The syndrome of Capgras.

In eleven patients with the syndrome of Capgras, the clinical data and the results of electroencephalographic, echoencephalographic, air-encephalographic, psychological and brain-scanning investigations are presented and discussed. All patients were psychotic: six were schizophrenic, four were depressive and one suffered from an organic psychosis. A paranoid element was marked in all cases. The present evidence supports the view that organic factors are important in the pathogenesis of Capgras' syndrome.