What is the efficacy of short-term outpatient EEG video monitoring in the diagnosis of psychogenic nonepileptic seizures (PNES)?

Updated: Jul 26, 2018
  • Author: Selim R Benbadis, MD; Chief Editor: Helmi L Lutsep, MD  more...
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Answer

When the clinical findings strongly suggest PNES, patients can undergo short-term outpatient EEG video monitoring with activation. This study can be cost-effective while retaining the same specificity as other tests and reasonably high sensitivity.

In one series, 10 of 15 patients had their habitual nonepileptic seizures with hyperventilation plus photic stimulation plus suggestion.

At the author's center, this test is routinely used, and the typical episode is observed in 70-80% of patients, obviating long-term EEG video monitoring. [11]


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