Hoehn and Yahr scale
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The Hoehn and Yahr scale is a commonly used system for describing how the symptoms of Parkinson's disease progress. The scale allocates stages from 0 to 5 to indicate the relative level of disability.
- Stage one: Symptoms on one side of the body only.
- Stage two: Symptoms on both sides of the body. No impairment of balance.
- Stage three: Balance impairment. Mild to moderate disease. Physically independent.
- Stage four: Severe disability, but still able to walk or stand unassisted.
- Stage five: Wheelchair-bound or bedridden unless assisted.
[edit] References
- Hoehn M, Yahr M (1967). "Parkinsonism: onset, progression and mortality.". Neurology 17 (5): 427–42. PMID 6067254.
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