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Premature baby (born early)

Also called: Premature baby, preterm newborn, preemie, born early

A baby born before 37 weeks. Babies born very early may need NICU care for breathing, feeding, and warmth, and extra follow-up as they grow.

PretermBefore 37 weeks
Common needsBreathing help, feeding help, warmth
AgeUse corrected age for milestones

Overview

Corrected age = age from birth minus weeks born early.

Preemies need extra eye, hearing, and development checks.

Symptoms

Common signs:

  • Baby born early

Less common

  • Feeding trouble
  • Breathing pauses

When to get medical care

Call 911A baby who is limp, hard to wake, struggling to breathe, or has blue or gray lips: call 911.
Get care todayFever, poor feeding, or fewer wet diapers.
See a doctor soonMissed follow-up or development concerns.

Causes

Many causes.

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

  • Twins
  • Past preterm birth

Possible complications

Diagnosis

The NICU team monitors your baby.

Tests

Tests, if needed:

  • Eye exam: For ROP.
  • Hearing test:

Treatment

At home.

Self-care

  • Follow the feeding plan
  • Back to sleep, firm flat surface
  • Keep sick people away
  • Ask about RSV protection

Which doctor treats this

  • Start with your child's pediatrician.

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

Most preemies grow up healthy.

Getting ready for your visit

Bring a list of your symptoms and medicines.

Questions to ask

  • What is my baby's corrected age?

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 Premature baby (born early)

Sources

Last updated 2026-11-12.