My Baby Is Projectile Vomiting
Medically reviewed by Dr. Sarah Chen, MD, FAAP · Board-Certified Pediatrician
Content reviewed against published AAP, Mayo Clinic, NHS guidelines
Last reviewed:
Digestive issues are common in infants and toddlers. If your baby is experiencing is projectile vomiting, here is what you need to know.
The short answer
Occasional spit-up is normal in babies, but true projectile vomiting, where the stomach contents shoot out forcefully and travel a foot or more, is different and needs medical attention. In babies under two months, persistent projectile vomiting after feedings can be a sign of pyloric stenosis, a treatable condition where the muscle at the stomach outlet thickens and blocks food from passing through. In older babies, projectile vomiting is more commonly caused by a stomach virus.
Key takeaways
- Occasional spit-up is normal in babies, but true projectile vomiting, where the stomach contents shoot out forcefully and travel a foot or more, is different and needs medical attention. In babies under two months, persistent projectile vomiting after feedings can be a sign of pyloric stenosis, a treatable condition where the muscle at the stomach outlet thickens and blocks food from passing through. In older babies, projectile vomiting is more commonly caused by a stomach virus.
- Usually normal when: Your baby has a single episode of forceful vomiting but is otherwise happy, feeding well, and having normal wet diapers
- Call your doctor if: Your newborn under two months is projectile vomiting after most or all feedings, especially if they seem hungry immediately afterward and are not gaining weight - this could be pyloric stenosis and requires urgent evaluation
- Varies by age — see the age-by-age breakdown below
“The biggest concern with vomiting is dehydration. Young children can become dehydrated quickly, so it's important to replace fluids. Offer small amounts of an oral rehydration solution frequently.”
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What Parents Should Know
According to AAP, Mayo Clinic, NHS guidelines, occasional spit-up is normal in babies, but true projectile vomiting, where the stomach contents shoot out forcefully and travel a foot or more, is different and needs medical attention. In babies under two months, persistent projectile vomiting after feedings can be a sign of pyloric stenosis, a treatable condition where the muscle at the stomach outlet thickens and blocks food from passing through. In older babies, projectile vomiting is more commonly caused by a stomach virus. At 0-8 weeks, projectile vomiting in the first two months of life is a hallmark symptom of pyloric stenosis, which affects about two to three out of every 1,000 babies and is more common in firstborn males. The vomiting typically starts around two to three weeks of age and gets progressively worse. The baby vomits forcefully after every feeding, seems hungry immediately afterward, and may show signs of dehydration and poor weight gain. This condition requires medical evaluation and is treated with a straightforward surgical procedure. Contact your pediatrician promptly if your newborn is projectile vomiting after feeds. It is generally considered normal when your baby has a single episode of forceful vomiting but is otherwise happy, feeding well, and having normal wet diapers. However, you should contact your pediatrician promptly if your newborn under two months is projectile vomiting after most or all feedings, especially if they seem hungry immediately afterward and are not gaining weight - this could be pyloric stenosis and requires urgent evaluation.
Normal vs. Concerning
By Age
What to expect by age
0-8 weeks
Projectile vomiting in the first two months of life is a hallmark symptom of pyloric stenosis, which affects about two to three out of every 1,000 babies and is more common in firstborn males. The vomiting typically starts around two to three weeks of age and gets progressively worse. The baby vomits forcefully after every feeding, seems hungry immediately afterward, and may show signs of dehydration and poor weight gain. This condition requires medical evaluation and is treated with a straightforward surgical procedure. Contact your pediatrician promptly if your newborn is projectile vomiting after feeds.
2-6 months
After the typical window for pyloric stenosis, projectile vomiting episodes are more likely caused by a stomach virus, overfeeding, or a reaction to something in the diet. A single episode of forceful vomiting is not usually cause for alarm, but repeated episodes deserve medical attention. If your baby is formula-fed, vomiting could occasionally indicate an intolerance or allergy to the formula protein. Continue to offer small, frequent feeds and monitor for dehydration.
6-12 months
Projectile vomiting at this age is most commonly caused by viral gastroenteritis such as rotavirus or norovirus. The vomiting phase typically lasts one to two days, followed by diarrhea. Food poisoning, though less common in babies, is another possibility if your baby has started solids. Focus on preventing dehydration by offering breast milk, formula, or oral rehydration solution in small, frequent amounts after each vomiting episode.
