Delusional hyper‐identifications of the Frégoli type

Abstract
Patients (7) with the Fregoli syndrome were described. These patients were studied clinically and by routine laboratory tests, EEG (standard and sleep recordings, sphenoidal electrodes), echoencephalograms, air-encephalograms, brain scanning and psychological methods (Wechsler, Rey and Benton tests). All patients were psychotic and in most cases schizophrenia constituted the nosological setting in which the Fregoli syndrome developed. The paranoid element was marked in all cases. All patients were single, young and, with 1 exception, male. Clinical evidence as well as EEG, air-encephalographic, echoencephalographic and psychological findings suggested that a strong organic component contributed to the pathogenesis of the Fregoli syndrome.

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