Rare diseases · Sign or symptom
Photosensitive myoclonic seizure
HP:0001327
What it means
Generalised myoclonic seizure provoked by flashing or flickering light.
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: Photically induced myoclonic seizure · Photomyoclonic seizure · Photomyoclonic seizures
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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.