Rare diseases · Sign or symptom
Broad face
Increased breadth of face
HP:0000283
What it means
Bizygomatic (upper face) and bigonial (lower face) width greater than 2 standard deviations above the mean (objective); or an apparent increase in the width of the face (subjective).
Note that broad face is distinct from round face.
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: Broad facies · Horizontal excess of face · Horizontal hyperplasia of face · Increased horizontal dimension of face · Increased transverse dimension of face · Increased width of face · Transverse excess of face · Transverse hyperplasia of face
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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.