Fontanelles typically close by the time a baby is 18 months old.
Here's a more detailed breakdown:
-
Posterior Fontanelle: This smaller fontanelle, located at the back of the baby's head, usually closes first, often within 2 months of birth.
-
Anterior Fontanelle: This larger fontanelle, located at the top of the baby's head, usually closes between 7 and 18 months. This is the fontanelle that most people are referring to when asking about fontanelle closure.
If you are concerned that your baby's fontanelles are closing too early or haven't closed by 18 months, it is recommended that you consult your pediatrician for advice.
