Craniosynostosis is the result of the premature fusion of different sections of the skull. This means the skull is unable to grow in affected areas.
When one area of the skull is prevented from growing, other areas may "overgrow" to compensate and limit the pressure developing around the brain. A lack of growth in some areas and compensatory growth in other areas will result in an altered head shape.
Craniosynostosis is usually classfied as either:
A syndrome is a range of symptoms related to a common cause, which is usually – but not always – genetic.