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Hoehn & Yahr

Parkinson's disease staging

Grade 0

No visible symptoms of Parkinson's disease

Grade 1

Symptoms on only one side of the body

Grade 2

Symptoms on both sides of the body and no difficulty walking

Grade 3

Symptoms on both sides of the body and minimal difficulty walking

Grade 4

Symptoms on both sides of the body and moderate difficulty walking

Grade 5

Symptoms on both sides of the body and unable to walk

Reference


1. Hoehn MM, Yahr MD. Parkinsonism: onset, progression, and mortality. Neurology. 1967; 17:427–42.

2. Goetz CG, Poewe W, Rascol O, et al. Movement disorder society task force report on the Hoehn and Yahr staging scale: status and recommendations. Mov Disord. 2004;19:1020–8.


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