Rare diseases · Sign or symptom
Small hypothenar eminence
HP:0010487
What it means
Reduced muscle mass on the ulnar side of the palm, that is, reduction in size of the hypothenar eminence.
Rare diseases that can present with this6
Common30–79%
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: Hypoplasia of the hypothenar eminence · Hypothenar hypoplasia
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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.