Causes

Often the cause of craniosynostosis is not known, but sometimes it's related to genetic disorders.

• Nonsyndromic craniosynostosis is the most common type of craniosynostosis, and its cause is unknown, although it's thought to be a combination of genes and environmental factors.
• Syndromic craniosynostosis is caused by certain genetic syndromes, such as Apert syndrome, Pfeiffer syndrome or Crouzon syndrome, which can affect your baby's skull development. These syndromes usually also include other physical features and health problems.