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BackgroundA significant percentage of patients suffering from Parkinson's Disease (PD) experience Impulse Control Disorders (ICDs), contributing to reduced quality of life. As they can be managed by reducing the dopamine dosage, the detection of their presence is crucial for PD treatment plan. Nevertheless, they tend to be under-recognized in clinical practice, since routine screening is not common-despite existing instruments that may support clinicians. This work presents a systematic review on the psychometric properties of instruments measuring ICDs in PD, to test whether clinicians dispose of valid tools that may help them in clinical assessment.MethodA systematic literature search in three databases (EMBASE, MEDLINE, and PsycINFO) was conducted. Quality of the instruments' psychometric properties was evaluated with Terwee et al.'s criteria, and methodological quality of the studies was evaluated with the COSMIN Checklist.ResultsTen studies examining seven instruments were selected. The Questionnaire for Impulsive-Compulsive Disorders in Parkinson's Disease (QUIP) and the Ardouin Scale of Behavior in Parkinson's Disease (ASBPD) resulted to be the best from a psychometric point of view.ConclusionsThough the gold standard for diagnosis remains a detailed diagnostic interview, this review will encourage clinicians to use validated tools to accurately assess ICDs.
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