10.6084/m9.figshare.5126791.v1 van Coller R. van Coller R. Slabbert P. Slabbert P. Vaidyanathan J. Vaidyanathan J. Schutte C. Schutte C. Supplementary Material for: Successful Treatment of Disabling Paroxysmal Nonkinesigenic Dyskinesia with Deep Brain Stimulation of the Globus Pallidus Internus Karger Publishers 2014 Paroxysmal nonkinesigenic dyskinesia Paroxysmal dyskinesia Deep brain stimulation Globus pallidus internus 2014-10-28 00:00:00 Dataset https://karger.figshare.com/articles/dataset/Supplementary_Material_for_Successful_Treatment_of_Disabling_Paroxysmal_Nonkinesigenic_Dyskinesia_with_Deep_Brain_Stimulation_of_the_Globus_Pallidus_Internus/5126791 Paroxysmal nonkinesigenic dyskinesia (PNKD) causes episodes of treatment-resistant involuntary movements. Previous case reports showed effective treatment of PNKD with deep brain stimulation (DBS). We report 2 patients in whom DBS was highly successful when other treatment modalities had failed. <b><i>Methods:</i></b> Two patients aged 34 and 24 years with a longstanding history of PNKD were treated with globus pallidus internus (GPi) DBS. Motor effects were monitored and followed up postoperatively and again at 6 months after surgery. <b><i>Results:</i></b> Both patients responded very well to GPi DBS with complete suppression of dyskinesia after surgery in 1 patient and in the second after an additional adjustment of stimulation. <b><i>Conclusion:</i></b> GPi DBS might be an effective alternative treatment modality for PNKD.