Medical Conditions

Tuberous Sclerosis Complex (TSC) in Babies

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

Content reviewed against published NIH, AAP, TSC Alliance guidelines

Editorial policy

Last reviewed:

If your baby has been diagnosed with or you suspect tuberous sclerosis complex (tsc) in babies, here is what the evidence says.

The short answer

Tuberous sclerosis complex (TSC) is a genetic condition that causes noncancerous tumors to grow in the brain, kidneys, heart, lungs, eyes, and skin. It affects approximately 1 in 6,000 births. One of the earliest signs in babies is white skin patches (hypomelanotic macules or "ash-leaf spots"), which may be visible at birth. TSC is a leading cause of infantile spasms and epilepsy in infants. Early diagnosis allows for proactive seizure monitoring and treatment, significantly improving developmental outcomes.

Key takeaways

  • Tuberous sclerosis complex (TSC) is a genetic condition that causes noncancerous tumors to grow in the brain, kidneys, heart, lungs, eyes, and skin. It affects approximately 1 in 6,000 births. One of the earliest signs in babies is white skin patches (hypomelanotic macules or "ash-leaf spots"), which may be visible at birth. TSC is a leading cause of infantile spasms and epilepsy in infants. Early diagnosis allows for proactive seizure monitoring and treatment, significantly improving developmental outcomes.
  • Usually normal when: Your baby has one or two small white or pale patches on the skin that have been evaluated and are not associated with other TSC findings
  • Call your doctor if: Your baby develops clusters of sudden jerking or stiffening movements (possible infantile spasms) — record a video and seek same-day evaluation, as early treatment with vigabatrin is critical in TSC
  • Varies by age — see the age-by-age breakdown below
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What Parents Should Know

According to NIH, AAP, TSC Alliance guidelines, tuberous sclerosis complex (TSC) is a genetic condition that causes noncancerous tumors to grow in the brain, kidneys, heart, lungs, eyes, and skin. It affects approximately 1 in 6,000 births. One of the earliest signs in babies is white skin patches (hypomelanotic macules or "ash-leaf spots"), which may be visible at birth. TSC is a leading cause of infantile spasms and epilepsy in infants. Early diagnosis allows for proactive seizure monitoring and treatment, significantly improving developmental outcomes. At 0-3 months, tSC may be suspected prenatally if cardiac rhabdomyomas (benign heart tumors) are detected on fetal ultrasound — these are found in about 60% of babies with TSC and often shrink on their own. After birth, the most visible early sign is hypomelanotic macules — pale or white patches on the skin that are best seen under a Wood's lamp (ultraviolet light). These "ash-leaf" shaped spots can be subtle in fair-skinned babies. Some babies are diagnosed after brain imaging shows cortical tubers or subependymal nodules. Genetic testing for TSC1 or TSC2 gene mutations can confirm the diagnosis. It is generally considered normal when your baby has one or two small white or pale patches on the skin that have been evaluated and are not associated with other TSC findings. However, you should contact your pediatrician promptly if your baby develops clusters of sudden jerking or stiffening movements (possible infantile spasms) — record a video and seek same-day evaluation, as early treatment with vigabatrin is critical in TSC.

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

Normal vs. Concerning

Usually Normal
Worth Discussing
Your baby has one or two small white or pale patches on the skin that have been evaluated and are not associated with other TSC findings
Your baby develops clusters of sudden jerking or stiffening movements (possible infantile spasms) — record a video and seek same-day evaluation, as early treatment with vigabatrin is critical in TSC
Your baby had cardiac rhabdomyomas prenatally that are shrinking and genetic testing is negative for TSC mutations
Your baby with known TSC develops signs of increased intracranial pressure: vomiting, bulging fontanelle, excessive sleepiness, or sudden vision changes — this may indicate a growing SEGA obstructing brain fluid flow
Your baby has been diagnosed with TSC, is seizure-free, and is meeting developmental milestones with appropriate monitoring
You notice multiple white or pale patches on your baby's skin, especially if they are oval or leaf-shaped
Your baby has normal skin findings and a family history was evaluated with no TSC features found
Your baby has cardiac rhabdomyomas found on prenatal or postnatal echocardiogram

