Pyloric Stenosis Specialists in Karnataka
Pyloric stenosis is a condition affecting young infants in which the muscle at the outlet of the stomach, called the pylorus, becomes progressively thickened an…
Health Conditions A–Z
LabDekho500+ Diseases & Conditions Explained
Understand symptoms, causes, treatment options and prevention for hundreds of conditions — written for patients, reviewed for accuracy.
What is Pyloric Stenosis?
Pyloric stenosis is a condition affecting young infants in which the muscle at the outlet of the stomach, called the pylorus, becomes progressively thickened and enlarged, narrowing the passage through which food moves from the stomach into the small intestine. This progressive narrowing typically develops over the first few weeks of life and leads to forceful vomiting after feeding as the stomach struggles to empty against the obstruction. It is one of the most common conditions requiring surgery in infancy, and prompt diagnosis and correction of the resulting dehydration and electrolyte imbalance are important before surgical repair.
Moderate
Uncommon — affects approximately 2-3 per 1,000 live births, more common in firstborn boys
No
Causes of Pyloric Stenosis
The exact cause is not fully understood, but it is believed to result from a combination of genetic and environmental factors that lead to progressive thickening of the pyloric muscle over the first weeks of life. Risk factors include being a firstborn male child, a family history of pyloric stenosis, and exposure to certain antibiotics in early infancy. It typically develops after birth rather than being present at delivery, distinguishing it from a purely congenital malformation.
Symptoms of Pyloric Stenosis
Forceful, projectile vomiting shortly after feeding, persistent hunger and eagerness to feed again soon after vomiting, weight loss or poor weight gain, dehydration signs such as fewer wet diapers, visible wave-like stomach contractions after feeding, a palpable small, olive-shaped mass in the upper abdomen, irritability
Treatment & Types of Pyloric Stenosis in Karnataka
Before surgery, correcting dehydration and electrolyte imbalances with intravenous fluids is essential, as this significantly reduces surgical risk. The definitive treatment is a surgical procedure called pyloromyotomy, in which the surgeon carefully cuts through the thickened pyloric muscle to widen the passage while leaving the inner lining intact, and infants typically resume normal feeding within a day or two after surgery with excellent long-term outcomes.
Pyloric stenosis is generally described by severity of the pyloric muscle thickening and the resulting degree of obstruction rather than distinct disease subtypes, ranging from partial narrowing causing intermittent vomiting to complete obstruction causing forceful vomiting after every feed. It is distinguished from other causes of infant vomiting by being an acquired, progressive condition that develops over the first few weeks of life rather than a malformation present at birth, which is why symptoms typically worsen gradually rather than appearing immediately after delivery.
Pediatric Surgery Specialists in Karnataka (0)
No specialists listed yet in Karnataka — browse all doctors instead.
Frequently Asked Questions
Is pyloric stenosis present at birth?
No, it typically develops after birth rather than being present at delivery, with the pyloric muscle progressively thickening over the first few weeks of life, distinguishing it from a congenital malformation. This is why symptoms usually don't start until around three to five weeks of age.
Is surgery always necessary for pyloric stenosis?
Yes, surgery called pyloromyotomy is the definitive treatment since the narrowed muscle does not resolve on its own, though correcting dehydration and electrolyte imbalances with intravenous fluids beforehand is essential to reduce surgical risk. Outcomes after surgery are generally excellent, with infants typically resuming normal feeding within a day or two.
What makes vomiting from pyloric stenosis different from normal infant spit-up?
The vomiting in pyloric stenosis is forceful and projectile, occurring shortly after feeding, and the baby typically remains hungry and eager to feed again right after vomiting, unlike the more casual spit-up common in healthy infants. A palpable small, olive-shaped mass in the upper abdomen is another distinguishing sign a doctor may find on examination.
Is pyloric stenosis hereditary?
A family history of pyloric stenosis does raise risk, and it's also more common in firstborn male infants, suggesting a genetic component alongside environmental factors, though the exact cause remains not fully understood. Parents who had pyloric stenosis themselves should mention this to their pediatrician if their baby shows any suggestive symptoms.
How soon after surgery can a baby feed normally?
Most infants can resume feeding within a day or two after pyloromyotomy, with feeding volumes gradually increased as tolerated, and long-term outcomes are excellent with no lasting digestive problems expected. Full recovery from the surgery itself is typically quick given how minimally invasive the procedure is.