Early disease onset may put some Parkinson’s disease patients on dopamine agonists at increased risk of becoming pathological gamblers, say US researchers. Twenty-one patients who developed this problem had the onset of Parkinson’s at the age of 60, compared with 66 in the 42 patients who did not develop a gambling addiction. Higher novelty-seeking behaviour and a family history of alcohol abuse were also risk factors (Arch Neurol 2007; 64: 212–6).
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