By Age

What to expect by age

0-3 months

TSC may be suspected prenatally if cardiac rhabdomyomas (benign heart tumors) are detected on fetal ultrasound — these are found in about 60% of babies with TSC and often shrink on their own. After birth, the most visible early sign is hypomelanotic macules — pale or white patches on the skin that are best seen under a Wood's lamp (ultraviolet light). These "ash-leaf" shaped spots can be subtle in fair-skinned babies. Some babies are diagnosed after brain imaging shows cortical tubers or subependymal nodules. Genetic testing for TSC1 or TSC2 gene mutations can confirm the diagnosis.

3-12 months

Infantile spasms develop in about one-third of babies with TSC, typically between 4-8 months. In TSC, vigabatrin is the preferred first-line treatment for infantile spasms and is highly effective. Proactive EEG monitoring in infants with known TSC (before seizures appear) has been shown to improve outcomes by enabling treatment at the very first sign of seizure activity. Brain MRI during this period helps identify cortical tubers and monitor for subependymal giant cell astrocytomas (SEGAs), which are benign but can obstruct fluid flow in the brain.

1-3 years

Other seizure types (focal seizures, generalized seizures) may develop during this period. Developmental progress varies widely — some children with TSC develop normally, while others have intellectual disability or autism spectrum features. Skin findings may become more apparent, including additional hypomelanotic macules and facial angiofibromas (small reddish bumps on the cheeks and nose, typically appearing after age 2). Kidney monitoring with periodic ultrasounds begins in early childhood, as angiomyolipomas (benign kidney tumors) can develop.

3+ years

Long-term management of TSC involves regular monitoring of the brain, kidneys, heart, lungs, skin, and eyes. mTOR inhibitors (everolimus/sirolimus) are FDA-approved for treating SEGAs, kidney angiomyolipomas, and as adjunctive treatment for seizures in TSC. Many children with TSC attend regular school with appropriate support. The TSC Alliance and TSC clinics at major children's hospitals provide comprehensive, coordinated care. Regular developmental and behavioral assessments help identify and address learning, behavioral, and psychiatric needs.

What to Tell Your Pediatrician

  • Describe when you first noticed tuberous sclerosis complex (tsc) in babies and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if you notice multiple white or pale patches on your baby's skin, especially if they are oval or leaf-shaped.
  • Mention if your baby has cardiac rhabdomyomas found on prenatal or postnatal echocardiogram.
  • 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 baby has one or two small white or pale patches on the skin that have been evaluated and are not associated with other TSC findings
  • Your baby had cardiac rhabdomyomas prenatally that are shrinking and genetic testing is negative for TSC mutations
  • Your baby has been diagnosed with TSC, is seizure-free, and is meeting developmental milestones with appropriate monitoring
  • Your baby has normal skin findings and a family history was evaluated with no TSC features found
Mention at your next visit when...
  • You notice multiple white or pale patches on your baby's skin, especially if they are oval or leaf-shaped
  • Your baby has cardiac rhabdomyomas found on prenatal or postnatal echocardiogram
  • You have a family history of tuberous sclerosis and want your baby screened
  • Your baby with known TSC is showing new skin changes or behavioral differences
Act now when...
  • Your baby develops clusters of sudden jerking or stiffening movements (possible infantile spasms) — record a video and seek same-day evaluation, as early treatment with vigabatrin is critical in TSC
  • Your baby with known TSC develops signs of increased intracranial pressure: vomiting, bulging fontanelle, excessive sleepiness, or sudden vision changes — this may indicate a growing SEGA obstructing brain fluid flow

What You Can Do at Home

  • Keep track of when you notice tuberous sclerosis complex (tsc) in babies — noting the time of day, duration, and any triggers can help your pediatrician.
  • Remember that your baby has one or two small white or pale patches on the skin that have been evaluated and are not associated with other TSC findings — this is generally within the range of normal.
  • At 0-3 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 baby develops clusters of sudden jerking or stiffening movements (possible infantile spasms) — record a video and seek same-day evaluation, as early treatment with vigabatrin is critical in TSC.

