Related Experiment Videos
Carbamazepine-exacerbated epilepsy with multifocal shifting independent epileptiform discharges on
M Kimura1, K Yoshino, N Suzuki
1Department of Pediatrics, National Nishitottori Hospital, Tottori, Japan.
Insights
Carbamazepine (CBZ) worsened seizures in a child with epilepsy and spastic quadriplegia. Multifocal independent epileptiform discharges (MIED) may indicate widespread brain dysfunction and risk seizure exacerbation.
Area of Science:
- Neurology
- Clinical Epilepsy
Background:
- A 7-year-old girl with a history of epilepsy and spastic quadriplegia, resulting from infantile status epilepticus, presented with worsening seizure control.
- The patient was undergoing treatment with carbamazepine (CBZ) and clonazepam for generalized myoclonic and tonic seizures.
Observation:
- Seizure frequency increased significantly when carbamazepine dosage was escalated from 200 mg/day to 400 mg/day.
- Discontinuation of carbamazepine led to a notable decrease in seizure frequency, falling below baseline levels.
Findings:
- Serial electroencephalograms (EEGs) revealed multifocal independent epileptiform discharges (MIED) with shifting localization.
- These MIED findings suggest widespread cerebral dysfunction rather than a localized epileptic focus.
Implications:
- Carbamazepine may exacerbate seizures in patients with multifocal independent epileptiform discharges.
- Widespread cerebral dysfunction, as indicated by MIED, could be a risk factor for drug-induced seizure worsening in epilepsy patients.
Abstract:
A 7 year old girl with epilepsy and spastic quadriplegia secondary to an episode of status epilepticus at 4 months of age is reported. At the age of 6 years, she began to experience increased generalized myoclonic and tonic seizures during treatment with carbamazepine (CBZ) 200 mg/day and clonazepam 1.5 mg/day. When the CBZ was increased to 400 mg/day, the seizures increased dramatically in frequency. Following discontinuation of CBZ, the seizure frequency decreased to a level less than that prior to starting CBZ. Serial electroencephalograms displayed multifocal independent epileptiform discharges (MIED) characterized by shifting localization, which could be one of the risk factors for exacerbation by CBZ. In this case MIED may indicate widespread rather than localized cerebral dysfunction.