Rare diseases · Sign or symptom

Dysgenesis of the cerebellar vermis

HP:0002195

What it means

Defective development of the vermis of cerebellum.

Note that the term cerebellar dysgenesis is generally used to refer to a morphological abnormality of the cerebellum that is of presumed developmental (rather than acquired) origin,and is often diagnosed by means of magnetic resonance tomography.

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

Dysgenesis of the cerebellar vermis

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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.