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Craniosynostosis (craniostenosis) is a condition that affects the skull development of a fetus or newborn. One or more of the connections (sutures) between plates in a fetus's or baby's skull close too soon, and the bony plates of the skull fuse too early.
As a result of early fusion of the plates, the affected area of the skull does not expand normally with the growing brain, causing a misshapen head. In severe cases, usually when craniosynostosis affects more than one suture, pressure builds on the brain and may cause long-term complications. This is rare.
Some babies have craniosynostosis because they inherited certain genetic traits from one or both parents. Other causes are not fully understood.
An irregularly shaped head is the most noticeable feature of craniosynostosis, and it is usually noticed at birth or shortly after birth. Imaging tests (such as a skull X-ray or CT scan) may be done to confirm a diagnosis.
Craniosynostosis is treated with surgery to allow the skull to return to its normal shape, grow normally, and prevent further complications. In general, no lasting disfigurement occurs, especially when surgery is done early.
Current as of: August 22, 2019
Adam Husney, MD - Family Medicine & John Pope, MD, MPH - Pediatrics & Kathleen Romito, MD - Family Medicine & Chuck Norlin, MD - Pediatrics
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