Delusional misidentification syndromes: a descriptive study.

Twenty-three patients with one or more delusional misidentification syndromes were studied. The majority of the subjects were females and the Capgras syndrome was the most common delusional misidentification syndrome in our sample. The Capgras syndrome cases were significant older than the Fregoli syndrome cases. Schizophrenia and schizo-affective psychosis were significantly associated with Fregoli syndrome. Discriminant function analysis was carried out on the sample and showed that age and symptoms of nuclear schizophrenia were the variables most predictive of the type of delusional misidentification. These findings are discussed in the light of current literature.