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Epilepsy Res. 2010 May;89(2-3):271-7. doi: 10.1016/j.eplepsyres.2010.01.012. Epub 2010 Feb 10.

Lennox-Gastaut syndrome in adulthood: clinical and EEG features.

Author information

1
IRCCS Centro Neurolesi Bonino-Pulejo, Via Palermo, SS 113, C.da Casazza, 98124 Messina, Italy. edoferl@hotmail.it

Erratum in

  • Epilepsy Res. 2010 Aug;90(3):313. Nikaronova, Marina [corrected to Nikanorova, Marina].

Abstract

PURPOSE:

We performed a retrospective study to investigate seizure, EEG, social and cognitive outcome in adult LGS subjects.

METHODS:

We retrospectively evaluated 27 LGS patients aged 40-59 years. We assessed in particular the evolution of different seizure types and EEG findings, as well as cognitive and social outcome.

RESULTS:

During the early stages of the disease, all patients presented tonic seizures (TS) during wakefulness and sleep, 20/27 had atypical absences (AA), more rarely other seizure types. EEG showed slow background activity in 21/27 patients, diffuse slow spike-wave discharges (DSSW) during wakefulness in 22/27, and bursts of diffuse fast rhythms (DFR) in sleep in all patients. At last observation, 11 patients only had TS during wakefulness, but all still presented TS during sleep; AA persisted in 6 patients. EEG showed normal BA in 12/27 patients; only 7/27 still presented DSSW. On the contrary, sleep EEG showed the persistence of DFR in all. A moderate to severe cognitive impairment was observed in 26/27 patients.

CONCLUSIONS:

In adult LGS patients TS during sleep remain the major seizure type; moreover, a standard waking EEG may be normal. Thus, polysomnography represents the most important mean of investigation also in adult LGS patients.

[Indexed for MEDLINE]

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