A paediatrician reassuring a child and parent during a vomiting concern visit
Parent guide · Gut & digestion

Vomiting in Children

Vomiting in children is common during infections but can also be linked to reflux, food-related illness, migraine, medicines, digestive obstruction or other medical conditions. The child's age, hydration, colour of the vomit, pain and associated symptoms determine how urgently the child should be assessed.

Common signs

What parents may notice

  • Repeated vomiting
  • Unable to keep fluids down
  • Reduced urine output
  • Dry mouth or no tears
  • Abdominal pain
  • Weight loss or poor feeding
  • Vomiting that keeps returning without infection
Possible reasons

What can cause it?

Common causes include viral gastroenteritis, food-related illness and reflux. Persistent, recurrent or unusual vomiting needs assessment because the possible causes differ across infancy, childhood and adolescence.

When to book

When should your child be assessed?

  • Vomiting keeps returning
  • The child is losing weight or not growing
  • There is associated headache or abdominal pain
  • Symptoms continue after an infection has passed
  • The cause or treatment remains unclear
Urgent warning signs

When to seek immediate care

  • Green vomit
  • Blood or coffee-ground material in vomit
  • Severe abdominal pain or swelling
  • Marked dehydration
  • Altered consciousness, severe headache or neck stiffness
At the specialist visit

How the concern may be evaluated

  • Hydration and clinical assessment
  • Review of timing, colour, triggers and associated symptoms
  • Selective testing if the pattern suggests another cause
  • A rehydration, treatment and follow-up plan
Prepare

What to do before the visit

  • Note frequency and colour
  • Track fluid intake and urine output
  • Bring current medicines and previous reports
  • Do not force large amounts of fluid at once
Questions parents ask

The real questions, answered.

Not what we wish you'd ask. What you're actually thinking when you find this page.

Book a consultation
What does green vomit mean?

Green vomit can indicate bile and requires urgent medical assessment.

How can I prevent dehydration?

Offer small, frequent amounts of an appropriate oral rehydration solution when advised, and seek care if the child cannot keep fluids down.

When should an infant with vomiting be seen?

Young infants should be assessed promptly, particularly with repeated, forceful, green or blood-stained vomiting or poor feeding.

Can migraine cause vomiting in children?

Yes. Some children experience nausea or vomiting with migraine, but recurring symptoms need clinical assessment.

Will my child need tests?

Testing depends on age, hydration, examination and the symptom pattern.

Persistent symptoms deserve a clear next step.

Speak with Paediatric Gastroenterology or contact our team to organise the right starting point.