Vomiting in Children - When to Call the Doctor

The greatest risk of vomiting due to gastroenteritis is
dehydration. Call your doctor if your child has diarrhea,
refuses fluids, is not urinating, cries without tears, has
a dry mouth, or seems confused. You should also call if
vomiting persists more than two days, which increases the
risk of dehydration.

The following symptoms may indicate a condition more
serious than gastroenteritis and require immediate medical
attention:
* projectile vomiting in an infant
* vomiting accompanied by fever
* repeated vomiting of green or yellow bile
* stomach feels hard and bloated in between vomiting
episodes
* vomit resembles coffee grounds
* vomiting blood
* vomiting follows head injury
* vomiting during recovery from a viral infection