Hoehn and Yahr Scale

Subject: Hoehn and Yahr Scale

Date: 4/26/2004

0 - No visible symptoms of Parkinson's disease

1 - Symptoms on only one side of the body

2 - Symptoms on both sides of the body and no difficulty walking

3 - Symptoms on both sides of the body and minimal difficulty walking

4 - Symptoms on both sides of the body and moderate difficulty walking

5 - Symptoms on both sides of the body and unable to walk

This scale is a modified version of the scale published by Drs. Hoehn and Yahr in: Hoehn MM, Yahr MD. Parkinsonism: onset, progression and mortality. Neurology. 1967;17:427-442.