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Living with Craniosynostosis syndrome

Early closing of the joints between a baby's skull bones, which can change head shape and sometimes affect the brain.

Understanding Craniosynostosis syndrome

Craniosynostosis syndrome is the early closing of one or more of the joints (sutures) between the bones of a baby's skull.

Normally the bones stay separate until about age 2 while the brain grows. If only one suture closes early, which is most common, the result may be only an unusual head shape. If several close, brain growth can be restricted, which can lead to higher pressure in the skull, seizures, vision loss, or intellectual disability. It can occur alone or as part of a syndrome. Not every child needs surgery, and children who have surgery and are otherwise healthy generally have no long-term complications, especially with one suture.

Signs & symptoms

Symptoms vary depending on how many sutures close early. GARD's summary mentions these:

  • Unusual head shape
  • Higher pressure in the skull
  • Seizures
  • Vision problems
  • Learning or intellectual disability

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include bone and joint specialists and genetic specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    World Craniofacial Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Genetic specialists (geneticists)
Expert care
Expert lists: World Craniofacial Foundation
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Craniosynostosis and Positional Plagiocephaly Support Inc and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
How many sutures are closed, and does my child need surgery?
Is this isolated or part of a syndrome, and would genetic testing help?
What signs of pressure in the head should we watch for?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant, Autosomal Recessive, X-Linked

Most isolated cases happen randomly (sporadic) with no known cause. Some are due to changes in several genes. When craniosynostosis is part of a syndrome, the cause and inheritance depend on the syndrome, and most are autosomal dominant.

Genetic

Also known as: congenital ossification of cranial sutures; congenital ossification of sutures of skull; cranial suture synostosis; craniostenosis; craniostosis; craniosynostosis

Patient organizations

Source: NIH GARD · Craniosynostosis syndromeGARD ID 6209 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Craniosynostosis syndrome.

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