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Delusional misidentification in association with parkinsonism
D M Roane1, J D Rogers, J H Robinson
1Department of Psychiatry, Beth Israel Medical Center, New York, New York 10003, USA.
Summary
Delusional misidentification syndrome (DMS) can occur in Parkinson's disease with dementia, especially when treated with dopaminergic drugs. This suggests a link between dopaminergic psychosis, frontal lobe issues, and DMS in parkinsonism.
Area of Science:
- Neurology
- Neuroscience
- Psychiatry
Background:
- Delusional misidentification syndrome (DMS) is linked to various neurological disorders.
- Parkinson's disease (PD) is a progressive neurodegenerative disorder.
- Dementia often accompanies advanced Parkinson's disease.
Observation:
- Three cases of DMS in patients with Parkinson's disease and dementia are presented.
- These patients were undergoing treatment with dopaminergic medications.
- DMS symptoms included misidentification of familiar people and places.
Findings:
- DMS in parkinsonism appears to stem from dopaminergic psychosis.
- Cognitive dysfunction, particularly involving the frontal lobe, contributes to DMS.
- The combination of factors suggests a specific pathway for DMS in this population.
Implications:
- DMS may be more common in Parkinson's disease patients than previously recognized.
- Understanding this association can improve diagnosis and patient care.
- Further research into dopaminergic pathways and cognitive deficits in PD is warranted.