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Table 2 Scales used in diagnosis of PD symptoms

From: The impact of clinical scales in Parkinson’s disease: a systematic review

Scale name Range/features Problems
UPDRS Subscale Part-I Includes mentation, mood and behavior
Range from 0 (normal) to 16 (each item graded from 0 to 4)
Intellectual impairment Motivation/initiative
Thought disorder Depression
UPDRS Subscale Part-II Self-evaluation of activities of daily living
Range 0 to 52 (Each item scored from 0 to 4)
Using utensils and cutting food Getting into bed and fixing the bedclothes
Drooling Drop-down
Swallowing Steady
Handwriting Walking
Voice or speaking Right arm tremor
Habiliment Left arm tremor
Sanitation Sensory difficulties
UPDRS Subscale Part-III Evaluation of motor functions
Range 0 to 108
27 items ( each item grades from 0 to 4)
Items 1 to 5 (resting tremor) Item 23 (arising from a chair)
Items 6 and 7 (action tremor) Item 24 (posture)
Items 8 to 12 (Stiffness) Item 25 (gait)
Items 13 and 20 (Bradykinesia) Item 26 (postural stability)
Item 21 and 22 (speech and facial expressions) Item 27 (body bradykinesia)
UPDRS Subscale Part-IV Used for complications of therapy
Range items from 32 to 35 for dyskinesia
Items 36 to 39 for motor/ clinical fluctuations
Items 40 to 42 for intestinal, autonomic, and sleep problems
Item 32 (Duration of dyskinesia) Item 38 (Undetermined-OFF)
Item 33 (Disability) Item 39 (Time OFF)
Item 34 (Pain) Item 40 (Gastrointestinal problems)
Item 35 (Early Morning) Item 41 (Sleep Disturbances)
Item 36 (Predictability) Item 42 (Orthostasis)
Item 37 (Unpredictable OFF)  
HY Part-V [13] Sub-Part of UPDRS Scale Stage-0 No indication of disease
Stage-1 Side effects on one side just (one-sided)
Stage-1.5 Side effects one-sided and also including the neck and spine
Stage-2 Indications on the two sides but no disability of balance
Stage-2.5 Gentle side effects on the two sides, with when the ‘pull' test is performed (the specialist stands behind the individual and requests that they keep up their balance when pulled in reverse)
Stage-3 Impairment of balance, gentle to moderate disease, physically independent
Stage-4 Extreme inability, but still at the same time ready to move or balance without assistance
Stage- 5 Requiring a bed-rest or wheel-chair if assisted
Part-VI [30]
Range 0–100%
Demonstrates the ‘Schwab and England' method for determining independency on everyday living activities under ON/OFF states
Higher scores indicate to better useful independency
100% Totally independent, efficient to do all activities without gradualness, trouble or disability
90% Totally independent, efficient to do all exercises with some slowness, trouble or impairment, Activities may take double time as long to finish
80% Many drills are self-contained, although certain tasks take double time, Aware of potential problems and a desire to slow down
70% Not entirely self-sufficient, more problems with activities that can take three to multiple times as long, may take enormous part of day for tasks
60% Can do most exercises, but very slowly and with much exertion, however a few tasks are unthinkable
50% More reliant, Help needed with half of tasks, Trouble with everything
40% Very needy, can help with all activities but can manage few alone
30% With exertion, occasionally do a couple of tasks alone or starts alone, much assistance require
20% No task can do alone; can help in some slight with some chores. Severe invalid
10% Helpless and completely dependent on caretaker
0% Vegetative controls like swallowing, bladder and bowel functions
  1. UPDRS Unified Parkinson Disease Rating Scale, HY Hoehn and Yahr Scale, SEADL Schwab and England Activities of daily living