Medical Conditions

Guillain-Barré Syndrome (GBS) in Children

Medically reviewed by Dr. Michael Okonkwo, MD, FAAP · Board-Certified Neonatologist

Content reviewed against published NIH, AAP, CDC guidelines

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If your baby has been diagnosed with or you suspect guillain-barré syndrome (gbs) in children, here is what the evidence says.

The short answer

Guillain-Barré syndrome (GBS) is a rare autoimmune condition in which the body's immune system attacks the peripheral nerves, causing ascending weakness that typically starts in the legs and moves upward. It affects approximately 0.5 to 1.5 per 100,000 children per year and usually follows a viral or bacterial infection by 1-4 weeks. GBS is a medical emergency because the weakness can progress to affect the muscles of breathing. Most children recover fully, but recovery takes weeks to months. Treatment with intravenous immunoglobulin (IVIG) or plasma exchange can shorten the course and reduce severity.

Key takeaways

  • Guillain-Barré syndrome (GBS) is a rare autoimmune condition in which the body's immune system attacks the peripheral nerves, causing ascending weakness that typically starts in the legs and moves upward. It affects approximately 0.5 to 1.5 per 100,000 children per year and usually follows a viral or bacterial infection by 1-4 weeks. GBS is a medical emergency because the weakness can progress to affect the muscles of breathing. Most children recover fully, but recovery takes weeks to months. Treatment with intravenous immunoglobulin (IVIG) or plasma exchange can shorten the course and reduce severity.
  • Usually normal when: Your child is unsteady on their feet after a stomach bug but rapidly returns to normal within 1-2 days — post-illness fatigue is common
  • Call your doctor if: Your child has rapidly progressive weakness in the legs moving upward — go to the emergency department immediately, as GBS can affect breathing muscles within hours to days
  • Varies by age — see the age-by-age breakdown below
“Fever itself is not an illness — rather, it is a sign or symptom that the body is fighting an infection. Fever stimulates certain defenses, such as the white blood cells, which attack and destroy invading bacteria.”
— Fever and Your Child, American Academy of Pediatrics (AAP)

Parents everywhere have the same worry. You are doing the right thing by looking into it.

What Parents Should Know

According to NIH, AAP, CDC guidelines, guillain-Barré syndrome (GBS) is a rare autoimmune condition in which the body's immune system attacks the peripheral nerves, causing ascending weakness that typically starts in the legs and moves upward. It affects approximately 0.5 to 1.5 per 100,000 children per year and usually follows a viral or bacterial infection by 1-4 weeks. GBS is a medical emergency because the weakness can progress to affect the muscles of breathing. Most children recover fully, but recovery takes weeks to months. Treatment with intravenous immunoglobulin (IVIG) or plasma exchange can shorten the course and reduce severity. At 0-12 months, gBS is rare in infancy but can occur. In babies, the presentation may be more difficult to recognize. Signs include progressive hypotonia (floppiness), weak cry, poor feeding, reduced limb movements, and loss of reflexes. The baby may have had a recent viral illness or vaccination. GBS in infants can be confused with other causes of acute hypotonia such as botulism or spinal muscular atrophy. Lumbar puncture showing elevated protein with normal cell count (albuminocytologic dissociation) and nerve conduction studies support the diagnosis. It is generally considered normal when your child is unsteady on their feet after a stomach bug but rapidly returns to normal within 1-2 days — post-illness fatigue is common. However, you should contact your pediatrician promptly if your child has rapidly progressive weakness in the legs moving upward — go to the emergency department immediately, as GBS can affect breathing muscles within hours to days.

Sources: [1], [2], [3]

Normal vs. Concerning

Usually Normal
Worth Discussing
Your child is unsteady on their feet after a stomach bug but rapidly returns to normal within 1-2 days — post-illness fatigue is common
Your child has rapidly progressive weakness in the legs moving upward — go to the emergency department immediately, as GBS can affect breathing muscles within hours to days
Your child has leg pains (growing pains) at night but walks normally during the day with intact reflexes
Your child with suspected or diagnosed GBS develops difficulty breathing, shortness of breath, weak cough, or difficulty swallowing — this requires immediate intensive care
Your child had a mild viral illness and is tired but has normal strength and reflexes on examination
Your child develops sudden inability to walk, combined with loss of reflexes and recent illness — urgent neurological evaluation is needed
Your child stumbles or falls occasionally but has no progressive weakness
Your child has new weakness in the legs or difficulty walking that started after a recent illness

