Vomiting in Children
Vomiting is common — but it is not always an infection
Vomiting Is a Symptom, Not a Diagnosis
Vomiting is a symptom rather than a diagnosis. Viral gastroenteritis is a common cause, but children can vomit for many other reasons. The possible cause depends on the child's age, associated symptoms and examination findings.
Vomiting is common in children and can occur with infections, gastrointestinal conditions, feeding problems and a range of other medical conditions.
Vomiting without diarrhoea should not automatically be assumed to be gastroenteritis. Other causes should be considered, particularly when there are additional warning signs.
Common Causes
Infections
Common causes- Gastroenteritis
- Urinary tract infection
- Pneumonia
- Meningitis
Digestive & Feeding Causes
- Food-related illness
- Reflux or feeding-related problems
- Food allergy or intolerance
- Appendicitis
- Bowel obstruction
Other Causes
- Migraine or cyclic vomiting
- Motion sickness
- Coughing or respiratory illness
- Head injury or raised intracranial pressure
- Metabolic conditions, including diabetic ketoacidosis
The possible cause depends on the child's age, associated symptoms and examination findings. A child who vomits without diarrhoea may need assessment for causes other than gastroenteritis.
What Parents Can Observe
When vomiting started and how often it occurs.
Whether the child can keep fluids down and whether vomiting occurs after drinking.
Urine output and, in younger children, the number of wet nappies.
Fever, diarrhoea, respiratory symptoms, tummy pain, headache or abdominal swelling.
Unusual sleepiness, behaviour changes, confusion or reduced responsiveness.
The colour and appearance of the vomit, including whether it is green or contains blood.
Supportive Care at Home
- Offer small amounts of fluid frequently rather than a large volume at once.
- Continue breastfeeding or formula feeding, usually in smaller, more frequent feeds.
- Oral rehydration solution may be useful, particularly when vomiting occurs with diarrhoea.
- Once vomiting settles, allow the child to return to their usual age-appropriate diet as tolerated.
- Avoid giving anti-vomiting or anti-diarrhoeal medicines unless advised by a doctor.
Oral or enteral rehydration is generally preferred when the child can tolerate it.
When to Arrange a Paediatric Assessment
- Vomiting persists or repeatedly recurs.
- Vomiting prevents adequate fluid intake.
- There is poor feeding or reduced urine output.
- Vomiting occurs with significant fever, abdominal pain or headache.
- There is poor growth or weight loss.
- Vomiting occurs repeatedly without an obvious explanation.
A child who is vomiting does not always need medication or investigations. The priority is to assess hydration and look for clues to the underlying cause. Most otherwise well children with isolated vomiting do not require extensive investigations.
Seek Urgent Medical Care If
Green Vomit
Dark green or bilious vomiting should be treated as possible bowel obstruction until proven otherwise and requires urgent assessment.
Blood in Vomit
Vomiting blood requires medical assessment, particularly if significant or recurrent.
Severe Abdominal Symptoms
- Severe or localised abdominal pain
- Increasing abdominal distension
- Guarding or the child does not want to move
- Persistent vomiting with worsening abdominal symptoms
Neurological Warning Signs
- Severe or persistent headache
- Neck stiffness or photophobia with fever
- Unusual drowsiness, confusion or difficulty waking
- Vomiting following a significant head injury
Significant Dehydration
- Very little or no urine
- Very dry mouth
- No tears
- Sunken eyes
- Marked lethargy
- Unable to keep fluids down
What Happens During a Consultation?
The paediatrician will assess how long the vomiting has been present, how often it occurs, whether it is related to feeds or food, and whether there are associated symptoms such as fever, diarrhoea, tummy pain, cough or signs of dehydration.
Most cases of childhood vomiting can be assessed clinically. Blood tests, urine tests, imaging or other investigations are only needed when the history or examination suggests they may be helpful.
