Capgras Syndrome in Chloroquine Induced Psychosis

Capgras syndrome is considered a rare syndrome in which the patient believes that a person usually a close relative, has been replaced by an exact double or imposter and maintains this false belief despite evidence to the contrary (Capgras and Reboul-Lachaux 1923). Capgras' syndrome has usually been described as a manifestation of schizophrenia. Some others (Vogel 1974, Hay man and Abrams 1977) believe that, since this syndrome occurs in clear sensorium, there is no organic basis for this. However in recent years an increasing number of reports have appeared describing the Capgras' syndrome as a manifestation of many organic conditions (Alexander 1979, Madakasira and Hall 1981, MacCallum 1973).