Rare diseases · Sign or symptom
Abnormality of the crus of the helix
HP:0009895
What it means
An abnormality of the crus of the helix, which is the horizontal piece of cartilage located outside the ear canal that divides the upper and lower parts of the ear.
Rare diseases that can present with this1
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: Abnormality of the crus of the 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.