Hypertrophic pyloric stenosis is a condition characterised by marked thickening of the pyloric muscle in neonates, leading to non-bilious projectile vomiting, electrolyte disturbances and failure to ...

Bottle-feeding is associated with hypertrophic pyloric stenosis (HPS), according to a population-based case-control study. The effect is most pronounced in the children of older and multiparous women.

This is because projectile vomiting is not just throwing up. It involves more force. Sometimes, a child’s vomit, when "released," can go flying across a room. A child who vomits way too much and with ...