Aphasia due to simple partial status epilepticus is rare. We report a case of prolonged mixed aphasia without clouding of consciousness in a patient with an old history (10 years) of multiple sclerosis (MS). We found a clear clinical-EEG correlation with a continuous epileptic pattern in the shape of periodic lateralized epileptiform discharges (PLEDs). Clinical, laboratory and neurora-diological data ruled out possible etiological conditions other than MS and suggested that the development of new subcortical demyelinating lesions might play a critical role in seizure production. These findings, besides the role of PLEDs as an intrinsic feature of the status epilepticus condition, are discussed in relation to the literature.

Keywords:
Epileptic aphasia, Status epilepticus, Multiple sclerosis, Electroencephalography, Periodic lateralized epileptiform Discharges, Cortical isolation
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© 1996 S. Karger AG, Basel
1996
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