12-36 months
Toddlers who projectile vomit usually have a stomach bug. The vomiting can be dramatic and frightening, but most viral causes resolve within 24 to 48 hours. After a vomiting episode, wait 30 to 60 minutes, then offer small sips of clear fluid or oral rehydration solution. Gradually increase the amount as your child tolerates it. If vomiting is accompanied by high fever, severe headache, neck stiffness, or confusion, seek immediate medical care as these could indicate a more serious condition.
What to Tell Your Pediatrician
- Describe when you first noticed is projectile vomiting and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your baby has more than two episodes of forceful vomiting in a day, even if they seem otherwise well between episodes.
- Mention if projectile vomiting is happening during or after introducing a new food or formula, suggesting a possible allergy or intolerance.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Your baby has a single episode of forceful vomiting but is otherwise happy, feeding well, and having normal wet diapers
- Your older baby or toddler has projectile vomiting during a known stomach virus that resolves within a day or two
- Your baby spits up frequently but the spit-up dribbles out rather than shooting forcefully, and your baby is gaining weight normally
- Your baby has more than two episodes of forceful vomiting in a day, even if they seem otherwise well between episodes
- Projectile vomiting is happening during or after introducing a new food or formula, suggesting a possible allergy or intolerance
- Your older baby or toddler has projectile vomiting lasting more than 24 hours
- Your newborn under two months is projectile vomiting after most or all feedings, especially if they seem hungry immediately afterward and are not gaining weight - this could be pyloric stenosis and requires urgent evaluation
- Your baby has projectile vomiting with blood or green bile in the vomit, a swollen or rigid abdomen, signs of dehydration, high fever, or is unusually lethargic or inconsolable
What You Can Do at Home
- Keep track of when you notice is projectile vomiting — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that your baby has a single episode of forceful vomiting but is otherwise happy, feeding well, and having normal wet diapers — this is generally within the range of normal.
- At 0-8 weeks, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Keep your baby upright for 20-30 minutes after feeding. Note any patterns between feeds and symptoms.
- While monitoring at home, seek immediate care if your newborn under two months is projectile vomiting after most or all feedings, especially if they seem hungry immediately afterward and are not gaining weight - this could be pyloric stenosis and requires urgent evaluation.
Related Resources
Vomiting Decision Tree
Evaluate vomiting severity and decide when to call the doctor.
Poop Color & Texture Guide
What your baby's poop color and consistency mean, and when to worry.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is is projectile vomiting normal?
When should I call the doctor about is projectile vomiting?
When is is projectile vomiting normal?
What causes is projectile vomiting?
What should I mention to my pediatrician about is projectile vomiting?
Is is projectile vomiting normal at 0-8 weeks?
Is is projectile vomiting normal at 2-6 months?
Should I go to the ER for is projectile vomiting?
Does is projectile vomiting go away on its own?
References
- [1]American Academy of Pediatrics. Pyloric Stenosis in Infants. HealthyChildren.org. AAP
- [2]Mayo Clinic. Pyloric stenosis - Symptoms and causes. Mayo Clinic
- [3]National Health Service. Pyloric stenosis. NHS
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss My Baby Is Projectile Vomiting.
Things to mention
- Describe when you first noticed is projectile vomiting and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your baby has more than two episodes of forceful vomiting in a day, even if they seem otherwise well between episodes.
- Mention if projectile vomiting is happening during or after introducing a new food or formula, suggesting a possible allergy or intolerance.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- Your baby has more than two episodes of forceful vomiting in a day, even if they seem otherwise well between episodes
- Projectile vomiting is happening during or after introducing a new food or formula, suggesting a possible allergy or intolerance
- Your older baby or toddler has projectile vomiting lasting more than 24 hours
Urgent signs to report immediately
- Your newborn under two months is projectile vomiting after most or all feedings, especially if they seem hungry immediately afterward and are not gaining weight - this could be pyloric stenosis and requires urgent evaluation
- Your baby has projectile vomiting with blood or green bile in the vomit, a swollen or rigid abdomen, signs of dehydration, high fever, or is unusually lethargic or inconsolable
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of is projectile vomiting are normal. Talk to your pediatrician if your newborn under two months is projectile vomiting after most or all feedings, especially if they seem hungry immediately afterward and are not gaining weight - this could be pyloric stenosis and requires urgent evaluation.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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