Rare diseases · Sign or symptom

Abnormal lower lip morphology

Abnormality of lower lip

HP:0000178

What it means

An abnormality of the lower lip.

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: Anomaly of the lower lip · Deformity of the lower lip · Malformation of the lower lip

Abnormal lower lip morphology

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This 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.