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Jay,

I copied this of a Web site It gives an older form of classification The
Unified Scale is more complete but also more complex. However it doesn't
entirely answer your question. Since PD progresses in different rates in
different individuals-  the duration that one is in a particular stage
can vary greatly.

Charlie

Hoehn and Yahr Staging of Parkinson's Disease

     1.Stage One
        1.Signs and symptoms on one side only
        2.Symptoms mild
        3.Symptoms inconvenient but not disabling
        4.Usually presents with tremor of one limb
        5.Friends have noticed changes in posture,locomotion and facial
expression
   2.Stage Two
        1.Symptoms are bilateral
        2.Minimal disability
        3.Posture and gait affected
   3.Stage Three
        1.Significant slowing of body movements
        2.Early impairment of equilibrium on walking or standing
        3.Generalized dysfunction that is moderately severe
   4.Stage Four
        1.Severe symptoms
        2.Can still walk to a limited extent
        3.Rigidity and bradykinesia
        4.No longer able to live alone
        5.Tremor may be less than earlier stages
   5.Stage Five
        1.Cachectic stage
        2.Invalidism complete
        3.Cannot stand or walk
        4.Requires constant nursing care

This rating system has been largely supplanted by the Unified
Parkinson's Disease Rating Scale, which is much more
complicated. Details about UPDRS can be found through the American
Academy of Neurology


Jay A. Henkelman wrote:
>
> Can someone please shed some light on the difference between "early"
> Parkinsons
> verses "advanced".  Are there particular symptoms that constitute
> advanced
> rather than early PD?  Are we talking about the same symptoms but
> various
> degrees of impairment or different/additional manifestations?  I
> realize
> the issue has many variables but at what point...................?
>
> Thanks-
>
> Jay Henkelman

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CHARLES T. MEYER, M.D.
Middleton, WI
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