A 7-year observation of the effect of subthalamic deep brain stimulation on impulse control disorder in patients with Parkinson's disease.

•Subthalamic deep brain stimulation (DBS) improves baseline impulse control disorders (ICDs).•It can result in the development of “transient” de novo ICDs in the short-term.•There is a unique group of the patients who develop ICDs a long time after DBS.•De novo ICDs a long time after DBS may suggest intrinsic susceptibility to ICDs.