Infantile Spasms (West Syndrome)

Infantile spasms (West syndrome) are a serious type of epilepsy that typically begins between 3-12 months of age, affecting about 1 in 2,000 to 4,000 babies. Spasms often appear as sudden, brief stiffening or jerking movements that occur in clusters, especially upon waking. Rapid diagnosis and treatment (typically within days) are critical, as early treatment with ACTH or vigabatrin significantly improves developmental outcomes. If you suspect infantile spasms, seek medical evaluation immediately.

Early Signs of Epilepsy in Babies

Seizures in babies can look very different from seizures in older children or adults. Subtle signs may include repeated eye blinking or deviation, lip smacking, cycling leg movements, brief stiffening episodes, or clusters of head drops (infantile spasms). Infantile spasms are a neurological emergency that requires urgent evaluation. Not all unusual movements are seizures - babies commonly have benign tremors and startle reflexes - but any movement pattern that seems involuntary, repetitive, and cannot be interrupted deserves medical evaluation.

Types of Seizures in Babies and What They Look Like

Seizures in babies can look very different from seizures in adults. Types include subtle seizures (eye deviation, lip smacking, bicycling movements), tonic seizures (stiffening), clonic seizures (rhythmic jerking), myoclonic seizures (quick jerks), and infantile spasms (clusters of brief body flexion). Any suspected seizure in a baby needs medical evaluation. Video-recording the episode on your phone is extremely helpful for your doctor to determine if it was truly a seizure.

My Baby Has Light Brown Spots

Café-au-lait spots are flat, light brown birthmarks that are very common and usually harmless. One or two spots are present in about 20-30% of all babies. However, having six or more spots larger than 5mm may be a sign of neurofibromatosis, so your pediatrician will monitor the number and size of spots over time.

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 tuberous sclerosis complex (tsc) in babies normal?
Tuberous sclerosis complex (TSC) is a genetic condition that causes noncancerous tumors to grow in the brain, kidneys, heart, lungs, eyes, and skin. It affects approximately 1 in 6,000 births. One of the earliest signs in babies is white skin patches (hypomelanotic macules or "ash-leaf spots"), which may be visible at birth. TSC is a leading cause of infantile spasms and epilepsy in infants. Early diagnosis allows for proactive seizure monitoring and treatment, significantly improving developmental outcomes.
When should I call the doctor about tuberous sclerosis complex (tsc) in babies?
Your baby develops clusters of sudden jerking or stiffening movements (possible infantile spasms) — record a video and seek same-day evaluation, as early treatment with vigabatrin is critical in TSC Your baby with known TSC develops signs of increased intracranial pressure: vomiting, bulging fontanelle, excessive sleepiness, or sudden vision changes — this may indicate a growing SEGA obstructing brain fluid flow
When is tuberous sclerosis complex (tsc) in babies normal?
Your baby has one or two small white or pale patches on the skin that have been evaluated and are not associated with other TSC findings Your baby had cardiac rhabdomyomas prenatally that are shrinking and genetic testing is negative for TSC mutations Your baby has been diagnosed with TSC, is seizure-free, and is meeting developmental milestones with appropriate monitoring
What causes tuberous sclerosis complex (tsc) in babies?
Tuberous sclerosis complex (TSC) is a genetic condition that causes noncancerous tumors to grow in the brain, kidneys, heart, lungs, eyes, and skin. It affects approximately 1 in 6,000 births. One of the earliest signs in babies is white skin patches (hypomelanotic macules or "ash-leaf spots"), which may be visible at birth. TSC is a leading cause of infantile spasms and epilepsy in infants. Early diagnosis allows for proactive seizure monitoring and treatment, significantly improving developmental outcomes. Common explanations include: Your baby has one or two small white or pale patches on the skin that have been evaluated and are not associated with other TSC findings. Your baby had cardiac rhabdomyomas prenatally that are shrinking and genetic testing is negative for TSC mutations.
What should I mention to my pediatrician about tuberous sclerosis complex (tsc) in babies?
You should mention tuberous sclerosis complex (tsc) in babies at your next visit if: You notice multiple white or pale patches on your baby's skin, especially if they are oval or leaf-shaped. Your baby has cardiac rhabdomyomas found on prenatal or postnatal echocardiogram. You have a family history of tuberous sclerosis and want your baby screened.
Is tuberous sclerosis complex (tsc) in babies normal at 0-3 months?
TSC may be suspected prenatally if cardiac rhabdomyomas (benign heart tumors) are detected on fetal ultrasound — these are found in about 60% of babies with TSC and often shrink on their own. After birth, the most visible early sign is hypomelanotic macules — pale or white patches on the skin that are best seen under a Wood's lamp (ultraviolet light). These "ash-leaf" shaped spots can be subtle in fair-skinned babies. Some babies are diagnosed after brain imaging shows cortical tubers or subependymal nodules. Genetic testing for TSC1 or TSC2 gene mutations can confirm the diagnosis.
Is tuberous sclerosis complex (tsc) in babies normal at 3-12 months?
Infantile spasms develop in about one-third of babies with TSC, typically between 4-8 months. In TSC, vigabatrin is the preferred first-line treatment for infantile spasms and is highly effective. Proactive EEG monitoring in infants with known TSC (before seizures appear) has been shown to improve outcomes by enabling treatment at the very first sign of seizure activity. Brain MRI during this period helps identify cortical tubers and monitor for subependymal giant cell astrocytomas (SEGAs), which are benign but can obstruct fluid flow in the brain.
Should I go to the ER for tuberous sclerosis complex (tsc) in babies?
Seek emergency care if your baby develops clusters of sudden jerking or stiffening movements (possible infantile spasms) — record a video and seek same-day evaluation, as early treatment with vigabatrin is critical in TSC, or if your baby with known TSC develops signs of increased intracranial pressure: vomiting, bulging fontanelle, excessive sleepiness, or sudden vision changes — this may indicate a growing SEGA obstructing brain fluid flow. When in doubt, call your pediatrician's after-hours line for guidance.
Does tuberous sclerosis complex (tsc) in babies go away on its own?
In many cases, tuberous sclerosis complex (tsc) in babies resolves on its own, especially when your baby has one or two small white or pale patches on the skin that have been evaluated and are not associated with other TSC findings. By 3+ years, long-term management of TSC involves regular monitoring of the brain, kidneys, heart, lungs, skin, and eyes. mTOR inhibitors (everolimus/sirolimus) are FDA-approved for treating SEGAs, kidney angiomyolipomas, and as adjunctive treatment for seizures in TSC. Many children with TSC attend regular school with appropriate support. The TSC Alliance and TSC clinics at major children's hospitals provide comprehensive, coordinated care. Regular developmental and behavioral assessments help identify and address learning, behavioral, and psychiatric needs.
NIHAAPTSC ALLIANCE

References

  1. [1]National Institute of Neurological Disorders and Stroke. Tuberous Sclerosis Fact Sheet. NINDS, 2023. NIH
  2. [2]Northrup H, Krueger DA; International Tuberous Sclerosis Complex Consensus Group. Tuberous Sclerosis Complex Diagnostic Criteria Update. Pediatric Neurology. 2013;49(4):243-254. AAP
  3. [3]TSC Alliance. What is Tuberous Sclerosis Complex? TSC Alliance, 2024. TSC Alliance

Doctor Visit Checklist

Bring this checklist to your next pediatrician visit to discuss Tuberous Sclerosis Complex (TSC) in Babies.

