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Delusional Misidentification Syndromes

Capgras Syndrome

Causes

  • Also known as the Syndrome of Doubles

  • "An individual believes that other persons, generally those emotionally close to him or her, have been substituted by duplicates or impostors closely resembling the originals.”
  • Lesions on the brain

  • Disruption in the right hemisphere of the brain

Intermetamorphosis Syndrome

Syndrome of Subjective Doubles

  • “Intermetamorphosis syndrome, a rare variant of Capgras Syndrome involving a patient’s perceiving that an individual had been transformed both psychologically and physically into another person.”
  • to individuals who have the belief that there are (one or more) doubles of themselves (i.e., doppelgangers) that carry out actions and behaviours independently and lead a life of their own but that have part or sometimes all of the Syndrome of Subjective Doubles sufferer’s personality.”

Causes

  • Neurodegenerative diseases (ex: paranoid schizophrenia)

  • Dementia

  • Brain injury

  • Disruption of nerve pathways between the occipital lobe and the cerebrum

Treatment

  • Use of antipsychotic drugs

  • Decrease in use of Levodopa (directed towards individuals on the Levodopa treatment plan)
  • Individual counseling

  • use of antipsychotic drugs

Causes

  • Mental disorder

  • Neurological disorder

  • Brain trauma to the right central hemisphere of the brain

Causes

  • Brain injury, trauma to the right frontal and left temporo-parietal regions

  • Levodopa treatment
  • Levodopa is a type of medication. The side affects are visual hallucinaions and delusions. Over time, these delusions become a reality as they take over the patient's mind.

Fregoli Syndrome

Treatment

  • Depression: tricylic antidepressants

  • Schizophrenia or organic phychosis: neurolyctics or trifluoperazine

  • In certain cases: antipsychotics with treatment of coexisting dysfunctions
  • "a disorder in which the affected individual forms a delusional belief that several different people, usually people close to the individual, are in fact just one single person who repeatedly changes their appearance or form.”

  • Ususally accompanies other mental illnesses (ex: Schizophrenia and depression
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