Also known as: Baby Reflux, Infant Spit-Up, Infant Acid Reflux, Baby Spitting Up, Baby Regurgitation, Milk Coming Back Up In Babies
Last Updated: October 31, 2026
Reflux occurs when a baby brings up milk or is sick during or shortly after feeding. It's a very common condition, typically starting before 8 weeks of age, and usually improves on its own by the time the baby is 1 year old. The primary cause of reflux in babies is a weak ring of muscle at the top of their food pipe (oesophagus). This muscle allows milk to come back up easily. As your baby grows, this muscle strengthens, and the reflux should stop. Most cases of reflux don't require medical treatment, especially if the baby is otherwise happy, healthy, and gaining weight. Simple home management strategies are often effective in reducing discomfort.
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Affects
Babies under 1 year
Prevalence
Very common
Diagnosis
Symptom observation, medical review
Treatment
Lifestyle changes, thickened feeds, medication
Consult with our healthcare professionals to discuss your symptoms and treatment options.