Key Takeaways
- Allergies involve the immune system and can be life-threatening; intolerances are uncomfortable but not dangerous.
- Allergy symptoms: hives, swelling, difficulty breathing. Intolerance symptoms: bloating, tummy aches, changes in bowel movements.
- Always track symptoms and work with your GP or a qualified nutritionist. And never try elimination diets alone. At Organix, we know how confusing it can be to tell the difference between allergies and intolerances in little ones. That’s why we’ve teamed up with nutritionist Clemmie to help you feel confident about your child’s nutrition and wellbeing.
The one thing parents worry about most? Whether their child’s symptoms are an allergy or just an intolerance. And honestly, the confusion is totally understandable—the symptoms can look so similar!
Here’s the key difference: allergies involve your child’s immune system and can be life-threatening. Think hives, swelling, or difficulty breathing. Intolerances, on the other hand, are uncomfortable but not dangerous—think bloating, tummy aches, or changes in bowel movements.
Clemmie wishes someone had told her this when she was a new mum, worrying about every little symptom.
Here’s what to do: Grab a notebook and track your child’s food and symptoms for 2 to 3 weeks. Then—and this is so important—work with your GP or a qualified nutritionist. Never attempt elimination diets alone, especially with children. And remember, adapting meals doesn’t mean boring food! Your child can still enjoy delicious, nourishing meals while you figure things out together.
Most Common Baby Allergies
• Cow’s milk, eggs, gluten, nuts, peanuts, soya, fish, shellfish, celery, mustard, sesame, sulphur dioxide (in dried fruit/juices).
• Allergies can develop at any age, but are most common when introducing new foods.
• NHS advice: Introduce potential allergens one at a time from around 6 months. If your child has a family history of allergies or already has an allergy/eczema, consult your GP before introducing new foods.
How to Spot the Signs of Allergies in Babies and Toddlers
• Sneezing, runny nose, red/itchy eyes, wheezing, coughing, rash, worsening eczema, vomiting, tummy pain, diarrhoea, constipation.
• Severe reactions (anaphylaxis): Swelling of the face, lips, tongue, difficulty breathing, and collapse. Call 999 immediately if you suspect anaphylaxis.
• NHS resource: Food allergies in babies and young children
What to Do if You See These Allergy Symptoms
• Stop giving the suspected food and seek medical advice.
• Keep a food and symptom diary for 2–3 weeks to help your GP or nutritionist identify triggers.
• Never attempt elimination diets without professional support.
What is Food Intolerance in Babies & Toddlers?
• Food intolerance does not involve the immune system and is not life-threatening.
• Symptoms: Bloating, tummy pain, diarrhoea, wind, but not hives or breathing problems.
• NHS resource: Food intolerance - NHS
Spotting the Difference Between Allergies and Intolerances
• Allergies: Rapid onset, immune-related, can be severe.
• Intolerances: Slower onset, digestive symptoms, not dangerous.
• Always consult a healthcare professional for diagnosis.
Other helpful resources: