Pediatric Brain Tumor: Symptoms, Causes, and Treatment
Updated: 2 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 17, 2026
Quick Answer
A pediatric brain tumor is a growth of cells that starts in or near a child's brain and presses on nearby areas, causing symptoms like headaches and vision changes [1]. It usually results from DNA changes in brain cells, and the cause is almost always unknown [1]. Children under 5 are most often affected [1]. Treatment includes surgery, radiation and chemotherapy [2].
What the research says
Children are often unwell for months before diagnosis, and delays add harm. A guideline built from a meta-analysis, a cohort study, and Delphi consensus voting among healthcare professionals (156 enrolled, 88 completed all three rounds) produced 76 recommendations to help clinicians identify and image children who may have a brain tumor sooner, noting that a prolonged period between symptom onset and diagnosis is associated with increased morbidity (Wilne et al., Arch Dis Child, 2010). [5]
Proton radiation may protect thinking skills better than standard photon radiation. Pooling 10 studies of 630 children and adolescents, those treated with proton therapy scored higher on most neurocognitive outcomes, including IQ, verbal comprehension, and verbal memory (differences of 0.29 to 0.75 standard-deviation units); larger long-term studies are still needed (Lassaletta et al., World J Pediatr, 2023). [6]
Proton therapy matched photon therapy for control of childhood ependymoma. In a meta-analysis of 15 articles, 5-year overall survival was 84.7% after proton beam therapy versus 73.8% after photon radiotherapy, and the authors concluded that proton outcomes were comparable (Mizumoto et al., Heliyon, 2024). [7]
What Is a Pediatric Brain Tumor?
A pediatric brain tumor is a growth of cells that begins in or near the brain in a child. The growth presses on nearby parts of the brain, which can cause symptoms such as headaches and nausea [1].
There are many types of brain tumors that occur in children. Some grow quickly, and some grow slowly [1]. Some are cancerous, and some are not. Tumors that are not cancerous are called benign [1].
The type of tumor matters most because it determines the best treatment. The tumor's location, whether it has spread beyond the brain, and the child's age and overall health also shape the care plan [1].
One point deserves emphasis: treatment for children is often quite different from treatment for adults [1]. Because of this, families should look for a center experienced in treating children with brain tumors [1].
Doctor discussing pediatric brain tumor warning signs with a child and parent in a pediatric exam room.
Seven Common Types
Seven types of pediatric brain tumor are commonly named, and knowing which one a child has guides diagnosis and treatment decisions.
Tumor type | Notes |
Choroid plexus carcinoma | A cancerous tumor type that occurs in children |
Craniopharyngioma | A brain tumor type found in children |
Embryonal tumors | A group of tumor types that start in early brain cell development |
Ependymoma | A tumor type that grows from cells lining fluid spaces in the brain |
Glioma | A broad group of tumors that grow from glial (support) cells |
Medulloblastoma | A fast-growing tumor type that starts in the lower back of the brain |
Pineoblastoma | A fast-growing tumor type that starts in the pineal gland |
What are pediatric brain tumor symptoms, and when should you seek care?
Symptoms vary depending on the tumor's location, size, and how quickly it is growing [1]. Because the skull cannot expand, even a small growth can raise pressure inside the head and cause noticeable changes.
The most common warning signs involve the head and the eyes. Headaches tend to become more frequent and more severe over time [1]. In babies and toddlers who cannot talk, this may show up as more irritability than usual rather than complaints of head pain. Nausea and vomiting are also common, as are vision changes such as double vision [1]. Young children who cannot describe their vision trouble may squint or cover one eye when they look at things [1].
Babies have one additional visible sign: a fuller soft spot on the skull [1]. The soft spot normally feels flat, and pressure inside the head can make it bulge.
Other symptoms reflect which part of the brain the tumor is pressing on. Trouble with balance, walking, or swallowing points toward the back of the brain. Weakness or numbness in an arm or leg, drooping on one side of the face, or slurred speech suggests pressure on areas that control movement. Confusion, irritability, and memory or personality changes can result from pressure on the brain's thinking centers. Hearing problems may also develop [1].
A first-time seizure deserves particular attention. In a child with no seizure history, a seizure is a strong reason to see a doctor promptly.
Symptom | What it usually means |
Headaches that get more frequent and severe | Rising pressure inside the skull |
Nausea and vomiting | Pressure affecting the brain's nausea centers |
Double vision, squinting, or covering one eye | Pressure on nerves or areas that control eye movement |
Fuller soft spot in babies | Fluid pressure pushing outward on the skull |
Trouble with balance or walking | Pressure on the back of the brain |
Slurred speech or facial drooping on one side | Pressure on areas controlling speech and movement |
Confusion, irritability, or memory problems | Pressure on the brain's thinking centers |
First-time seizure | Abnormal electrical activity, often from a mass pressing on tissue |
Make an appointment with your child's doctor for any of these symptoms if they worry you [1]. You do not need to wait to see whether they get worse.
What causes pediatric brain tumors, and who is at risk?
In most children with a brain tumor, the cause is unknown [1]. No one can say for certain why one child develops a tumor and another does not.
What is known starts at the level of DNA. Healthy cells grow and die at set rates [1]. Tumor cells receive new instructions from DNA changes. They make more cells quickly, and they keep living when healthy cells would die [1]. The extra cells pile up into a mass, which is the tumor, and the mass presses on nearby brain tissue and may cause swelling [1].
Three stages of brain tumor development: healthy cells that grow and die in balance, DNA changes that make cells divide rapidly, and a tumor pressing on brain tissue.
Some tumor cells develop further DNA changes and become cancer cells. Cancer cells can invade and destroy healthy tissue, and they can break away and spread [1]. When brain cancer does spread, it tends to travel through the cerebrospinal fluid, the fluid that surrounds the brain and spinal cord [1].
Risk factor | How it works |
Younger age (under 5) | Brain tumors can happen at any age but occur most often in children under 5 [1] |
Exposure to head radiation | Radiation therapy to the head for one brain tumor can raise the risk of a second tumor of another type [1] |
Weakened immune system | Medicines such as immune-suppressing drugs after an organ transplant, or illnesses such as HIV, raise the risk [1] |
Genetic syndromes | Neurofibromatosis 1, neurofibromatosis 2, tuberous sclerosis, Gorlin syndrome, Turcot syndrome, and Cowden syndrome all run in families [1] |
DNA tests can show whether a child carries one of these genetic syndromes [1]. If a syndrome runs in your family, ask the doctor whether testing makes sense.
It is equally important to state what the medical record does not blame. There is no way to prevent a pediatric brain tumor, and if your child develops one, you did nothing to cause it [1].
How is a pediatric brain tumor diagnosed?
Doctors build the diagnosis step by step, starting with the simplest examinations and moving to imaging and tissue testing.
The first step is usually a neurological exam. The doctor tests vision, hearing, balance, coordination, strength, and reflexes [2]. Trouble in any one area gives a clue about which part of the brain may have a problem, and that clue directs the next tests.
Imaging follows. Magnetic resonance imaging (MRI) is the most common test [2]. Special forms of MRI, such as functional MRI and magnetic resonance spectroscopy, can show more detail about brain function and tissue chemistry [2]. CT scans and PET scans are also options [2].
Test | What it does |
Neurological exam | Tests vision, hearing, balance, coordination, strength, and reflexes to locate the problem area |
MRI | Produces detailed pictures of the brain; special MRI types add function and chemistry detail |
CT scan and PET scan | Provide additional imaging views of the brain [2] |
Biopsy | Removes a tissue sample so the lab can confirm the tumor type and its DNA profile |
Lumbar puncture (spinal tap) | Draws cerebrospinal fluid to check for tumor cells when spread is a concern [2] |
A biopsy supplies the tissue sample that makes the diagnosis certain. The sample is usually collected during the surgery that removes the tumor [2]. If surgery is not possible, doctors can perform a stereotactic needle biopsy: a small hole is drilled in the skull, and a thin needle draws out a cell sample [2].
The lab tests show whether the tumor is cancerous and how fast the cells are growing [2]. DNA analysis of the sample helps the care team choose the right treatment plan [2].
If there is any risk that the tumor has spread, a lumbar puncture is needed [2]. A needle is passed between two bones in the lower back to draw cerebrospinal fluid, which the lab checks for cancer cells [2]. Brain cancer usually does not spread, but when it does, the cerebrospinal fluid is where it tends to go, and the fluid can carry cells to other parts of the brain and the spinal cord [2].
What are the treatment options for pediatric brain tumors?
Treatment depends on the tumor type, its size and location, and the child's age and overall health [2]. The care plan often combines more than one approach.
Surgery
The goal of surgery is to remove all of the tumor cells [2]. This is not always possible. If the tumor sits in a hard-to-reach spot or is close to important brain areas, the surgeon removes as much as is safely possible [2].
Surgery carries risks of infection and bleeding [2]. The exact risks depend on the tumor's location. A tumor near the eye nerves, for example, carries a risk of vision loss [2].
Radiation Therapy
Radiation therapy uses powerful energy beams, such as X-rays or protons, to kill tumor cells [2]. The child lies on a table while a machine moves around and aims at precise points in the brain. The child must stay very still, and young children sometimes need medicine to help them relax and keep still [2].
Two kinds of radiation matter for children. X-ray, or photon, radiation is the most common type and is available at most treatment centers [2]. Proton radiation is newer and not yet available everywhere. It is more carefully targeted, so it is less likely to hurt healthy tissue [2]. Children benefit from this precision because their brains are still developing [2].
Side effects include fatigue, scalp irritation, temporary hair loss, and headaches [2]. Some children also have nausea or vomiting, and anti-nausea medicine can help [2].
Radiosurgery
Radiosurgery, also called stereotactic radiosurgery, is intense radiation aimed from many angles at once. Each individual beam is weak, but where all the beams meet, the tumor cells receive a very large dose and die [2]. It is usually a single treatment session rather than a course of daily sessions [2].
Radiosurgery type | How it works |
LINAC (linear accelerator) | Shaped X-ray beams are delivered one at a time from several angles; known by machine names such as CyberKnife and TrueBeam [2] |
Gamma Knife | Many small gamma-ray beams are aimed at the target at the same time [2] |
Proton radiosurgery | Proton beams are used; more common than before but not available at every hospital [2] |
Side effects include fatigue and changes to the scalp skin, which can become dry, itchy, and sensitive [2]. Some children develop blisters or lose hair, and in a few cases the hair loss is permanent [2].
Chemotherapy
Chemotherapy uses strong medicines to kill tumor cells. It can be given as pills, injected into a vein, or placed directly in the brain tissue during surgery [2]. Side effects depend on which medicines are used, but nausea, vomiting, and temporary hair loss are common [2].
Targeted Therapy
Targeted therapy medicines attack specific chemicals inside tumor cells. Blocking those chemicals causes the tumor cells to die [2]. Targeted therapy is available for certain types of pediatric brain tumors, and the tumor cells may be tested to see whether it could help [2].
Clinical Trials and Palliative Care
Clinical trials are research studies of new treatments. They give children a chance to try the latest options, though the side-effect risks may not yet be fully known [2]. Ask the healthcare team whether a trial fits your child's situation.
Palliative care is a special kind of care that helps children with serious illnesses feel better. A team of doctors, nurses, and specially trained professionals relieves pain and other symptoms and improves quality of life [2]. Importantly, a child can receive palliative care at the same time as surgery, chemotherapy, and radiation [2].
Five treatment options for pediatric brain tumors: surgery to remove the tumor, radiation therapy, radiosurgery with focused beams, chemotherapy, and targeted therapy.
What does rehabilitation after pediatric brain tumor treatment involve?
Brain tumors can develop in parts of the brain that control motor skills, speech, vision, and thinking [2]. Children often need support after treatment to help them recover these abilities.
How can families cope with a pediatric brain tumor at home and hospital?
How a family manages day to day matters as much as the medicines.
At the hospital, bring a favorite toy or book to clinic visits so your child stays occupied while waiting. Stay with your child during tests and treatments when possible, and describe what will happen in words your child will understand. Include playtime in the daily schedule; many hospitals have playrooms for children in treatment. Ask to speak with a social worker or a child life specialist, and look for parent support groups, since parents who have been through treatment before can offer encouragement and practical advice.
At home, monitor your child's energy level. Gently encourage regular activities when your child feels well enough, and allow plenty of rest, especially after chemotherapy or radiation. Keep a daily record of your child's temperature, energy, sleeping patterns, medicines, and side effects, and share it with the care team.
Stick to your child's usual diet unless the team suggests otherwise, prepare favorite foods, and see a registered dietitian to make sure your child gets enough nutrients and calories. Check with the healthcare team before any vaccinations, because cancer treatment affects the immune system [2]. And talk openly with your other children about the tumor, explaining changes such as hair loss and tiredness and listening to their concerns.
Which complementary approaches may help children with brain tumors?
Some families explore treatments that are not usually offered by healthcare professionals. Little research supports these options for pediatric brain tumors, and none has been proved to cure a brain tumor [2]. Some can even be harmful [2].
Doctors increasingly discuss integrative medicine, which brings studied methods into the treatment plan alongside standard care. Approaches that may help a child cope with symptoms and treatment side effects include acupuncture, art and music therapy, hypnosis, massage therapy, meditation, and relaxation techniques such as guided imagery and deep breathing [2]. If your child is interested, talk with the healthcare team and ask for professionals who have experience working with children with brain tumors.
Conclusion: What Parents Should Do First
A pediatric brain tumor is frightening news, but the path forward is clear. Watch for the warning signs: headaches that worsen over time, nausea and vomiting, vision changes, a bulging soft spot in a baby, and any first-time seizure. If symptoms worry you, see your child's doctor. If a tumor is suspected, ask for a referral to a specialist experienced in pediatric brain tumors.
Treatment has become more precise, with radiation targeted to spare a developing brain and therapy matched to the tumor's DNA. Recovery support ranges from physical therapy to tutoring for a child coping with memory changes. And you do not walk this path alone: social workers, child life specialists, and parent support groups all stand ready to help.
Your next step: Bring this guide to your child's appointment and use the question list in your visit. If symptoms are urgent, such as a new seizure, sudden vision changes, or a child who cannot stay awake, seek emergency care right away.
Frequently Asked Questions
What are the early signs of a brain tumor in a child?
Early signs center on the head and eyes. Headaches that become more frequent and more severe, nausea and vomiting, and vision changes such as double vision are most common [1]. In babies, look for a fuller soft spot on the skull and unusual irritability [1]. Any first-time seizure also warrants prompt medical attention.
What causes brain tumors in children?
The cause is usually unknown [1]. In most cases, DNA changes inside brain cells give them new instructions: the cells multiply quickly and keep living when healthy cells would die [1]. The extra cells form a mass that presses on brain tissue. Nothing a parent did caused the tumor [1].
How is a pediatric brain tumor diagnosed?
Doctors start with a neurological exam of vision, hearing, balance, coordination, strength, and reflexes [2]. MRI is the main imaging test, with CT and PET scans as additional options [2]. A biopsy, often during surgery, confirms the tumor type and its DNA profile, and a lumbar puncture checks the cerebrospinal fluid if the tumor might have spread [2].
What are the treatment options for a child?
Treatment is chosen by tumor type, location, and the child's age and health [2]. Options include surgery, radiation therapy (photon or proton), radiosurgery in a single session, chemotherapy, and targeted therapy that attacks specific chemicals in tumor cells [2]. Palliative care and clinical trials can be part of the plan, and rehabilitation helps children regain motor skills, speech, vision, and thinking [2].
Can a pediatric brain tumor be cured?
It depends on the tumor type, its location, and whether it has spread. Some tumors can be removed completely with surgery; others require combinations of treatments. The child's care team is the best source for what treatment can achieve for your child's specific tumor. Asking "Can any treatments cure my child's brain tumor?" is exactly the right question to bring to the appointment.
Additional Resources
For further reading, these authoritative external references support the information above:
National Cancer Institute. Childhood Brain and Spinal Cord Tumors Treatment Overview
American Cancer Society. Brain Tumors in Children
RadiologyInfo.org. Lumbar Puncture
RadiologyInfo.org. Stereotactic Radiosurgery
National Cancer Institute. Children with Cancer: A Guide for Parents
Children's Oncology Group. Locations
National Comprehensive Cancer Network. Member Institutions
Content reviewed and produced following the Rinnit editorial framework. Last updated: October 13, 2026.
This article is for educational purposes only and is not medical advice. Always consult a qualified healthcare professional for diagnosis and treatment.
References
Mayo Clinic Staff. Pediatric brain tumors - Symptoms and causes. Mayo Clinic. Accessed October 15, 2026. https://www.mayoclinic.org/diseases-conditions/pediatric-brain-tumor/symptoms-causes/syc-20361694
Mayo Clinic Staff. Pediatric brain tumors - Diagnosis and treatment. Mayo Clinic. June 30, 2021. https://www.mayoclinic.org/diseases-conditions/pediatric-brain-tumor/diagnosis-treatment/drc-20361706
National Cancer Institute. Brain Tumors—Patient Version. National Cancer Institute. Accessed October 15, 2026. https://www.cancer.gov/types/brain
American Cancer Society. Brain Tumors in Children. American Cancer Society. Last revised February 9, 2026. https://www.cancer.org/cancer/types/brain-spinal-cord-tumors-children.html
Wilne S, Koller K, Collier J, et al. The diagnosis of brain tumours in children: a guideline to assist healthcare professionals in the assessment of children who may have a brain tumour. Arch Dis Child. 2010;95(7):534-9. PMID 20371594. https://doi.org/10.1136/adc.2009.162057
Lassaletta Á, Morales JS, Valenzuela PL, et al. Neurocognitive outcomes in pediatric brain tumors after treatment with proton versus photon radiation: a systematic review and meta-analysis. World J Pediatr. 2023;19(8):727-740. PMID 37154861. https://doi.org/10.1007/s12519-023-00726-6
Mizumoto M, Hosaka S, Nakai K, et al. Systematic review and meta-analysis of photon radiotherapy versus proton beam therapy for pediatric intracranial ependymoma: TRP-ependymoma 2024. Heliyon. 2024;10(22):e40372. PMID 39634432. https://doi.org/10.1016/j.heliyon.2024.e40372
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