To make a diagnosis, the healthcare provider may consider symptoms and health history, and do a physical exam of the skull and body. You will often be referred to a specialist, such as a geneticist to help make a diagnosis. The healthcare provider may also order tests:
Head size is often considered during diagnosis. A healthcare provider will use a measuring tape to measure the distance around your baby’s head (circumference). The tape is usually placed just above the eyebrows and around the widest part of the head. This number is compared with standard growth charts.
Head size can change as a baby grows into a toddler or young child. A child’s head size may be measured at every well visit or office visit to see if the head is changing shape. This usually continues until age 3, unless there is a reason to keep track past that age.