A European multicentre survey of impulse control behaviours in Parkinson's disease patients treated with short- and long-acting dopamine agonists

Background and purposeImpulse control disorders (ICDs) in Parkinson's disease (PD) are associated primarily with dopamine agonist (DA) use. Comparative surveys of clinical occurrence of impulse control behaviours on longer acting/transdermal DA therapy across age ranges are lacking. The aim of this study was to assess the occurrence of ICDs in PD patients across several European centres treated with short- or long-acting [ropinirole (ROP); pramipexole (PPX)] and transdermal [rotigotine skin patch (RTG)] DAs, based on clinical survey as part of routine clinical care. MethodsA survey based on medical records and clinical interviews of patients initiating or initiated on DA treatment (both short- and long-acting, and transdermal) across a broad range of disease stages and age groups was performed. ResultsFour hundred and twenty-five cases were included [mean age 68.3 years (range 37-90), mean duration of disease 7.5 years (range 0-37)]. ICD frequencies (as assessed by clinical interview) were significantly lower with RTG (4.9%; P < 0.05) compared with any other assessed DAs except for prolonged release PPX (PPX-PR). The rate of ICDs for PPX-PR (6.6%) was significantly lower than for immediate release PPX (PPX-IR) (19.0%; P < 0.05). Discontinuation rates of DA therapy due to ICDs were low. ConclusionOur data suggest a relatively low rate of ICDs with long-acting or transdermal DAs, however these preliminary observational data need to be confirmed with prospective studies controlling for possible confounding factors.