to proteins in egg whites (and sometimes yolks).
• Both chicken and other bird eggs can trigger the allergy.
• Reactions can happen from eating eggs or from contact with eggs on skin or in foods.

Risk factors

• Family history of allergies (like hay fever, asthma, or eczema)
• Having eczema as a baby or young child
• Other food allergies (like milk or peanut allergy)
• Age – most common in infants and young children

When to see a doctor

See a doctor urgently if:

• If you or your child has any symptoms of a severe allergic reaction (anaphylaxis), call emergency services right away.
• If you have used an epinephrine auto-injector, you still need to go to the emergency room for monitoring.

Book a routine appointment if:

• If you suspect an egg allergy, talk to your doctor for a proper diagnosis.
• If your child has eczema that is not improving with usual care.
• If you have had a mild reaction to eggs and want to know if you need to avoid them completely.

Diagnosis

Your doctor will ask about your symptoms and when they happen. They may refer you to an allergy specialist for tests.

Tests that may be done

• Skin prick test – a small drop of egg protein is placed on your skin and the doctor gently pricks it. If a red bump appears, you may be allergic.
• Blood test – checks for certain antibodies (IgE) that show if your body is reacting to egg proteins.
• Food challenge – under medical supervision, you eat a small amount of egg to see if a reaction happens. This is done in a clinic or hospital with emergency equipment ready.

What to expect at your appointment

The doctor will explain the test results and help you understand what foods to avoid. They may also give you a plan for what to do if you accidentally eat eggs. For many, the diagnosis brings clarity and a clear way forward.

Treatment

There is no cure for egg allergy, but you can manage it by avoiding eggs and treating reactions if they happen. Most children outgrow it over time.

Self-care at home

• Read food labels carefully to avoid eggs and egg products.
• Tell family, friends, and school staff about the allergy.
• Wear a medical alert bracelet or carry an allergy card if needed.
• Learn how to use an epinephrine auto-injector if prescribed.

Medical treatments

For mild reactions, antihistamines (like cetirizine or loratadine) can help with itching or hives – your pharmacist or doctor can advise. For severe reactions, a shot of epinephrine is needed right away. Some doctors may recommend an allergy action plan or, in some cases, an oral immunotherapy program under strict medical supervision to help build tolerance.

When is surgery considered?

This is not relevant for egg allergy.

Living with this condition

Living with egg allergy means being careful about what you eat and what touches your skin. Most people get used to checking labels and asking about ingredients when eating out.

Lifestyle tips

• Always carry your emergency medication (like an epinephrine auto-injector) if prescribed.
• Teach your child to say ‘no thank you’ to food offered by others.
• Cook meals at home where you can control the ingredients.
• Talk to restaurants about your allergy before ordering.

Diet and exercise

You can eat a healthy, balanced diet without eggs. Many foods like meat, fish, vegetables, fruits, grains, and dairy are egg-free. There are also egg replacers for baking. Just be sure to check labels on processed foods like mayonnaise, pasta, and baked goods. Exercise is fine – just keep your medication with you if you are at risk of serious reactions.

Mental health and emotional wellbeing

Having a food allergy can feel stressful, especially in social situations or at school. You might feel anxious about eating out or accidentally eating eggs. It is normal to feel this way. Talking to a counsellor or joining a support group can help.

Prevention

Egg allergy cannot always be prevented. However, early introduction of cooked egg (like in cake or biscuit) as part of weaning (after 6 months of age, not before) may help reduce the risk in some children – talk to your doctor or health visitor first.

Vaccines

Most vaccines, including the MMR (measles, mumps, rubella) and flu vaccines, are safe for people with egg allergy. In some countries, the flu vaccine may contain a small amount of egg protein, but it is still considered safe for most. Your doctor can advise on which vaccines are fine for you or your child.

Screening programmes

There is no routine screening for egg allergy. It is diagnosed based on symptoms and tests if needed.

Complications

If left untreated

• Repeated allergic reactions that can range from uncomfortable to life-threatening.
• Anaphylaxis – a severe, whole-body allergic reaction that needs immediate emergency treatment.
• Poor growth or malnutrition if a very restricted diet is not well planned.
• Anxiety or fear around eating, especially in children.

Long-term outlook

Most children outgrow egg allergy, often by the teenage years. For those who do not, with careful management you can live a full, active life. The risk of a severe reaction is low if you avoid eggs and have an emergency plan in place. Research continues, and new treatments like oral immunotherapy are helping some people build tolerance.

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