Reflux is the medical term for when some of the stomach contents comes back up from the stomach and travels up the oesophagus (tube from the stomach to the mouth). The stomach contents are acidic which can cause irritation and discomfort. This can make your baby vomit or regurgitate milk – they may cry for long periods, arch their backs and refuse feeds.
Babies take in large volumes of milk as they are growing rapidly. They have small stomachs and a short oesophagus, meaning that the stomach contents can overspill easily.
