Rare diseases · Sign or symptom

Basal ganglia gliosis

HP:0006999

What it means

Focal proliferation of glial cells in the basal ganglia.

Gliosis refers to a proliferation of astrocytes in an area of damage of nervous tissue.

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: Gliosis in the basal ganglia

Basal ganglia gliosis

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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.