‘Photosensitive epilepsy’ encompasses heterogeneous epileptic conditions in which seizures are triggered by photic stimulation. It is not an . Epileptic photosensitivity, the propensity to seizures induced by light, is a genetically determined trait that may be asymptomatic throughout life or manifest with epileptic seizures. photosensitivity, i.e. provocation of photoparoxysmal responses by intermittent photic stimulation (IPS), may or may not be associated with clinical photosensitivity.
Abnormal EEG responses to light or pattern stimulation; occurs in 0.3% to 3% of the population.
Some recognized syndromes of generalized epilepsy (IGE), such as (), show a high of clinical or EEG photosensitivity. High prevalence of photosensitivity is found in certain forms of severe epilepsy, such as Dravet (>40%), Unverricht-Lundborg disease (90%), and other progressive myoclonic epilepsies.
Of 685 children affected by the TV Pokemon cartoon incident in Japan, only 24% who had a seizure during the cartoon had previously experienced a seizure.
Age at onset
Properly applied intermittent photic stimulation (IPS) elicits abnormal photoparoxysmal responses (PPR) that may be (1) posterior PPR which are the mildest form of PPR (50% have clinical photosensitivity) and (2) generalized PPR, which are highly associated (90%) with clinical photosensitivity.
*Expert opinion, please check FDA-approved indications and prescribing information
This page was adapted from:
The educational kit on epilepsies
Originally published by MEDICINAE
Reviewed and revised June 2008 by Steven C. Schachter, MD
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