Cow's Milk Allergy in Babies & Children
Expert assessment and management of cow's milk allergy (CMPA) and cow's milk protein intolerance (CMPI) in infants and children across Belfast and Northern Ireland.
Cow's milk allergy (CMA) is the most common food allergy in infants, affecting approximately 2–3% of babies. It occurs when the immune system reacts to proteins in cow's milk — most commonly casein and whey. There are two main types: IgE-mediated (immediate) and non-IgE-mediated (delayed).
Dr Mugilan Anandarajan is a Consultant Paediatrician with a special interest in allergy, eczema and respiratory conditions. He provides specialist assessment and management of cow's milk allergy for babies and children at Kingsbridge Private Hospital and Ulster Independent Clinic in Belfast.
Symptoms to Look Out For
Hives, swelling, vomiting, runny nose — appearing within minutes to 2 hours of milk exposure
Eczema, reflux, vomiting, loose stools, constipation, blood in stools — appearing hours to days after exposure
Colic, excessive crying, poor weight gain, feeding difficulties — particularly in formula-fed infants
Eczema, hives, redness around the mouth — often the first sign in infants
Runny nose, cough, wheeze — more common in IgE-mediated allergy
Severe reactions are less common with cow's milk than peanut, but can occur in IgE-mediated allergy
When to Seek Specialist Assessment
- Your baby reacts to cow's milk formula or dairy in your diet (if breastfeeding)
- Your baby has eczema, reflux or gut symptoms that are not responding to standard treatment
- You are unsure whether your child has IgE or non-IgE cow's milk allergy
- You need advice on the most appropriate hypoallergenic formula for your baby
- You want to introduce dairy foods and need guidance on the milk ladder
- Your child has been avoiding dairy and you want to know if they have outgrown their allergy
Allergy Testing Methods
Skin Prick Testing
Tests for IgE-mediated cow's milk allergy using milk extract. Results in 15–20 minutes. Most useful for immediate-type reactions.
Specific IgE Blood Testing
Measures milk-specific IgE antibodies. Component testing (casein, alpha-lactalbumin, beta-lactoglobulin) can help predict severity and likelihood of outgrowing allergy.
Milk Ladder Assessment
Structured approach to reintroducing cow's milk in progressively less-heated forms — from well-baked milk through to fresh milk — guided by allergy test results.
Management & Treatment Plan
Frequently Asked Questions
Most children with cow's milk allergy outgrow it by age 3–5. Dr Anandarajan will provide a personalised management plan and milk ladder guidance to help your child safely reintroduce dairy as their tolerance develops.