What is the most common method for diagnosing craniosynostosis in infants?

The most common method for diagnosing craniosynostosis in infants is measuring the baby's skull. This initial assessment is critical as it allows healthcare providers to identify abnormal head shapes and sizes that may indicate craniosynostosis. During the assessment, specific measurements of the skull are taken, such as the circumference and various dimensions, which can reveal asymmetries or abnormal growth patterns associated with the condition.

While diagnostic imaging like CT scans and X-rays can play a role in confirming the diagnosis and assessing the extent of suture fusion, these are typically not the first line of assessment. Genetic testing, while important in some cases of craniosynostosis due to syndromic associations, does not provide immediate information about the structure of the skull and is not used as a primary diagnostic tool.

Thus, the measurement of the baby's skull serves as a foundational step in the evaluation of craniosynostosis, guiding further investigation and management as needed.