Proportion of children aged under 4 years with suspected abnormal head shape or size who have the longest of 3 head measurements plotted on a standardised growth chart, corrected for gestational age.

If a child's weight, height, or head size is below the 5th percentile, it's important to see if her growth points have always paralleled the 5th percentile line -- which would mean her growth rate ...

Your pediatrician will place your child’s measurements on a chart that compares them to the average height and weight for someone your child’s age. These are known as percentiles.

Microcephaly means "small head." It happens when a baby's brain stops growing or developing. WebMD explains what it is and how gene problems, alcohol, drugs, and infections play a role.

We would argue that measuring head size in healthy infants can cause unnecessary anxiety for parents and should only be used when there are other concerns about a baby’s development or head growth.