Rare diseases · Sign or symptom
Abnormal pigmentation of the oral mucosa
HP:0100669
What it means
An abnormality of the pigmentation of the mucosa of the mouth.
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: Abnormal color of the oral mucosa · Abnormal colour of the oral mucosa · Abnormal pigmentation of oral cavity · Abnormal pigmentation of oral mucous membrane · Abnormal pigmentation of the oral mucosa/gingivae
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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.