Rare diseases · Sign or symptom
Anotia
HP:0009892
What it means
Complete absence of any auricular structures.
Complete absence of the auricle (external ear). The skin of the cheek passes smoothly over the aural area without definite elevation or depression.
Rare diseases that can present with this9
Very common80–99%
3Sometimes5–29%
4The 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: Absent ear · Absent ears · Congenital absence of external ear
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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.