What is the maximum UPDRS total score?

The maximum composite score across all four parts is 199 (Part I: 16, Part II: 52, Part III: 108, Part IV: 23). Higher scores indicate greater disease burden.

What does a high Part III motor score mean?

Part III (Motor Examination) scores above 32 are generally considered indicative of moderate motor impairment. Scores above 58 suggest severe motor dysfunction, though clinical context always matters.

How does UPDRS differ from MDS-UPDRS?

The MDS-UPDRS (Movement Disorder Society revision) expands Part I to include non-motor experiences of daily living and adds more nuanced rating anchors. This tool implements the original UPDRS, which remains in widespread clinical use.

Is this tool a substitute for clinical examination?

No. UPDRS Part III requires direct patient observation by a trained examiner. This calculator assists with scoring and aggregation but cannot replace clinical judgment or in-person assessment.

Can I use this for research documentation?

Yes. The tool computes standard UPDRS subscale and total scores consistent with published scoring conventions and is suitable for documenting research assessments.

UPDRS Helper

Rate the original UPDRS items across all four parts to get instant subscale totals and a composite Parkinson's disease severity score.

Part I

0/16

Part II

0/52

Part III

0/108

Part IV

0/23

Part I — Mentation, Behavior, and Mood

Rate each item 0 (normal) to 4 (severe). Maximum: 16.

Summary

The Unified Parkinson's Disease Rating Scale (UPDRS) evaluates Parkinson's disease across four domains: mentation, activities of daily living, motor examination, and therapy complications. Parts I–III use 0–4 item ratings. Part IV combines 0–4 duration/severity ratings with yes/no items according to the original scale. This tool computes subscale totals and a composite score to support clinical documentation and longitudinal tracking.

How it works

Work through each UPDRS part using the tabs above.
For every item, select a rating from 0 (normal/absent) to 4 (severe).
Subscale totals update automatically as you rate each item.
Switch to the Results tab to view all subscale scores and the composite total.
Use the Reset button to clear all ratings and start a new assessment.

Use cases

Structured bedside or clinic assessment of Parkinson's disease severity.
Longitudinal tracking of motor and non-motor symptom progression.
Pre- and post-treatment comparison after medication adjustment or DBS.
Medical education and training on Parkinson's disease evaluation.
Research documentation and standardized patient scoring.

Frequently Asked Questions

Last updated: 2026-06-18 · Reviewed by Nham Vu

UPDRS Helper

Part I — Mentation, Behavior, and Mood

Part II — Activities of Daily Living

Part III — Motor Examination

Part IV — Complications of Therapy

Score Summary

Summary

How it works

Use cases

Frequently Asked Questions

UPDRS Helper

Use the UPDRS Helper

Part I — Mentation, Behavior, and Mood

Part II — Activities of Daily Living

Part III — Motor Examination

Part IV — Complications of Therapy

Score Summary

Summary

How it works

Use cases

Frequently Asked Questions