Pyloric stenosis

Overview

The muscle at the stomach outlet thickens and blocks milk from passing into the intestine.

Babies vomit forcefully after feeds and then seem hungry again, and can quickly become dehydrated.

Symptoms

Common signs:

• Forceful vomiting in a young baby
• Forceful (projectile) vomiting in a baby

Less common

• Hungry after vomiting
• Fewer wet diapers
• Weight loss

Look up a symptom: Forceful (projectile) vomiting in a baby · Vomiting

When to get medical care

Causes

Muscle thickening.

Does it spread or run in families?

• It isn't contagious. You can't catch it from someone else.

Who is more likely to get it

• Boys

Possible complications

• Dehydration: From forceful vomiting

Diagnosis

Ultrasound.

Treatment

Get care.

Self-care

• Count wet diapers
• Note how forceful the vomiting is

Surgery.

Prevention

To lower your risk or prevent problems:

• There is no known way to prevent it. Early checkups help find it sooner.

Which doctor treats this

• Start with your child's pediatrician.
• They may send you to a pediatric specialist: a pediatric surgeon.

Living with it

Support groups and helplines

• Genetic and Rare Diseases Information Center (GARD): Free NIH information on rare diseases, including where to find experts and patient groups.
• National Organization for Rare Disorders (NORD): Patient groups, help finding care, and aid programs for rare diseases.

Children, pregnancy, and older adults

• First-born boys: More common.

For caregivers

• Learn the warning signs and when to call the doctor or 911.
• Keep a list of your child's medicines, doses, and doctors on your phone.
• Tell teachers, coaches, and sitters what to watch for and what to do.
• Take breaks and ask for help. Caregivers need care too.

Outlook

Cured with surgery.

Babies usually feed normally within a day of surgery.

Getting ready for your visit

Bring a list of your symptoms and medicines.

What to bring

• A list of your medicines and supplements
• Notes on when symptoms started and what makes them better or worse

Questions to ask

• How long is recovery after surgery?

Research studies

Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.

Search ClinicalTrials.gov for studies on Pyloric stenosis