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Dr. Leah
Dr. Leah, Board Certified Pediatrician
Category: Paediatrics
Satisfied Customers: 197
Experience:  9 years of practice in Pediatrics
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9month baby boy top of head not closed head slightly bigger

Customer Question

9month baby boy top of head not closed head slightly bigger than normal develomentnormal
Submitted: 1 year ago.
Category: Paediatrics
Expert:  Dr. Leah replied 1 year ago.
Dr. Leah :

Hello and thank you for your question.

Dr. Leah :

In 9 month olds, the anterior fontanelle (opening between the skull bones on top of the head) stays open until about 18 months to 2 years old. I should be soft and slightly depressed between the bones.

Dr. Leah :

The best way to know if there is a concern about his head or fontanelle size is for him to see his doctor and take a measurement of his head, called a head circumference. This is typically measured at birth and every well check up during the first year of life. If there is a change in head or fontanelle size, this can be detected by taking a measurement and comparing it to prior ones.

Dr. Leah :

There is one aspect about a fontanelle that would be very concerning: if it seems to be bulging above the level of the skull bones. This would be a sign of increased fluid and pressure around the brain and warrants immediate medical attention. If your son's fontanelle looks like what I just described, please take him to his doctor today.

Dr. Leah :

If the fontanelle is not bulging and his head circumference is progressing along his usual curve on his growth chart, there should be no cause for concern.

Dr. Leah :

If you have further questions when you return online, feel free to ask.

Dr. Leah :

Hello. I see that you are back online. Do you have further questions?

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