Dementia associated with Parkinson's disease: Applying the Movement Disorder Society Task Force criteria

► MDS Task Force criteria for Parkinson's disease dementia (PD) have been proposed. ► In this study, DSM-IV and MDS Task Force criteria were compared in 299 PD patients. ► Agreement between MDS Task Force and DSM-IV criteria was substantial. ► DSM-IV criteria failed to identify 22% of patients who met MDS Task Force criteria. ► For PD dementia, MDS Task Force are more sensitive than DSM-IV criteria.