SummaryA case is described in which a diagnosis of paranoid schizophrenia was made using the criteria of Schneiderian first-rank symptoms. The patient showed the Capgras syndrome, with delusional misidentification of her son and other people in her environment, and also Ekbom's syndrome, with the delusion that she was infested with parasitic worms which migrated between various parts of her body. In this case, the two syndromes are descriptions of a specific delusional content, and occur as part of the psychopathology within a schizophrenic disorder, rather than as distinct disease entities.