Pyloric stenosis is a condition in which a baby's pylorus (the
connection between the stomach and the first part of the small intestine)
gradually swells and thickens, which interferes with food entering the
intestine. This causes the baby to vomit most or all of his or her
Vomiting caused by pyloric stenosis usually starts gradually and
gets worse over time. As the pylorus becomes tighter, the baby vomits more
frequently and more forcefully (projectile vomiting). As vomiting continues,
the baby will lose weight and become dehydrated.
Pyloric stenosis can occur any time between birth and 5 months of
age, but it most commonly develops about 3 weeks after birth. The start of
symptoms may be delayed if the baby was premature.
Pyloric stenosis is corrected with surgery (pyloromyotomy). After a
baby has the surgery, pyloric stenosis usually does not occur again.
December 9, 2011
John Pope, MD - Pediatrics & Brad W. Warner, MD - Pediatric Surgery
How this information was developed to help you make better health decisions.
To learn more visit Healthwise.org
© 1995-2013 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
We are happy to take your appointment request over the phone, or, you may fill out an online request form.
Disclaimer: The information on this website is for general informational purposes only and SHOULD NOT be relied upon as a substitute for sound professional medical advice, evaluation or care from your physician or other qualified health care provider.