How to solve the problem of a child spitting up milk

Patient's question:

Nursing, deep sleep unrest for 5 days. Past treatment and effectiveness: Taking cold medicine was ineffective. What kind of help is desired: Hello, what is the cause, how should it be treated

Doctor's answer:

First, it's important to determine whether the baby is experiencing pathological vomiting or physiological reflux. Pathological vomiting is characterized by a larger volume and can occur shortly after changing the diaper or even half an hour later, with the child showing expressions of openness, stretching the neck, and pain. On the other hand, physiological reflux is usually less in volume and often happens right after feeding, typically spitting out only one or two mouthfuls before stopping.
Advice: Vomiting is a common phenomenon in infants and can be caused by two main reasons: first, it may be a symptom of systemic or gastrointestinal diseases; second, the anatomical and physiological characteristics of the infant's gastrointestinal tract make it more prone to vomiting.