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Self-induced pattern-sensitive epilepsy in childhood
M Matricardi1, M Brinciotti, G Trasatti
1Istituto di Neuropsichiatria Infantile, Università La Sapienza, Roma, Italy.
Insights
This study identified self-induced pattern-sensitive epilepsy in five children with refractory epilepsy. Specific visual patterns triggered seizures, highlighting the need for accurate diagnosis and treatment.
Area of Science:
- Neurology
- Epileptology
- Neurophysiology
Background:
- Pattern-sensitive epilepsy is a rare form of epilepsy.
- Self-induced seizures can be triggered by specific visual stimuli.
- Refractory epilepsy often presents with complex seizure types and cognitive impairment.
Observation:
- Five children (1 boy, 4 girls) with refractory epilepsy and moderate to severe intellectual disability were studied.
- All patients exhibited spontaneously self-induced seizures documented by electroencephalography (EEG).
- Neurophysiological assessments included baseline EEG, activation procedures, and EEG during structured visual stimuli presentation.
Findings:
- A highly specific and selective visual pattern triggered EEG anomalies in each patient.
- Clinical seizures were reliably reproduced by the same patterns used by patients to self-induce them.
- The study confirmed a distinct form of self-induced, pattern-sensitive epilepsy.
Implications:
- Identifying this specific epilepsy type is crucial for effective management.
- Tailored treatments targeting visual triggers may be beneficial.
- Further research into the mechanisms of pattern-induced seizures is warranted.
Abstract:
We studied five children (1 boy and 4 girls) with self-induced pattern-sensitive epilepsy. All patients had refractory epilepsy with multiform, though mainly myoclonic, seizures and medium grade to severe mental retardation. Spontaneously self-induced seizures were documented in all cases by EEG. All the patients underwent full neurophysiological assessment (baseline EEG recording, with activation: eyelid closed, hyperventilation, ILS, EEG during the randomized presentation of 3 types of spatial structured stimuli, VEP-F and VEP-PR). The pattern that triggered the EEG anomalies was highly specific and selective for each patient. Clinical seizures were reproduced by the same patterns as the ones used by the patients to bring on the seizures at will. Authors stress the importance of identifying such peculiar type of epilepsy and of attempting adequate treatment.