Rare diseases · Sign or symptom
Unilateral cleft lip
One sided cleft upper lip
HP:0100333
What it means
A non-midline cleft of the upper lip on one side only.
Rare diseases that can present with this7
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: Unilateral cheiloschisis · Unilateral cleft upper lip
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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.