Rare diseases · Sign or symptom
Facial hyperostosis
Enlargement of the facial bones
HP:0005465
What it means
Excessive growth (overgrowth) of the facial bones, that is of the facial skeleton.
Rare diseases that can present with this2
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: Enlargement of facial bones · Enlargement of facial skeleton · Excessive growth of facial bones · Excessive growth of facial skeleton · Hyperostosis of facial bones · Hyperostosis of facial skeleton · Hypertrophy of facial bones · Hypertrophy of facial skeleton
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.