Saturday, March 22 2003
Craniosynostosis is a congenital (present at birth) defect that causes one or more sutures on a baby's head to close earlier than normal. Sutures are connections that separate each individual skull bones. The early closing of a suture leads to an abnormally shaped head.
Causes of Craniosynostosis
The cause of craniosynostosis is unknown, but many studies suggest the use of antidepressants during pregnancy increase the risk to the fetus. A person's genes may also play a role in craniosynostosis. The hereditary form often occurs with other defects that can cause seizures, diminished intellectual capacity, and blindness. Genetic disorders commonly associated with craniosynostosis include Crouzon, Apert, Carpenter, Chotzen, and Pfeiffer syndromes.
However, most cases of craniosynostosis occur in a family with no history of the condition, and children with craniosynostosis are otherwise healthy and have normal intelligence. There are different types of craniosynostosis. Sagittal synostosis (scaphocephaly) is the most common type. It affects the main (sagittal) suture on the very top of the head. The early closing forces the head to grow long and narrow, instead of wide. Babies with this type of craniosynostosis tend to have a broad forehead. It is more common in boys than girls.
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