title: Capgras Syndrome associated with the use of psychoactive substances.
abstract: BACKGROUND
  Capgras syndrome has originally been described as psychiatric syndrome. However, in the last few years reports of patients with this syndrome has significantly increased in patients with neurological, metabolic, and infectious diseases and those who consume alcohol. Different hypotheses have been proposed to explain the neurobiology of this very unusual symptom, such as changes in the dopamine circuit and specific dysfunctions in facial processing.
  
  
  METHODS
  In this work we present a new case of Capgras syndrome, associated with an acute cocaine overdose, which was transient and reversible.
  
  
  CONCLUSIONS
  The neurobiological bases of this syndrome are analysed, along with their relationship with the changes induced by cocaine use. Thus, Capgras syndrome could be the expression of functional changes at frontal-temporal level, and the paralimbic region secondary to the consumption of psychoactive substances such as cocaine.
authors: Hospital Neuropsiquiátrico Braulio A. Moyano, Buenos Aires, Argentina. ezequielmercurio@gmail.com
authors: Ezequiel N
authors: EN
authors: Mercurio