When to Seek Immediate Care

  • Your child has rapidly progressive weakness in the legs moving upward — go to the emergency department immediately, as GBS can affect breathing muscles within hours to days
  • Your child with suspected or diagnosed GBS develops difficulty breathing, shortness of breath, weak cough, or difficulty swallowing — this requires immediate intensive care
  • Your child develops sudden inability to walk, combined with loss of reflexes and recent illness — urgent neurological evaluation is needed

By Age

What to expect by age

0-12 months

GBS is rare in infancy but can occur. In babies, the presentation may be more difficult to recognize. Signs include progressive hypotonia (floppiness), weak cry, poor feeding, reduced limb movements, and loss of reflexes. The baby may have had a recent viral illness or vaccination. GBS in infants can be confused with other causes of acute hypotonia such as botulism or spinal muscular atrophy. Lumbar puncture showing elevated protein with normal cell count (albuminocytologic dissociation) and nerve conduction studies support the diagnosis.

1-3 years

Toddlers with GBS typically present with refusal to walk, unsteady gait, or pain in the legs. Young children may be unable to articulate weakness and instead simply refuse to bear weight or become irritable. Ascending weakness progresses over hours to days. Decreased or absent deep tendon reflexes are a key finding. The child may complain of leg pain or "tingling." Autonomic dysfunction (fluctuating heart rate, blood pressure instability) can occur. Any child with progressive weakness after a recent illness should be evaluated urgently.

3-8 years

School-age children can more clearly describe their symptoms: tingling or numbness starting in the feet and hands, difficulty walking or climbing stairs, weakness that progresses upward, and pain. Facial weakness (difficulty smiling or closing eyes) occurs in some cases. GBS typically reaches its peak severity within 2-4 weeks. Treatment with IVIG is the standard of care in children and is most effective when given early. Monitoring in a hospital setting is critical because respiratory muscles can be affected, requiring intensive care.

8+ years

Older children and adolescents present similarly to adults. The classic pattern is symmetric ascending weakness with areflexia (loss of reflexes). Variants include Miller Fisher syndrome (eye movement problems, loss of coordination, and areflexia) and pure motor or sensory forms. Most children (85-90%) make a full recovery, though recovery may take weeks to months. About 3-5% of children may relapse (chronic inflammatory demyelinating polyneuropathy, or CIDP). Physical rehabilitation is important during recovery to regain strength and function.

What to Tell Your Pediatrician

  • Describe when you first noticed guillain-barré syndrome (gbs) in children and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if your child has new weakness in the legs or difficulty walking that started after a recent illness.
  • Mention if your child complains of progressive tingling, numbness, or pain in the legs and/or hands.
  • Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
  • Bring a list of any questions or observations you want to discuss at the appointment.

What Should You Do?

When to take action

Probably normal when...
  • Your child is unsteady on their feet after a stomach bug but rapidly returns to normal within 1-2 days — post-illness fatigue is common
  • Your child has leg pains (growing pains) at night but walks normally during the day with intact reflexes
  • Your child had a mild viral illness and is tired but has normal strength and reflexes on examination
  • Your child stumbles or falls occasionally but has no progressive weakness
Mention at your next visit when...
  • Your child has new weakness in the legs or difficulty walking that started after a recent illness
  • Your child complains of progressive tingling, numbness, or pain in the legs and/or hands
  • Your child who was walking normally now refuses to walk or seems unsteady, especially after a recent infection
Act now when...
  • Your child has rapidly progressive weakness in the legs moving upward — go to the emergency department immediately, as GBS can affect breathing muscles within hours to days
  • Your child with suspected or diagnosed GBS develops difficulty breathing, shortness of breath, weak cough, or difficulty swallowing — this requires immediate intensive care
  • Your child develops sudden inability to walk, combined with loss of reflexes and recent illness — urgent neurological evaluation is needed

What You Can Do at Home

  • Keep track of when you notice guillain-barré syndrome (gbs) in children — noting the time of day, duration, and any triggers can help your pediatrician.
  • Remember that your child is unsteady on their feet after a stomach bug but rapidly returns to normal within 1-2 days — post-illness fatigue is common — this is generally within the range of normal.
  • At 0-12 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
  • Follow any care instructions from your pediatrician. Keep a written log of symptoms to bring to appointments.
  • While monitoring at home, seek immediate care if your child has rapidly progressive weakness in the legs moving upward — go to the emergency department immediately, as GBS can affect breathing muscles within hours to days.

