Rare diseases · Sign or symptom
Abnormal vertebral artery morphology
HP:0030321
What it means
An anomaly of the vertebral artery, the major artery of the neck that originates from the subclavian artery and merges to form the single midline basilar artery in a complex called the vertebrobasilar system.
Rare diseases that can present with this1
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: Abnormality of the vertebral artery
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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.