Is Egg Intolerance the Same as Egg Allergy? Your Ultimate Dietary Guide!

Medically reviewed by Mary Ahern MS, RDN, RYT February 20, 2025| Written by Zenda Nel

Is Egg Intolerance the Same as Egg Allergy? Your Ultimate Dietary Guide!

It is common to confuse egg intolerance with egg allergy. There may be an overlap in symptoms, but the two conditions are not the same. An egg allergy is an immune response to the protein in eggs. Egg allergies are not limited to chicken eggs – people can be allergic to other poultry eggs as well, such as duck, pheasant, or turkey.  

With an egg allergy, the immune system overreacts to the various proteins in eggs by producing antibodies or Immunoglobulin E (IgE). It is these antibodies that result in allergic reaction. 

In contrast, an egg intolerance is merely an insensitivity to eggs. If you have an egg intolerance you may feel a bit off after eating them, but you won't have a severe allergic reaction.

Food intolerance, in general, is common. Inindustrialized countries, more people suffer from food intolerances than food allergies.

How Do I Know If I'm Intolerant to Eggs or Allergic? 

An egg intolerance reaction is a digestive issue for not being able to digest eggs properly. This inability can haveseveral causes, such as a lack of the enzymes necessary to digest the food, sensitivity to food additives, or a sensitivity to naturally occurring chemicals in foods. 

Individuals who are intolerant to eggs can often tolerate a small amount of it without experiencing any adverse effects, but this amount may differ from person to person. Being a digestive issue, common symptoms of egg intolerance are gut-related such as abdominal pain or bloating, cramps, diarrhea, nausea, or vomiting.

It is easier to realize that you have an egg allergy as you will have an immediate reaction after eating eggs. Even a small amount will be intolerable. 

Symptoms of allergic reactions to eggs most often appear on the skin in the form of a rash, itchiness, hives, itchiness, and swelling of the skin.Symptoms may also include:

  • Stomach-ache
  • Diarrhea
  • Coughing
  • Nausea or vomiting
  • Tingling or swelling of your lips, tongue, or throat.

Some people experience severe allergic reactions includinganaphylaxis - which can be fatal and require immediate medical attention. Other severe symptoms include:

  • Confusion
  • Difficulty breathing
  • Tightness in the chest or throat.
  • Difficulty swallowing
  • Dizziness
  • Sudden drop in blood pressure
  • Loss of consciousness

What Causes Egg Intolerance?

Like other food intolerances,enzyme deficiency is a major cause of egg intolerance. Enzymes are proteins that help with digestion, breaking foods down into fats, proteins, and carbohydrates. An individual with an egg intolerance can't digest certain proteins found in egg whites or yolks. 

An intolerance to eggs can bedue to genetic factors, environmental influences, and immune responses.

How to Confirm Egg Allergy in a Baby?

Egg allergy isthe second most common food allergy in infants and young children after cow's milk. Most children will outgrow an egg allergy by the time they reach age 5. Until then, severe allergic reactions remain possible, so parents must ensure an allergic child doesn't eat anything with eggs.

Eggs have five different proteins, three in the egg whites and two in the yolks. Doctors use blood tests to establish which protein is causing the problem. Depending on the outcome, a child may be able to eat baked or boiled eggs.

While an oral food challenge can confirm allergy, it is challenging to perform with a baby or very young child. Therefore, a skin test is a good alternative. This test involves a very small amount of egg on the skin of the forearm and then making a tiny prick on the skin in that spot. If a small bump appears on the skin, it might indicate an egg intolerance.

Signs That Your Young Child May Be Allergic To Eggs

You can suspect that your child is allergic to eggs if the child shows any of these symptoms after eating eggs:

  • Swelling of the face, lips, or eyes 
  • Hives 
  • Stomach pain
  • Vomiting 

Signs of a severe food allergy (anaphylaxis) include:

  • Difficulty breathing or wheezing
  • Coughing
  • Swollen tongue
  • Apparent swelling or tightness in the throat
  • Difficulty talking or hoarse voice
  • Appears dazed 
  • Fainting 
  • Becoming pale and floppy

Signs That a Baby is Experiencing An Egg Allergy:

Since a baby or very young child can't express how it feels, it's difficult to know if it is having an allergic reaction. But the following symptoms may serve as clues to alert you: 

  • Eczema 
  • Chronic diarrhea
  • Reflux (spitting up)
  • Failure to thrive (slow weight gain)

If you suspect your child may have an egg allergy, don't take matters into your own hands by removing eggs from the child's diet. The child's reactions might be to something else. Take your child to the doctor to find out exactly what the problem is. It's not advisable to remove nutritious food items from a child's diet without medical consultation.

Can An Egg Allergy Kill Somebody?

Yes, a severe allergy can lead to anaphylaxis, which is a severe allergic reaction. Symptoms may include difficulty breathing, swelling, confusion, a drop in blood pressure, and, in severe cases, loss of consciousness. An immediate epinephrine injection is critical to prevent complications or death.

How Can I Get Rid Of My Egg Allergy?

Currently, there is no cure or medicine for an egg allergy. Your best option is to eliminate eggs from your diet. This includes avoiding foods or dishes made with eggs, including packaged goods. Read the labels of packaged foods; by law, manufacturers must list all common food allergens, including eggs.

Keep in mind that a food product may not have eggs as an ingredient but might be contaminated with egg residues due to being processed in a facility where eggs are processed. The safest products are those stating something like this on their labels: "Made in a facility that doesn’t process eggs". Egg is a major allergen that must be listed in plain language on packaged foods, according to Federal law.

