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Published on: September 21, 2017
Dopamine dysregulation syndrome in non-Parkinson's disease patients: a systematic review
Jodi Cartoon1, Jothi Ramalingam2
1Psychiatry Registrar, Consultation Liaison Psychiatry Department, Gosford Hospital, Gosford, NSW, Australia.
Objectives:
To explore the presence of dopamine dysregulation syndrome in non-Parkinson's disease patients receiving dopamine replacement therapy.
Methods:
Electronic searches were conducted of Medline, Embase, PsycINFO and PreMedline to capture articles related to dopamine misuse or factitious disorder combined with the presence of dopamine replacement therapy or a non-Parkinson's disease population. In total, 430 articles were reviewed and studies that addressed dopamine dysregulation syndrome in non-Parkinson's disease patients were included.
Results:
Nine case reports were identified.
Conclusions:
The pathophysiology underlying dopamine dysregulation syndrome has been thoroughly explored with numerous mechanisms posited. What remains unclear is whether dopamine dysregulation syndrome is a phenomenon specific to Parkinson's disease, as indicated in the proposed diagnostic criteria. A more useful predictor of susceptibility to dopamine dysregulation syndrome may be temperamental traits such as novelty seeking and impulsivity, which overlap with predisposing factors for an addiction disorder.
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