Rare diseases · Sign or symptom
Undetectable electroretinogram
HP:0000550
What it means
Lack of any response to stimulation upon electroretinography.
Rare diseases that can present with this2
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: Abolished electroretinogram · Absent electroretinogram · Extinction of electroretinogram · Extinguished electroretinogram · No light-evoked response on electroretinogram · Undetectable ERG
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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.