Baby doesn't know what's wrong, vomits after eating milk

Patient's question:

I don't know what's wrong, but after eating milk, he vomited badly, and some white foam came out! About the past treatment and its effects: none. What kind of help is needed: how to relieve, reduce the baby's stress

Doctor's answer:

Your child's condition exhibits symptoms of enteritis, which generally includes nausea, vomiting, retching, and anorexia. It may also be related to incorrect feeding posture.
Advice: For your situation, I recommend first focusing on rest. A light, warm, and easily digestible diet is very important. It is advised to encourage your child to feed actively while keeping their head up and gently patting their back. If this does not improve, it is best to take your child to the hospital for a blood test to check further. Wishing your child a speedy recovery.