Like cow’s milk allergy, almost 80% of children seem to outgrow an egg allergy.

What Foods to Eat for Egg Allergy?

Eggs are very nutritious and a good source of protein. If you can't have eggs because of an egg allergy, it's important to ensure you don't miss out on the essential nutrients that eggs provide. 

Taking a protein supplement not derived from eggs is one way to ensure you get enough protein on an egg-free diet. Choose avegan product made with plant-based protein and not eggs.

If you have an egg allergy, you can easily follow a balanced and tasty diet. You can include the following foods in an egg-free diet:

  • Whole grains (provided they are used on their own and not with eggs)
  • Meat, poultry, and fish (not processed)
  • Legumes 
  • Fruits
  • Vegetables
  • Nuts and seeds
  • Milk and milk-derived products

1. Egg Substitutes

Many recipes call for eggs, such as those for pancakes, muffins, cakes, pastries, meatballs, and fishcakes. Don't despair, you don't have to miss out. There are many ways to skin a cat.

Tofu is a popular substitute for eggs. You can mix it with turmeric and make faux scrambled eggs. Or you can cook it with onions and tomatoes for a different kind of breakfast dish. 

Try these substitutes for eggs. They usually work well if the recipe calls for a few eggs (three or less). 

  • Mix one tablespoon of water, one tablespoon of oil and one teaspoon of baking powder. 
  • One packet of unflavored gelatin dissolved in two tablespoons of warm water.
  • Applesauce or mashed bananas, can be a replacement for eggs in baking.
  • Flaxseed or chia seeds, ground and mixed with water — one tablespoon of ground seeds mixed with 2 ½ tablespoons of water is equal to one egg. 
  • One teaspoon of yeast dissolved in a cup of warm water.
  • Vegan eggs made from various plant-based ingredients, such asalgal flour made from algae.

2. Discover Aquafaba

Aquafaba is the water that chickpeas have been cooked in. This liquid can be whipped up and used in the place of egg whites. It is easier to whip the liquid left from canned chickpeas because the liquid is thicker. So use that rather than the liquid from beans you cooked yourself.

Aquafaba allows you to make all your favorites, including: 

  • Macaroons
  • Meringue 
  • Marshmallows 
  • Mayo 
  • Mousse 
  • Marzipan 
  • Ice cream
  • Baked goods like muffins, cakes, and brownies

What Foods to Avoid in Egg Allergy?

Simply not eating eggs is not enough to avoid an egg allergy reaction. Many foods are prepared with eggs. In fact, eggs are also in some medicines and supplements. The labels may not plainly state that the product ingredients include eggs. 

Many otherterms may indicate the presence of eggs in the product, such as:

  • Albumin
  • Apovitelin
  • Avidin
  • Globulin
  • Lecithin
  • Livetin
  • Lysozyme
  • Ovalbumin
  • Ovomucoid
  • Ovomucin
  • Ovoglobulin 
  • Ovovitellin
  • Vitelin
  • Surimi

1) Foods that May Contain Eggs

  • Baked goods such as some breads, cakes, pastries, cookies, tortillas, and crackers
  • Puddings, pancakes, waffles
  • Cake fillings and frostings
  • Candies, energy bars, chocolate
  • Ice cream, custard
  • Hollandaise sauce
  • Marshmallows
  • Marzipan
  • Mayonnaise
  • Meringue
  • Pasta
  • Pretzels
  • Condiments
  • Salad dressing
  • Soufflé
  • Processed meat, meatloaf, and meatballs
  • Puddings and custards
  • Many kinds of pastas
  • Foam on alcoholic drinks
  • specialty coffees

In addition to avoiding food containing eggs, be aware of cross-contamination risks when you have a meal in someone else's home. Also, be extra careful when dining out.

2) Non-Food Items to Avoid If You Have an Egg Allergy 

Certainvaccines can contain egg protein. Vaccines that people with allergies should beware of are the vaccines for yellow fever and for measles-mumps-rubella (MMR). Although flu vaccines may contain some egg protein they are generally considered safe for people with an egg allergy.

FAQs

1. Can Someone Grow Out of An Egg Allergy?

Yes, studies show that most children outgrow an egg allergy by the timethey are 16.

2. Why Can Some People With Chicken Egg Allergies Eat Duck Eggs With No Allergic Reaction?

According to the American Academy of Allergy Asthma & Immunology, scientists know little about allergies to hen and duck eggs because research on this topic is limited. There istoo little data upon which to draw a conclusion about the possible allergenic cross-reactivity between hen and duck egg.

Scientists have observed that proteins in hen egg whites can trigger immune reactions similar to those caused by egg whites from other birds like ducks, geese, turkeys, and seagulls. However, they are unsure if the similarity in proteins causes are behind allergic reactions in people.

3. Can People With Egg Allergies Eat Cakes? 

Yes, people with egg allergies can eat cakes, provided the cakes don't contain eggs. It is possible to buy or bake egg-free cakes by using egg substitutes.

Conclusion

An intolerance to eggs is more common than an allergy to eggs. Both conditions are best treated by avoiding eggs altogether. Egg intolerance is not a serious condition and doesn't cause severe allergic reactions.

If you have an egg allergy, you don't need to miss out on your favorite treats. There are many innovative mixtures and concoctions that you can try as substitutes to the eggs in recipes. So, you can enjoy everything people without an egg allergy are eating.