Braeleigh does not have a syndrome called "Braleigh's syndrome." Braeleigh is a child with Apert syndrome, a genetic disorder affecting skull development.
Apert syndrome, which Braeleigh has, is a genetic condition occurring in approximately one in 70,000 births. The primary characteristic is premature fusion of certain skull bones (craniosynostosis). This fusion impacts the skull's shape and facial features. This is due to a fusion of a chromosome that directs bone formation in the body.
While the question specifically asks about "Braleigh's syndrome," it's important to understand that such a syndrome doesn't exist. The question likely stems from confusion or a misunderstanding related to Braeleigh's diagnosis of Apert syndrome.