Understand the normal range of a 6-month-old baby’s head circumference.

An abnormally large head circumference in a three-month-old baby may be a symptom of hydrocephalus or abnormal brain development.

Understanding the important considerations when children with cerebral edema present with a scissor gait of the lower limbs, including the significance of head circumference measurement and early diagnosis.

My baby, a two-month-old boy, has a head circumference of 43cm, which is relatively large for his age. The reasons for an abnormally large head circumference may include physiological factors (such as family inheritance) and pathological factors (such as hydrocephalus, rickets). It is recommended to undergo a brain CT scan to rule out pathological causes.