Projectile Vomiting
Unusually forceful vomiting that travels a distance
Quick Facts
- Type: Digestive / neurological symptom
- Classic cause in babies: Pyloric stenosis
- Concerning with: Severe headache, head injury
- Seek urgent care: Dehydration, blood in vomit, in infants
Overview
Projectile vomiting describes vomiting that is sudden and so forceful that stomach contents are thrown out a noticeable distance, rather than welling up gently. It often happens with little or no preceding nausea, which sets it apart from ordinary vomiting. The force comes from strong, abrupt contractions of the stomach and abdominal muscles.
While a single forceful vomit can occur with ordinary stomach upset, true repeated projectile vomiting can point to a blockage in the digestive tract or to raised pressure inside the skull. It is taken especially seriously in young infants, where it can signal a narrowing of the stomach outlet. The pattern, the person's age, and the accompanying symptoms all help reveal the cause.
Common Causes
Forceful vomiting has several possible explanations depending on age and context:
- Pyloric stenosis: In babies around 2 to 8 weeks old, thickening of the muscle at the stomach outlet causes classic projectile vomiting after feeds. See pyloric stenosis.
- Gastrointestinal blockage: An obstruction lower in the gut can force food back up with pressure.
- Gastroenteritis: Some viral stomach infections, such as those in gastroenteritis, can produce forceful vomiting.
- Raised pressure in the brain: Head injury, infection, or other causes of swelling can trigger vomiting without nausea.
- Migraine and cyclic vomiting: Severe episodes, including cyclic vomiting syndrome, can be violent.
Associated Symptoms
The symptoms that come with projectile vomiting are important clues:
- Hunger and eagerness to feed soon after vomiting (typical of pyloric stenosis in babies)
- Ongoing nausea or abdominal pain with stomach infections or blockage
- Diarrhea and fever when an infection is the cause
- Severe headache, confusion, or vision changes when brain pressure is involved
- Signs of dehydration such as dry mouth, sunken eyes, and reduced urination
Diagnosis & Evaluation
A doctor will ask about the timing, force, and content of the vomiting, recent illness or head injury, and how much fluid the person can keep down. Examination focuses on hydration, the abdomen, and, where relevant, the nervous system.
- Ultrasound: The main test for suspected pyloric stenosis in an infant.
- Blood tests: To check hydration, salts, and signs of infection.
- Imaging: X-rays or scans of the abdomen for suspected obstruction, or a brain scan if raised pressure is a concern.
Treatment & Management
Treatment depends entirely on the underlying cause.
- Rehydration: Small, frequent sips of oral rehydration solution, or fluids given through a vein in hospital, replace what is lost.
- Surgery: Pyloric stenosis is corrected with a minor, highly effective operation, after which feeding usually returns to normal.
- Treating infection: Most viral causes settle with rest and fluids; bacterial causes may need specific treatment.
- Urgent care for brain causes: Raised pressure inside the skull is a medical emergency requiring immediate hospital assessment.
Never try to push food or large drinks during active forceful vomiting; offer small amounts once it eases.
Self-Care & Prevention
While the underlying cause needs medical treatment, some general measures can reduce the impact of forceful vomiting and support recovery:
- Replace fluids early: Begin small, frequent sips of an oral rehydration solution as soon as vomiting eases to head off dehydration.
- Reintroduce food gradually: Once the stomach settles, start with bland, easy-to-digest foods rather than large or fatty meals.
- Feed babies carefully: For infants, smaller, more frequent feeds with regular pauses to bring up wind can help, though they will not fix a true blockage.
- Practise good hygiene: Frequent handwashing and safe food handling reduce the stomach infections that can trigger vomiting.
- Keep a record: Noting the timing, force, and appearance of the vomiting helps your doctor identify the cause.
Remember that self-care does not replace medical assessment when projectile vomiting is repeated, especially in babies or when warning signs are present.
When to See a Doctor
Seek prompt medical care for repeated projectile vomiting, and seek emergency care immediately if there is:
- Forceful vomiting in a baby under 3 months, or any infant who seems dehydrated or is not feeding
- Vomiting after a head injury, or with severe headache, confusion, drowsiness, or a stiff neck
- Blood in the vomit or material that looks like coffee grounds
- Green or yellow (bile-stained) vomit, which can signal a blockage
- Signs of dehydration: very little urine, no tears, sunken eyes, or extreme sleepiness
Frequently Asked Questions
What does projectile vomiting in a baby usually mean?
In a baby a few weeks old, repeated forceful vomiting after feeds is a classic sign of pyloric stenosis, a narrowing of the stomach outlet. The baby often seems hungry again soon afterward. It needs prompt medical assessment, usually with an ultrasound, because the condition is easily corrected with surgery.
Is projectile vomiting always serious?
Not always. A single forceful vomit can happen with an ordinary stomach bug. But repeated projectile vomiting, especially in babies, after a head injury, or with severe headache, can signal a blockage or raised pressure in the brain and should be checked urgently.
How is projectile vomiting different from regular vomiting?
Projectile vomiting is more sudden and forceful, ejecting contents a noticeable distance, and often comes with little or no warning nausea. Regular vomiting tends to follow a wave of nausea and is less explosive.
What should I do while waiting to see a doctor?
Offer small, frequent sips of an oral rehydration solution to prevent dehydration, and watch for warning signs. Do not force large drinks or food. Seek emergency care if there is blood or bile in the vomit, signs of dehydration, or any head injury or neurological symptoms.
References
- Mayo Clinic. Pyloric stenosis — Symptoms and causes.
- MedlinePlus, U.S. National Library of Medicine. Vomiting.
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Symptoms and Causes of Gastroenteritis.