The head circumference of a 2 year old baby is 47cm which is normal. Generally, the head circumference of babies around 2 years old is around 48cm, 47cm is normal.
Head circumference refers to the length of the baby’s head through the upper edge of the arch of the eyebrow and the occipital node, symmetrical around the head of a week. Head circumference is related to the growth and development of the baby’s skull. Brain growth is more advanced than other systems during the fetal period, so the head circumference is larger at birth, about 33~34cm.
In the first year, the head circumference grows about 12cm, the head circumference of a one year old baby is 45~47cm, and in the second year, the head circumference grows 2cm, so the head circumference of a two year old baby is about 47~49cm which is a normal situation.
The size of head circumference reflects the situation of the brain, head circumference is too small to be alert to the possibility of brain dysplasia, head circumference is too large to be alert to the possibility of hydrocephalus.
It is recommended that 2-year-old babies go to the child health department of the hospital on a regular basis, complete the physical examination under the guidance of the doctor, and follow the doctor’s instructions for targeted treatment.