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Epilepsia arithmetices: study of four cases
1Department of Neurology, School of Medicine, University of Naples Federico II, Italy.
Seizure
|March 1, 1993
Summary
Four patients experienced seizures triggered by calculation or games, a condition known as epilepsia arithmetices (EA). Diagnosis of EA in idiopathic generalized epilepsy (IGE) can rely on clinical observation when EEG evidence is absent.
Area of Science:
- Neurology
- Epileptology
Background:
- Idiopathic generalized epilepsy (IGE) encompasses various epilepsy syndromes.
- Juvenile myoclonic epilepsy of Janz is a common form of IGE.
Observation:
- Four cases of epilepsia arithmetices (EA) were identified among 2000 new epilepsy patients over 12 years.
- All EA patients had IGE, likely juvenile myoclonic epilepsy of Janz.
- Seizures were triggered by calculation or card/board games.
Findings:
- Electroencephalographic (EEG) abnormalities were evoked by arithmetic tasks in only one patient.
- Diagnosis of EA was primarily clinical in the other three patients.
- Focal clinical (myoclonic jerks) and EEG signs suggest localized brain activation during calculation.
Implications:
- Clinical criteria alone may suffice for diagnosing EA in IGE patients.
- EA highlights the potential for specific cognitive tasks to trigger seizures.
- Understanding EA can inform management strategies for photosensitive and stimulus-induced epilepsies.