What is the reason for severe infant milk reflux?

Patient's question:

No

Doctor's answer:

Spitting up is a common phenomenon in infants, caused by two main reasons: first, it is a symptom of systemic or gastrointestinal diseases; second, the anatomical and physiological characteristics of the infant's gastrointestinal tract make it prone to spitting up. Overall, spitting up caused by the second reason is more common.