Rare diseases · Sign or symptom
Abnormal hippocampus morphology
HP:0025100
What it means
Any structural anomaly of the hippocampus,
The term hippocampus is often used synonymously with hippocampal formation which consists of the hippocampus proper or Cornu Ammonis, the dentate gyrus and the subiculum.
Rare diseases that can present with this9
Very common80–99%
1Common30–79%
2Sometimes5–29%
5The 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: Abnormal morphology of the hippocampus · Abnormality of hippocampus morphology
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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.