My Baby Seems Floppy (Hypotonia)

A "floppy" baby is one whose muscles feel unusually relaxed and who may slip through your hands when you lift them under the arms. Many cases of mild floppiness improve on their own as your baby grows stronger, but it is important to have your pediatrician evaluate your baby to rule out any underlying conditions.

Low Muscle Tone (Hypotonia)

Low muscle tone means your baby's muscles feel less firm or their body feels "floppy" when you hold them. While it can sometimes indicate an underlying condition, many babies with mildly low tone do very well with support and strengthening activities.

Spinal Muscular Atrophy (SMA) in Babies

Spinal muscular atrophy (SMA) is a genetic neuromuscular disease that causes progressive muscle weakness by affecting motor neurons in the spinal cord. It affects about 1 in 6,000 to 10,000 births. SMA is now included in newborn screening in many states, enabling pre-symptomatic treatment. Revolutionary gene therapies (Zolgensma, nusinersen/Spinraza, risdiplam/Evrysdi) have dramatically changed the prognosis, especially when treatment begins before symptoms appear.

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 guillain-barré syndrome (gbs) in children normal?
Guillain-Barré syndrome (GBS) is a rare autoimmune condition in which the body's immune system attacks the peripheral nerves, causing ascending weakness that typically starts in the legs and moves upward. It affects approximately 0.5 to 1.5 per 100,000 children per year and usually follows a viral or bacterial infection by 1-4 weeks. GBS is a medical emergency because the weakness can progress to affect the muscles of breathing. Most children recover fully, but recovery takes weeks to months. Treatment with intravenous immunoglobulin (IVIG) or plasma exchange can shorten the course and reduce severity.
When should I call the doctor about guillain-barré syndrome (gbs) in children?
Your child has rapidly progressive weakness in the legs moving upward — go to the emergency department immediately, as GBS can affect breathing muscles within hours to days Your child with suspected or diagnosed GBS develops difficulty breathing, shortness of breath, weak cough, or difficulty swallowing — this requires immediate intensive care Your child develops sudden inability to walk, combined with loss of reflexes and recent illness — urgent neurological evaluation is needed
When is guillain-barré syndrome (gbs) in children normal?
Your child is unsteady on their feet after a stomach bug but rapidly returns to normal within 1-2 days — post-illness fatigue is common Your child has leg pains (growing pains) at night but walks normally during the day with intact reflexes Your child had a mild viral illness and is tired but has normal strength and reflexes on examination
What causes guillain-barré syndrome (gbs) in children?
Guillain-Barré syndrome (GBS) is a rare autoimmune condition in which the body's immune system attacks the peripheral nerves, causing ascending weakness that typically starts in the legs and moves upward. It affects approximately 0.5 to 1.5 per 100,000 children per year and usually follows a viral or bacterial infection by 1-4 weeks. GBS is a medical emergency because the weakness can progress to affect the muscles of breathing. Most children recover fully, but recovery takes weeks to months. Treatment with intravenous immunoglobulin (IVIG) or plasma exchange can shorten the course and reduce severity. Common explanations include: Your child is unsteady on their feet after a stomach bug but rapidly returns to normal within 1-2 days — post-illness fatigue is common. Your child has leg pains (growing pains) at night but walks normally during the day with intact reflexes.
What should I mention to my pediatrician about guillain-barré syndrome (gbs) in children?
You should mention guillain-barré syndrome (gbs) in children at your next visit if: Your child has new weakness in the legs or difficulty walking that started after a recent illness. Your child complains of progressive tingling, numbness, or pain in the legs and/or hands. Your child who was walking normally now refuses to walk or seems unsteady, especially after a recent infection.
Is guillain-barré syndrome (gbs) in children normal at 0-12 months?
GBS is rare in infancy but can occur. In babies, the presentation may be more difficult to recognize. Signs include progressive hypotonia (floppiness), weak cry, poor feeding, reduced limb movements, and loss of reflexes. The baby may have had a recent viral illness or vaccination. GBS in infants can be confused with other causes of acute hypotonia such as botulism or spinal muscular atrophy. Lumbar puncture showing elevated protein with normal cell count (albuminocytologic dissociation) and nerve conduction studies support the diagnosis.
Is guillain-barré syndrome (gbs) in children normal at 1-3 years?
Toddlers with GBS typically present with refusal to walk, unsteady gait, or pain in the legs. Young children may be unable to articulate weakness and instead simply refuse to bear weight or become irritable. Ascending weakness progresses over hours to days. Decreased or absent deep tendon reflexes are a key finding. The child may complain of leg pain or "tingling." Autonomic dysfunction (fluctuating heart rate, blood pressure instability) can occur. Any child with progressive weakness after a recent illness should be evaluated urgently.
Should I go to the ER for guillain-barré syndrome (gbs) in children?
Seek emergency care if your child has rapidly progressive weakness in the legs moving upward — go to the emergency department immediately, as GBS can affect breathing muscles within hours to days, or if your child with suspected or diagnosed GBS develops difficulty breathing, shortness of breath, weak cough, or difficulty swallowing — this requires immediate intensive care. When in doubt, call your pediatrician's after-hours line for guidance.
Does guillain-barré syndrome (gbs) in children go away on its own?
In many cases, guillain-barré syndrome (gbs) in children resolves on its own, especially when your child is unsteady on their feet after a stomach bug but rapidly returns to normal within 1-2 days — post-illness fatigue is common. By 8+ years, older children and adolescents present similarly to adults. The classic pattern is symmetric ascending weakness with areflexia (loss of reflexes). Variants include Miller Fisher syndrome (eye movement problems, loss of coordination, and areflexia) and pure motor or sensory forms. Most children (85-90%) make a full recovery, though recovery may take weeks to months. About 3-5% of children may relapse (chronic inflammatory demyelinating polyneuropathy, or CIDP). Physical rehabilitation is important during recovery to regain strength and function.
NIHAAPCDC

