Medical Conditions

Turner Syndrome Signs in Babies

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If your baby has been diagnosed with or you suspect turner syndrome signs in babies, here is what the evidence says.

The short answer

Turner syndrome is a chromosomal condition that affects only girls, occurring when one X chromosome is missing or partially missing. It affects about 1 in 2,500 female births. Signs at birth may include swollen hands and feet (lymphedema), a wide or webbed neck, and heart defects. With appropriate medical care including growth hormone therapy and hormone replacement, girls with Turner syndrome can lead healthy, fulfilling lives.

Key takeaways

  • Turner syndrome is a chromosomal condition that affects only girls, occurring when one X chromosome is missing or partially missing. It affects about 1 in 2,500 female births. Signs at birth may include swollen hands and feet (lymphedema), a wide or webbed neck, and heart defects. With appropriate medical care including growth hormone therapy and hormone replacement, girls with Turner syndrome can lead healthy, fulfilling lives.
  • Usually normal when: Your baby girl with Turner syndrome is meeting cognitive and social milestones on time
  • Call your doctor if: Your baby shows signs of heart problems such as difficulty breathing, poor feeding, blue or gray color, or weak pulses in the legs
  • Varies by age — see the age-by-age breakdown below
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By Age

What to expect by age

0-3 months

Turner syndrome may be diagnosed prenatally or at birth. Newborn signs can include puffy or swollen hands and feet (lymphedema), a broad chest with widely spaced nipples, a short or webbed neck, low hairline at the back of the neck, and low birth weight. About 30% of girls have a heart defect, most commonly coarctation of the aorta or bicuspid aortic valve, requiring cardiac evaluation. An initial comprehensive workup is important.

3-6 months

The lymphedema (swelling) in the hands and feet often improves over time. Feeding difficulties may occur due to a high-arched palate or mild jaw abnormalities. Hearing should be evaluated, as ear infections and hearing problems are more common. Developmental milestones are usually on track, though some babies may have mild motor delays related to hypotonia.

6-12 months

Most babies with Turner syndrome develop normally intellectually and meet cognitive milestones. Growth may begin to slow compared to peers. Regular monitoring of kidney function (renal ultrasound), hearing, and thyroid levels becomes part of routine care. Early intervention services can help if any developmental delays are identified.

12 months+

Growth hormone therapy is often started in early childhood to help maximize height. Girls with Turner syndrome typically have normal intelligence, though some may have difficulty with spatial reasoning or math. Social development is usually typical. Ongoing cardiac monitoring, hearing checks, thyroid screening, and later estrogen replacement therapy at the age of puberty are standard parts of care.

What Should You Do?

When to take action

Probably normal when...
  • Your baby girl with Turner syndrome is meeting cognitive and social milestones on time
  • The lymphedema (swelling) in your baby's hands and feet is gradually improving
  • Your baby is feeding well and gaining weight, even if growth velocity is on the lower side
  • Your baby's cardiac evaluation came back normal or a mild finding is being monitored
Mention at your next visit when...
  • Your baby girl has puffy hands and feet at birth combined with a broad or webbed neck
  • Your baby girl's growth is consistently falling below her growth curve
  • Your baby has frequent ear infections or you have concerns about hearing
Act now when...
  • Your baby shows signs of heart problems such as difficulty breathing, poor feeding, blue or gray color, or weak pulses in the legs
  • Your baby has sudden severe swelling, high blood pressure, or signs of cardiac distress

Doctor Visit Checklist

Bring this checklist to your next pediatrician visit to discuss Turner Syndrome Signs in Babies.

Things to mention

  • Your baby girl has puffy hands and feet at birth combined with a broad or webbed neck
  • Your baby girl's growth is consistently falling below her growth curve
  • Your baby has frequent ear infections or you have concerns about hearing

Observations to share

  • Your baby girl has puffy hands and feet at birth combined with a broad or webbed neck
  • Your baby girl's growth is consistently falling below her growth curve
  • Your baby has frequent ear infections or you have concerns about hearing

Urgent signs to report immediately

  • Your baby shows signs of heart problems such as difficulty breathing, poor feeding, blue or gray color, or weak pulses in the legs
  • Your baby has sudden severe swelling, high blood pressure, or signs of cardiac distress

My notes

From ismybabyalright.com — free, evidence-based baby health guides

Milestone

Month-by-Month Development

Detailed monthly development guides from birth through 24 months.

