What is the reason for the protrusion of the fontanelle at the top of the baby's head?

Patient's question:

The baby's fontanelle on the top of the head is slightly prominent. I searched online, and it said it could be meningitis, but I also looked at some symptoms of meningitis, and it seems like our baby doesn't have any of them. What could be the reason?

Doctor's answer:

According to your description, it may be because the fontanelle is a gap between several bones, so this protrusion is actually soft tissue. If it's weak, pressing lightly will create an indentation. A weak fontanelle can lead to high intracranial pressure in this infant, which is common in many brain diseases. It is recommended that parents do not worry too much, as a weak fontanelle is generally never misdiagnosed, so it is likely that the bones are weak.

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