Hoehn and Yahr scale

The Hoehn and Yahr scale is used to assess the severity of Parkinson's disease . It is easy to collect and widely used. Postural instability is used as a key factor in assessing the disability, other motor and non-motor factors are not relevant. The stage according to Hoehn and Yahr is part of the Unified Parkinson's Disease Rating Scale (UPDRS).

The scale was published in Neurology in 1967 by Margaret M. Hoehn and Melvin D. Yahr .

Degree	Hoehn and Yahr scale
I.	Unilateral symptoms with no or only slight functional disability
II	Bilateral symptoms, no postural instability
III	Bilateral symptoms, minor to moderate disability with slight postural instability, still physically independent
IV	Severe handicap, patient but able to stand and walk without help
V	Tied to a wheelchair or bed without assistance

literature

W. Poewe, G. Wenning, K. Bürk: Scales for assessing the degree of severity and impairment of movement disorders. In: G. Deuschl, W. Ortel, W. Poewe: Parkinson syndrome and other movement disorders. Thieme, 2011, ISBN 9783131487810 , pp. 587f.
CG Goetz, W. Poewe, O. Rascol, C. Sampaio, GT Stebbins, C. Counsell, N. Giladi, RG Holloway, CG Moore, GK Wenning, MD Yahr, L. Seidl, Movement Disorder Society Task Force on Rating Scales for Parkinson's Disease: Movement Disorder Society Task Force report on the Hoehn and Yahr staging scale: status and recommendations. In: Mov. Disorders 19, 2004, pp. 1020-1028, PMID 15372591 , doi : 10.1002 / mds.20213 .

Individual evidence

↑ CG Goetz, W. Poewe, O. Rascol, C. Sampaio, GT Stebbins, C. Counsell, N. Giladi, RG Holloway, CG Moore, GK Wenning, MD Yahr, L. Seidl, Movement Disorder Society Task Force on Rating Scales for Parkinson's Disease: Movement Disorder Society Task Force report on the Hoehn and Yahr staging scale: status and recommendations. In: Mov. Disorders 19, 2004, pp. 1020-1028, PMID 15372591 .
↑ MM Hoehn, MD Yahr: Parkinsonism: onset, progression and mortality. In: Neurology. 17, 1967, pp. 427-442, PMID 6067254 , doi : 10.1002 / mds.20213 .

[PMID15372591-1] CG Goetz, W. Poewe, O. Rascol, C. Sampaio, GT Stebbins, C. Counsell, N. Giladi, RG Holloway, CG Moore, GK Wenning, MD Yahr, L. Seidl, Movement Disorder Society Task Force on Rating Scales for Parkinson's Disease: Movement Disorder Society Task Force report on the Hoehn and Yahr staging scale: status and recommendations. In: Mov. Disorders 19, 2004, pp. 1020-1028, PMID 15372591 .

[PMID6067254-2] MM Hoehn, MD Yahr: Parkinsonism: onset, progression and mortality. In: Neurology. 17, 1967, pp. 427-442, PMID 6067254 , doi : 10.1002 / mds.20213 .