Frequently Asked Questions About Vomiting in Children
Is Vomiting in Children Always Caused by a Stomach Infection?
No. Viral gastroenteritis is a common cause, but vomiting can also occur with other infections, food-related illness, reflux, food allergy or intolerance, migraine, motion sickness, respiratory illness, head injury, bowel obstruction and other medical conditions. Vomiting without diarrhoea should not automatically be assumed to be gastroenteritis.
What Should I Give My Child After They Vomit?
Offer small amounts of fluid frequently rather than a large amount at once. Continue breastfeeding or formula feeding, usually with smaller, more frequent feeds. Once vomiting settles, gradually return to the child's usual age-appropriate diet as tolerated.
What If My Child Keeps Vomiting and Cannot Keep Fluids Down?
Persistent vomiting that prevents adequate fluid intake can lead to dehydration. Arrange a paediatric assessment, particularly if your child is passing very little urine, has a dry mouth, has no tears, appears unusually sleepy or cannot keep fluids down.
Does My Child Need Anti-Vomiting Medicine?
Not necessarily. A child who is vomiting does not always need medication. Treatment depends on the child's age, symptoms, hydration status and underlying cause. Anti-vomiting medicines should not be given routinely unless advised by a doctor.
Does Vomiting Always Mean My Child Needs Tests?
No. Most cases of childhood vomiting can be assessed clinically. Blood tests, urine tests, imaging or other investigations are generally considered when the history or examination suggests they may be helpful.
When Is Green Vomit an Emergency?
Dark green or bilious vomiting requires urgent medical assessment because it can indicate bowel obstruction. It should be treated as possible bowel obstruction until proven otherwise.
Is Blood in Vomit Serious?
Vomiting blood requires medical assessment, particularly when the amount is significant or the vomiting is recurrent.
When Should I Take My Child to a Doctor for Vomiting?
Arrange a medical review if vomiting persists or repeatedly recurs, prevents adequate fluid intake, is associated with poor feeding or reduced urine output, or occurs with significant fever, abdominal pain, headache, poor growth or weight loss.
Seek urgent medical care if your child has green vomit, blood in vomit, severe abdominal symptoms, neurological warning signs, significant dehydration or vomiting following a significant head injury.
Key Takeaways
- Vomiting is a symptom, not a diagnosis.
- Gastroenteritis is common, but vomiting can have many other causes.
- Vomiting without diarrhoea should not automatically be assumed to be gastroenteritis.
- The immediate priority is maintaining hydration and monitoring urine output.
- Offer small, frequent amounts of fluid rather than a large volume at once.
- Continue breastfeeding or formula feeding, usually in smaller, more frequent feeds.
- Most otherwise well children with isolated vomiting do not require extensive investigations.
- Anti-vomiting and anti-diarrhoeal medicines should not be given routinely unless advised by a doctor.
- Dark green or bilious vomit, blood in vomit, severe abdominal symptoms, neurological warning signs and significant dehydration require urgent medical assessment.
- When vomiting persists or repeatedly recurs, a paediatric assessment can help identify the underlying cause.
The goal is not simply to stop the vomiting — it is to maintain hydration, recognise warning signs and identify the cause when further assessment is needed.
Paediatric Vomiting Assessment in Johor Bahru
If your child has persistent or recurrent vomiting, difficulty keeping fluids down, reduced urine output, abdominal pain, fever, headache or other concerning symptoms, a paediatric assessment can help identify the possible cause and determine whether treatment or further investigation is needed.
Parents in Johor Bahru and surrounding areas can contact Southern Child Specialist Clinic to arrange a paediatric consultation.
Need a Paediatric Assessment?
Contact Southern Child Specialist Clinic to arrange a paediatric consultation.
Book a Paediatric Appointment If your child has green vomit, blood in vomit, severe abdominal pain or swelling, difficulty waking, significant dehydration, or other serious warning signs, seek emergency medical care without delay.
