Why is head circumference measured in babies?

Head circumference is measured because it reflects brain growth. In the first two years of life, the brain grows rapidly, and the skull expands to accommodate it. Consistent head circumference growth within the normal range is a positive sign of healthy neurological development. If your baby's head circumference falls outside the expected range or changes suddenly, your pediatrician will investigate further. These charts are for educational purposes. Always talk to your doctor for best advice and guidance.