What is a Neural Tube Defect?
Neural tube defects (NTDs) are birth defects that affect a baby’s brain, spine, or spinal cord. These problems develop very early in pregnancy, usually within the first 3–4 weeks, often before a woman even knows she is pregnant.
During early pregnancy, a structure called the neural tube forms in the developing baby. This tube later becomes the brain and spinal cord. If the neural tube does not close completely, it leads to a neural tube defect.
The most common neural tube defects are:
- Spina bifida
- Anencephaly
How do neural tube defects develop?
In the first month of pregnancy, the two sides of the baby’s spine normally come together and close, protecting the spinal cord and nerves. At this stage, the developing brain and spine are called the neural tube.
As pregnancy continues:
- The upper part of the neural tube becomes the brain
- The lower part becomes the spinal cord
A neural tube defect occurs when this tube fails to close properly at any point.
What are the types of neural tube defects (NTDs)?
There are several types of neural tube defects, including:
- Spina bifida
- Anencephaly
- Encephalocele
- Iniencephaly
Spina bifida
Spina bifida is the most common neural tube defect. It happens when the neural tube does not close fully along the spine.
Types of spina bifida include:
Myelomeningocele (open spina bifida)
This is the most severe and most common type. A fluid-filled sac sticks out from the baby’s back. The sac contains part of the spinal cord, nerves, and spinal fluid. This can cause nerve damage, weakness, or paralysis.Meningocele
In this type, a sac filled with fluid comes out through an opening in the back, but the spinal cord is not damaged. Symptoms are usually milder.
Spina bifida occulta
This is the mildest form. There is a small gap in the spine, but no sac or opening. Most babies have no symptoms and may never know they have it.
Anencephaly
Anencephaly occurs when the top part of the neural tube does not close. As a result, major parts of the brain, skull, and scalp do not develop properly.
Babies with anencephaly are usually stillborn or survive only a few hours or days after birth.
Encephalocele
Encephalocele happens when the neural tube does not close properly near the brain, creating an opening in the skull. Brain tissue and its covering membranes may push out through this opening, forming a visible sac.
In some cases, the opening is small and located near the nose or forehead and may not be easily seen.
Iniencephaly
Iniencephaly is a very rare and severe neural tube defect. The spine is badly misshapen, and the baby’s head is bent backward. The neck is usually missing, and the skin of the face may connect to the chest.
Babies with iniencephaly are usually stillborn.
Who do neural tube defects affect?
Neural tube defects affect unborn babies. They develop during the first month of pregnancy, which is why early prenatal care is very important.
How common are neural tube defects?
Neural tube defects occur in thousands of pregnancies each year.
- Spina bifida is the most common
- Anencephaly is the second most common
- Encephalocele and iniencephaly are rare
What causes neural tube defects?
The exact cause is not fully known. Experts believe neural tube defects happen due to a combination of factors, including:
- Genetics
- Poor nutrition
- Environmental factors
A major risk factor is low folic acid levels before and during early pregnancy. Folic acid is essential for healthy brain and spine development.
What are the symptoms of neural tube defects?
Symptoms vary depending on the type and severity.
Some babies may have no symptoms, while others may have serious complications.
Common problems can include:
- Weakness or paralysis
- Problems with bladder or bowel control
- Vision or hearing loss
- Learning or intellectual disabilities
- In severe cases, loss of consciousness or death
Babies with anencephaly or iniencephaly usually do not survive.
Are there signs during pregnancy?
Pregnant women usually do not have any symptoms themselves.
Neural tube defects are often detected during routine pregnancy ultrasounds, where doctors check the baby’s spine and head development.
How are neural tube defects diagnosed?
Most neural tube defects are diagnosed during pregnancy through prenatal tests.
Tests used to diagnose NTDs include:
Blood test (AFP test)
Done around 16–18 weeks of pregnancy. High levels of alpha-fetoprotein (AFP) may suggest a neural tube defect.
Prenatal ultrasound
This is the most accurate test and is usually done in the first and second trimester.
Amniocentesis
A small sample of fluid is taken from around the baby to check for birth defects. This test carries some risk and is done only when necessary.
After birth, imaging tests like MRI or CT scans may also be used.
How are neural tube defects treated?
Treatment depends on the type and severity.
- Anencephaly and iniencephaly have no treatment
- Spina bifida and encephalocele may be treated with surgery
Treatment for spina bifida and encephalocele
- Surgery may be done before birth or after birth
- Encephalocele is usually treated by placing the brain tissue back into the skull and closing the opening
- Myelomeningocele often requires early surgery to close the spinal opening
Long-term care may include:
- Multiple surgeries
- Physical therapy
- Shunt placement for excess brain fluid (hydrocephalus)
Can a baby live with a neural tube defect?
Yes, babies with spina bifida or encephalocele can live, although they may need long-term medical care.
Babies with anencephaly or iniencephaly usually do not survive.
What is the long-term outlook?
Some children with spina bifida have mild or no complications, while others may have permanent nerve damage.
Early treatment and ongoing care can improve quality of life and prevent further complications.
What increases the risk of neural tube defects?
Risk factors include:
- Low folic acid intake
- Family history of NTDs
- Certain seizure medications
- Poorly controlled diabetes
- Obesity before pregnancy
- High fever or overheating early in pregnancy
- Opioid use in early pregnancy
Taking folic acid daily before and during early pregnancy greatly reduces the risk.
How can I care for my baby?
Every child with a neural tube defect is different. It’s not possible to predict exactly how your baby will be affected.
The best approach is:
- Work with specialists
- Follow a long-term care plan
- Seek emotional and medical support
- Advocate for your child’s needs
With the right care, many children with neural tube defects can live meaningful lives.
Why choose Tender Palm Super-Speciality Hospital for Neural tube defects (NTDs) treatment for children in Lucknow, India?
Tender Palm Super-Speciality Hospital offers advanced Neural tube defects (NTDs) treatment for children in Lucknow, India, at an affordable cost. We have a team of experienced pediatric neurosurgeons and spinal specialists who provide accurate diagnosis with advanced imaging, personalized medical care, and specialized surgical treatment tailored to each child's specific condition. Our Pediatric Neurosurgery team has decades of experience in successfully treating Neural tube defects (NTDs) in Lucknow, India.
To seek an Expert Consultation for Neural tube defects (NTDs) treatment for children in Lucknow, India:
Call us at +91-9076972161
Email at care@tenderpalm.com
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