Learning from Experience: A Comprehensive Guide to Baby Allergies, from Symptoms to Emergency Response

 When we first started feeding our baby solid foods, he developed a rash after eating a baby food that contained egg. I looked it up online and learned that egg yolks are typically introduced after six months and egg whites after a year, so I didn't think much of it and just decided to try again later.




Then, at 500 days old, after we transitioned from baby food to regular meals, I made him an egg roll as a side dish. I'll never forget what happened next. Less than 30 minutes after he ate it, he had an acute allergic reaction with a skin rash. We rushed to the hospital and got a prescription for medication and a shot. The symptoms became even more pronounced once we got home. Hives appeared all over his body, and it broke my heart to see him scratching his skin. The powdered medicine was too bitter, and he wouldn't take it even when mixed with formula. We finally managed to get him to take it by mixing it with yogurt, which has a strong, sweet taste. Thankfully, his condition improved after about three days of medication, but I truly learned how frightening an allergy can be.




After that, we avoided eggs for a long time. At 38 months, I thought he might have outgrown the allergy, so I cautiously gave him small pieces of hard-boiled egg. There was no reaction, which made me feel relieved. Then, we ordered some KFC, and I let him eat about half of an egg tart. There were no major issues that day, but when I gave him a bath that evening, I noticed some small, bug bite-like spots on his face. I didn't think it was a big deal.

The next evening, however, I saw mosquito bite-like bumps on the back of his neck. I suspected an allergic reaction but was confused because there were no other symptoms. I applied a little steroid ointment, and it seemed to get better quickly. But the next morning, I saw that multiple hives had appeared on various parts of his body. We rushed to the hospital, and the doctor said it was an allergic reaction since the symptoms were appearing on different areas of his body at different times. I learned that allergies don't always appear immediately; sometimes they can show up a day later. I looked it up online and found that cooking eggs for a long time can reduce the allergen, so I guessed the smooth texture of the egg tart meant it was only half-cooked, which might have been the problem.



Why Do Allergies Happen?


Allergies are a result of our immune system overreacting to a specific substance (an allergen) that it mistakenly identifies as a threat. The body, perceiving a harmless protein like one found in eggs or milk as a dangerous virus, launches an attack. This immune response is what causes symptoms like hives or difficulty breathing.


What to Do When Allergic Symptoms Appear


  1. Immediately stop eating the food: If you suspect an allergic reaction, stop your child from eating the food right away.
  2. Check and document symptoms: Take photos and note the time, location, and nature of the symptoms. This information is extremely helpful for the doctor.
  3. Go to the hospital for an accurate diagnosis: Even if the symptoms are mild, you should always go to the hospital for a proper diagnosis and medication. Do not try to treat it on your own with ointment or by ignoring it.


How to Handle an Emergency Situation


If your child shows severe symptoms such as difficulty breathing, swelling of the face or throat, widespread hives, or repeated vomiting—all signs of anaphylactic shock—you must immediately call 911 or go to the emergency room.


The Core of Allergy Management: 'Avoidance' and 'Prevention'


  • Avoidance: Once an allergy is diagnosed, the most important thing is to strictly avoid the food. Make it a habit to carefully read the labels of all processed foods.
  • Prevention: Allergic reactions are also closely linked to the condition of the skin. Regularly applying moisturizer to your child's skin to maintain a healthy skin barrier can help prevent allergic reactions.


Can They Eat the Food Again if the Allergy Disappears?


It's common for children to outgrow their allergies as they get older. However, it's very dangerous to make this assumption and try to reintroduce the food at home.

  • Get a professional diagnosis with an oral food challenge: The safest way to confirm if an allergy has disappeared is by getting an oral food challenge test done at a hospital with an allergy specialist.
  • Reintroduce under a doctor's guidance: If the test confirms the allergy is gone, you should reintroduce the food in very small amounts under the guidance of a doctor to help your child's body adjust.