The electroencephalogram in Tourette syndrome

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Abstract
The electroencephalogram (EEG) was studied in 38 patients with Tourette syndrome. Psychometric tests and neurological evaluation identified patients with signs of additional central nervous system dysfunction. Thirteen patients (34%) had some EEG abnormality. In contrast to findings by other investigators, epileptiform activity was uncommon (only 2 out of 38). Most of the patients with EEG abnormalities either had other objective signs of neurological dysfunction or were taking haloperidol, a drug known to disturb the EEG.

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