Things to mention

  • Describe when you first noticed tuberous sclerosis complex (tsc) in babies and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if you notice multiple white or pale patches on your baby's skin, especially if they are oval or leaf-shaped.
  • Mention if your baby has cardiac rhabdomyomas found on prenatal or postnatal echocardiogram.
  • 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

  • You notice multiple white or pale patches on your baby's skin, especially if they are oval or leaf-shaped
  • Your baby has cardiac rhabdomyomas found on prenatal or postnatal echocardiogram
  • You have a family history of tuberous sclerosis and want your baby screened

Urgent signs to report immediately

  • Your baby develops clusters of sudden jerking or stiffening movements (possible infantile spasms) — record a video and seek same-day evaluation, as early treatment with vigabatrin is critical in TSC
  • Your baby with known TSC develops signs of increased intracranial pressure: vomiting, bulging fontanelle, excessive sleepiness, or sudden vision changes — this may indicate a growing SEGA obstructing brain fluid flow

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 tuberous sclerosis complex (tsc) in babies are normal. Talk to your pediatrician if your baby develops clusters of sudden jerking or stiffening movements (possible infantile spasms) — record a video and seek same-day evaluation, as early treatment with vigabatrin is critical in tsc.

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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Related Medical Concerns

Infantile Spasms (West Syndrome)

Infantile spasms (West syndrome) are a serious type of epilepsy that typically begins between 3-12 months of age, affecting about 1 in 2,000 to 4,000 babies. Spasms often appear as sudden, brief stiffening or jerking movements that occur in clusters, especially upon waking. Rapid diagnosis and treatment (typically within days) are critical, as early treatment with ACTH or vigabatrin significantly improves developmental outcomes. If you suspect infantile spasms, seek medical evaluation immediately.

Early Signs of Epilepsy in Babies

Seizures in babies can look very different from seizures in older children or adults. Subtle signs may include repeated eye blinking or deviation, lip smacking, cycling leg movements, brief stiffening episodes, or clusters of head drops (infantile spasms). Infantile spasms are a neurological emergency that requires urgent evaluation. Not all unusual movements are seizures - babies commonly have benign tremors and startle reflexes - but any movement pattern that seems involuntary, repetitive, and cannot be interrupted deserves medical evaluation.

Types of Seizures in Babies and What They Look Like

Seizures in babies can look very different from seizures in adults. Types include subtle seizures (eye deviation, lip smacking, bicycling movements), tonic seizures (stiffening), clonic seizures (rhythmic jerking), myoclonic seizures (quick jerks), and infantile spasms (clusters of brief body flexion). Any suspected seizure in a baby needs medical evaluation. Video-recording the episode on your phone is extremely helpful for your doctor to determine if it was truly a seizure.

My Baby Has Light Brown Spots

Café-au-lait spots are flat, light brown birthmarks that are very common and usually harmless. One or two spots are present in about 20-30% of all babies. However, having six or more spots larger than 5mm may be a sign of neurofibromatosis, so your pediatrician will monitor the number and size of spots over time.

My Baby's Head Shape Looks Abnormal

Many babies develop temporary head shape irregularities that are completely normal. A cone-shaped head from vaginal delivery reshapes within days. Mild positional flattening (plagiocephaly) from sleeping on the back is very common and usually improves with repositioning and tummy time. However, head shape changes involving ridges, a persistently bulging fontanelle, or rapid head growth changes should be evaluated to rule out craniosynostosis.

Achondroplasia (Dwarfism) in Babies

Achondroplasia is the most common form of short-limbed dwarfism, affecting about 1 in 15,000 to 40,000 births. It is caused by a mutation in the FGFR3 gene and is usually apparent at birth with characteristic features including short limbs, a larger head, and a prominent forehead. Intelligence is normal. With monitoring for specific complications and supportive care, children with achondroplasia lead full, active, and independent lives.