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A Study of 42 Attacks in Six Patients, With Intensive Monitoring

Bindu T. Desai, MD; Roger J. Porter, MD; J. Kiffin Penry, MD

Arch Neurol. 1982;39(4):202-209.

Abstract
• Intractable complex partial seizures and seizures of unknown type were studied in 78 patients, six of whom were found to have psychogenic seizures. Evaluation by intensive monitoring included simultaneous six-hour telemetered EEG and videotape recordings and daily determination of plasma antiepileptic drug levels. Diagnosis was determined by assessment of four major criteria: deviation of seizures from characteristics of known seizure types, absence of epileptiform activity in the ictal EEG, absence of slowing in the postictal EEG, and relation of seizure frequency to decreasing plasma concentrations of antiepileptic drugs. No single criterion is sufficient for an unequivocal diagnosis of psychogenic seizures.

Author Affiliations
From the Experimental Therapeutics Branch and the Epilepsy Branch, National Institute of Neurological and Communicative Disorders and Stroke, Bethesda, Md. Dr Desai is now with Cook County Hospital, Chicago, and Dr Penry is now with Bowman Gray School of Medicine, Winston-Salem, NC.

Footnotes
Accepted for publication July 12, 1981.

Reprint requests to Epilepsy Branch, NINCDS, Federal Building, Room 114, National Institutes of Health, Bethesda, MD 20205 (Dr Porter).

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