This site is intended for healthcare professionals

CPD
CPD
Pro
Pro
Sign in
Go to /sign-in page

You can view 5 more pages before signing in

Go to /pro/cpd-dashboard page

This page is worth 0.05 CPD credits. CPD dashboard

Go to /account/subscription-details page

This page is worth 0.05 CPD credits. Upgrade to Pro

Cogwheel rigidity

Authoring team

Cog-wheel rigidity is the phrase used to describe the feeling of periodic resistance to passive movement felt by the examiner in a parkinsonian limb. The phenomenon may be unilateral initially.

The cog-wheeling is in fact a tremor superimposed on lead pipe rigidity - the teeth of the cog are analogous to the tensed parts of the tremor.

Reference

  1. Sveinbjornsdottir S; The clinical symptoms of Parkinson's disease. J Neurochem. 2016 Oct;139 Suppl 1:318-324.

Related pages

Create an account to add page annotations

Create a free account

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.