Guide

When to Call the Doctor

General guide on when to call the pediatrician, visit urgent care, or go to the ER.

Frequently asked questions

Is turner syndrome signs in babies normal?
Turner syndrome is a chromosomal condition that affects only girls, occurring when one X chromosome is missing or partially missing. It affects about 1 in 2,500 female births. Signs at birth may include swollen hands and feet (lymphedema), a wide or webbed neck, and heart defects. With appropriate medical care including growth hormone therapy and hormone replacement, girls with Turner syndrome can lead healthy, fulfilling lives.
When should I call the doctor about turner syndrome signs in babies?
Your baby shows signs of heart problems such as difficulty breathing, poor feeding, blue or gray color, or weak pulses in the legs Your baby has sudden severe swelling, high blood pressure, or signs of cardiac distress
When is turner syndrome signs in babies normal?
Your baby girl with Turner syndrome is meeting cognitive and social milestones on time The lymphedema (swelling) in your baby's hands and feet is gradually improving Your baby is feeding well and gaining weight, even if growth velocity is on the lower side
What causes turner syndrome signs in babies?
Turner syndrome is a chromosomal condition that affects only girls, occurring when one X chromosome is missing or partially missing. It affects about 1 in 2,500 female births. Signs at birth may include swollen hands and feet (lymphedema), a wide or webbed neck, and heart defects. With appropriate medical care including growth hormone therapy and hormone replacement, girls with Turner syndrome can lead healthy, fulfilling lives. Common explanations include: Your baby girl with Turner syndrome is meeting cognitive and social milestones on time. The lymphedema (swelling) in your baby's hands and feet is gradually improving.
What should I mention to my pediatrician about turner syndrome signs in babies?
You should mention turner syndrome signs in babies at your next visit if: Your baby girl has puffy hands and feet at birth combined with a broad or webbed neck. Your baby girl's growth is consistently falling below her growth curve. Your baby has frequent ear infections or you have concerns about hearing.
Is turner syndrome signs in babies normal at 0-3 months?
Turner syndrome may be diagnosed prenatally or at birth. Newborn signs can include puffy or swollen hands and feet (lymphedema), a broad chest with widely spaced nipples, a short or webbed neck, low hairline at the back of the neck, and low birth weight. About 30% of girls have a heart defect, most commonly coarctation of the aorta or bicuspid aortic valve, requiring cardiac evaluation. An initial comprehensive workup is important.
Is turner syndrome signs in babies normal at 3-6 months?
The lymphedema (swelling) in the hands and feet often improves over time. Feeding difficulties may occur due to a high-arched palate or mild jaw abnormalities. Hearing should be evaluated, as ear infections and hearing problems are more common. Developmental milestones are usually on track, though some babies may have mild motor delays related to hypotonia.
Should I go to the ER for turner syndrome signs in babies?
Seek emergency care if your baby shows signs of heart problems such as difficulty breathing, poor feeding, blue or gray color, or weak pulses in the legs, or if your baby has sudden severe swelling, high blood pressure, or signs of cardiac distress. When in doubt, call your pediatrician's after-hours line for guidance.
Does turner syndrome signs in babies go away on its own?
In many cases, turner syndrome signs in babies resolves on its own, especially when your baby girl with Turner syndrome is meeting cognitive and social milestones on time. By 12 months+, growth hormone therapy is often started in early childhood to help maximize height. Girls with Turner syndrome typically have normal intelligence, though some may have difficulty with spatial reasoning or math. Social development is usually typical. Ongoing cardiac monitoring, hearing checks, thyroid screening, and later estrogen replacement therapy at the age of puberty are standard parts of care.
NIHMAYO CLINIC

References

  1. [1]National Library of Medicine. Turner Syndrome. MedlinePlus Genetics, 2023. NIH
  2. [2]Mayo Clinic. Turner Syndrome — Symptoms and Causes. Mayo Foundation for Medical Education and Research, 2023. Mayo Clinic

All content follows our editorial policy and is reviewed against published clinical guidelines.

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Related Resources

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Bottom line

Most cases of turner syndrome signs in babies are normal. Talk to your pediatrician if your baby shows signs of heart problems such as difficulty breathing, poor feeding, blue or gray color, or weak pulses in the legs.

Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.

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