Rare diseases · Sign or symptom
Abnormality of neuronal migration
HP:0002269
What it means
An abnormality resulting from an anomaly of neuronal migration, i.e., of the process by which neurons travel from their origin to their final position in the brain.
Rare diseases that can present with this39
Very common80–99%
8Common30–79%
11- Acalvaria
- Autosomal recessive chorioretinopathy-microcephaly syndrome
- Carnitine palmitoyl transferase II deficiency, neonatal form
- Congenital osteogenesis imperfecta-microcephaly-cataracts syndrome
- Galloway-Mowat syndrome
- Leber congenital amaurosis
- Maternal hyperthermia-induced birth defects
- Neonatal adrenoleukodystrophy
- Neu-Laxova syndrome
- Subependymal nodular heterotopia
- Symmetrical thalamic calcifications
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: Abnormal neuronal migration · Heterotopias/abnormal migration · Migrational brain disorder · Neuronal migration disorder
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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.