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Living with Necrotizing enterocolitis

A condition in which parts of a newborn's intestines are damaged, most often in premature babies.

Understanding Necrotizing enterocolitis

Necrotizing enterocolitis (NEC) is a condition in which the intestinal tract is injured and some intestinal tissue dies, mostly in newborns.

It most often occurs in premature babies, but can also occur in babies born at or near term. Signs can include a swollen belly, bloody stools, vomiting of green-yellow fluid, and gas in the bowel wall on an x-ray. Some babies have unstable body temperature, low energy, or signs of sepsis (a serious reaction to infection).

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Swollen belly (abdominal distention)
  • Bloody stools or diarrhea
  • Vomiting of green-yellow fluid
  • Poor feeding
  • Low energy
  • Bluish skin color (cyanosis)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include digestive system specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Digestive system specialists (gastroenterologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with AGA GI Patient Center and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
How is my baby's belly being monitored?
When can feeding start again?
What long-term follow-up will my baby need?

Quick facts

Symptoms usually startNewborn

The exact cause of NEC is unknown.

Gastrointestinal

Also known as: nec

Patient organizations

Source: NIH GARD · Necrotizing enterocolitisGARD ID 9767 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Necrotizing enterocolitis.

Explore the Necrotizing enterocolitis blog

Explore research for Necrotizing enterocolitis

Explore actively recruiting Necrotizing enterocolitis studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Necrotizing enterocolitis with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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