Crouzon syndrome

What it is

Crouzon syndrome is a genetic condition characterized by premature fusion of the skull bones (craniosynostosis), affecting the shape of the skull and face. Because of its effects on skull development, it can be associated with Chiari malformation.

Understanding Crouzon syndrome

In Crouzon syndrome, certain skull sutures fuse too early, altering skull growth and shape. This abnormal skull development can affect the posterior fossa and craniocervical region, and Crouzon syndrome is among the conditions associated with Chiari malformation (the altered skull base can crowd the posterior fossa, contributing to tonsillar descent). When Chiari occurs in a child with Crouzon syndrome, it is managed as part of the comprehensive, multidisciplinary care these children receive, which addresses skull, facial, and related issues. Recognizing Crouzon syndrome as an associated condition helps ensure Chiari is considered in affected children. Understanding Crouzon syndrome and Chiari clarifies how a craniosynostosis syndrome can relate to Chiari through its effects on skull development.

Why it matters

Understanding Crouzon syndrome and Chiari helps families see how a syndrome affecting skull development can be associated with Chiari, and why Chiari is considered as part of the comprehensive care of affected children.