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.”
- 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)
- 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)
- use of antipsychotic drugs
Causes
- 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