biostudies-literatureUnknown12(1)Soares TInternational Parkinson and Movement Disorder Society<h4>Background</h4>The MDS-UPDRS has been available in English since 2008, showing satisfactory clinimetric results and being proposed as the new official benchmark scale for Parkinson's disease (PD), being cited as a core instrument for PD in the National Institutes of Neurological Disorders and Stroke Common Data Elements program. For this reason, the MDS created guidelines for development of MDS-UPDRS official, clinimetrically validated translations.<h4>Objective</h4>This study presents the formal process used to obtain the officially approved Portuguese version of the MDS-UPDRS.<h4>Methods</h4>The study consisted of three phases: (1) Independent translation by Portuguese and Brazilian teams followed by a challenging consensus process that this article particularly emphasizes; (2) CogniMovement disorders clinical practice34-42https://www.ebi.ac.uk/biostudies/studies/S-EPMC11736879biostudies-literatureValidation of the Portuguese MDS-UPDRS: Challenges to Obtain a Scale Applicable to Different Linguistic Cultures.PMC11736879Borges VAntunes APVila-Cha NCamargos STBarbosa RSilva SAAlves JBarbosa ERSequeira JStebbins GTValadas AGodinho CMaia RLaPelle NRBezerra TCCoelho MLobo PCanica VMaia DMedeiros MSSantos AFMaciel ROCosta MMCalado AQueimado FSallem FASMaciel ROHTeodoro TVieira SGuedes LTumas VMorgado JMachado CMartins JGoetz CGCury RGMaia RDGuedes LCVelon AGSaba RABrito MMCAlegria PSimoes RMendes ASantos-Lobato BLBarcelos LBde Mello Rieder CRVarandas SFerreira JJMaia DPLimongi JCPde Oliveira DSVeiga Ada Silva CCSoares TRieder CCunha CMassano JVale JNovaretti NCunha ALNRosas MJFerraz HBLampreia TRodrigues AMMDS‐UPDRS Portuguese Validation Study GroupDias SVale TCCamargos SCardoso FBarbosa ETilley BCLuo SfalseValidation of the Portuguese MDS-UPDRS: Challenges to Obtain a Scale Applicable to Different Linguistic Cultures.<h4>Background</h4>The MDS-UPDRS has been available in English since 2008, showing satisfactory clinimetric results and being proposed as the new official benchmark scale for Parkinson's disease (PD), being cited as a core instrument for PD in the National Institutes of Neurological Disorders and Stroke Common Data Elements program. For this reason, the MDS created guidelines for development of MDS-UPDRS official, clinimetrically validated translations.<h4>Objective</h4>This study presents the formal process used to obtain the officially approved Portuguese version of the MDS-UPDRS.<h4>Methods</h4>The study consisted of three phases: (1) Independent translation by Portuguese and Brazilian teams followed by a challenging consensus process that this article particularly emphasizes; (2) Cogni2025-01-01T00:00:00Z2025 Jan2026-06-05T04:54:19.544Z2026-05-13T14:28:44.01ZS-EPMC117368793946097910.1002/mdc3.14236