Abnormal fontanelle morphology

What it means

An abnormality of the fontanelle.

The fontanelles are the regions in an infant's calvaria that are covered by a thick membrane that normally ossify in the first two years of life.

Rare diseases that can present with this3

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Anomaly of the fontanelles