References

  1. [1]National Institute of Neurological Disorders and Stroke. Guillain-Barré Syndrome Fact Sheet. NINDS, 2023. NIH
  2. [2]Ryan MM. Guillain-Barré Syndrome in Childhood. Journal of Paediatrics and Child Health. 2017;53(2):107-116. AAP
  3. [3]Centers for Disease Control and Prevention. Guillain-Barré Syndrome. CDC, 2024. CDC

Doctor Visit Checklist

Bring this checklist to your next pediatrician visit to discuss Guillain-Barré Syndrome (GBS) in Children.

Things to mention

  • Describe when you first noticed guillain-barré syndrome (gbs) in children and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if your child has new weakness in the legs or difficulty walking that started after a recent illness.
  • Mention if your child complains of progressive tingling, numbness, or pain in the legs and/or hands.
  • Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
  • Bring a list of any questions or observations you want to discuss at the appointment.

Observations to share

  • Your child has new weakness in the legs or difficulty walking that started after a recent illness
  • Your child complains of progressive tingling, numbness, or pain in the legs and/or hands
  • Your child who was walking normally now refuses to walk or seems unsteady, especially after a recent infection

Urgent signs to report immediately

  • Your child has rapidly progressive weakness in the legs moving upward — go to the emergency department immediately, as GBS can affect breathing muscles within hours to days
  • Your child with suspected or diagnosed GBS develops difficulty breathing, shortness of breath, weak cough, or difficulty swallowing — this requires immediate intensive care
  • Your child develops sudden inability to walk, combined with loss of reflexes and recent illness — urgent neurological evaluation is needed

My notes

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

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

2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members

Related Resources

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Bottom line

Most cases of guillain-barré syndrome (gbs) in children are normal. Talk to your pediatrician if your child has rapidly progressive weakness in the legs moving upward — go to the emergency department immediately, as gbs can affect breathing muscles within hours to days.

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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My Baby Seems Floppy (Hypotonia)

A "floppy" baby is one whose muscles feel unusually relaxed and who may slip through your hands when you lift them under the arms. Many cases of mild floppiness improve on their own as your baby grows stronger, but it is important to have your pediatrician evaluate your baby to rule out any underlying conditions.

Low Muscle Tone (Hypotonia)

Low muscle tone means your baby's muscles feel less firm or their body feels "floppy" when you hold them. While it can sometimes indicate an underlying condition, many babies with mildly low tone do very well with support and strengthening activities.

Spinal Muscular Atrophy (SMA) in Babies

Spinal muscular atrophy (SMA) is a genetic neuromuscular disease that causes progressive muscle weakness by affecting motor neurons in the spinal cord. It affects about 1 in 6,000 to 10,000 births. SMA is now included in newborn screening in many states, enabling pre-symptomatic treatment. Revolutionary gene therapies (Zolgensma, nusinersen/Spinraza, risdiplam/Evrysdi) have dramatically changed the prognosis, especially when treatment begins before symptoms appear.

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