Egg Allergy: Symptoms, Causes & Treatment

Egg allergy is among the most common food allergies in children and usually appears in early childhood. It is a reaction of the immune system in which the body mistakenly treats proteins in eggs as a harmful substance, releasing an allergic response. The allergy-causing proteins are present more in the egg white, but some affected people react to the yolk too.

Egg-allergy symptoms usually appear within minutes to hours of eating it and range from mild to severe. They include skin rash, hives, eczema, and facial swelling, digestive symptoms such as vomiting and cramps, and respiratory symptoms, and in severe cases may reach life-threatening anaphylaxis. One challenge is that eggs are present in many processed foods and baked goods covertly, requiring careful label reading.

Managing egg allergy relies on avoiding eggs and their products, while noting their different names in food ingredients. For infants relying on milk, the doctor guides dietary adjustment. It is important to discuss the matter of certain vaccines with the doctor, as most modern vaccines are safe for those with egg allergy. The reassuring news is that the vast majority of children outgrow egg allergy with age, and many tolerate well-baked egg within certain products. Because of the importance of correct diagnosis and an emergency plan for those at risk of a severe reaction, evaluation by a pediatrician or allergist is essential.

• Skin rash, hives, eczema, and facial swelling.
• Vomiting, cramps, and diarrhea.
• Runny nose, wheezing, and cough.
• In severe cases: anaphylaxis (breathing difficulty, swelling, collapse) requiring emergency care.

• An immune reaction to egg proteins (especially the white).
• Immaturity of the immune system in young children.
• A genetic predisposition to allergy and having eczema or other allergies.

• Clinical assessment and symptom history and its relation to eggs.
• Allergy tests (skin-prick or IgE test).
• An oral food challenge under medical supervision when needed.

Avoidance

• Avoiding eggs and their products and reading food labels carefully.
• Noting the different names of egg in ingredients.

Management and emergency

• An emergency plan and adrenaline auto-injector for those at risk of a severe reaction.
• Discussing vaccines with the doctor (most are safe).

This content is educational and does not replace consulting a pediatrician or allergist.

• Life-threatening anaphylaxis in severe cases.
• Accidental exposure due to hidden egg in foods.
• Parental anxiety and difficulty choosing foods.

• Careful avoidance once allergy is confirmed and reading labels.
• Carrying an adrenaline auto-injector and an emergency plan for those at risk.
• Doctor follow-up to assess outgrowing the allergy with age.