What causes nausea and vomiting?

Patient's question:

5 My son has been eating things he doesn't like since he started eating. Whenever he puts them in his mouth, he gets nauseous and vomits everything out of his stomach. Now, whenever he cries or laughs hard, he vomits. Additionally, his mouth has a bad smell every morning, and it goes away after eating something. What could be the reason? Thank you.

Doctor's answer:

Sometimes it may be a sign before spitting up milk, or it could be due to indigestion or a cold. Also, be mindful of the possibility of swollen tonsils. Additionally, feeding the nipple too deep into the baby's mouth may stimulate the root of the tongue and throat, which can also cause this symptom. There are several reasons that can cause a baby to vomit, such as: inflammation of the throat, eating too quickly, abnormal gastric digestive function, or a functional defect of the lower esophageal sphincter.
Mothers should pay attention to the baby's mood, milk intake, supplementary food intake, and bowel movements. If everything is normal in these aspects, there is no need to worry too much. During feeding, it is important to give the baby warm water, try to feed light and easily digestible supplementary foods, ensure the nipple hole is filled with milk to avoid the baby inhaling too much air, eat small meals frequently, and reduce exposure to cold and hot stimuli.
After improving feeding methods, the baby's vomiting should improve.

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