1. Health
Send to a Friend via Email

What is Muscle Rigidity?


Updated March 03, 2009

Definition: Muscle rigidity is a condition in which both the active and passive movements of a joint are restricted because of the abnormal, involuntary contraction of one or more muscles.
Rigidity is a common symptom in Parkinson disease
Related Video
How to Reduce the Risk of SIDS

©2014 About.com. All rights reserved.

We comply with the HONcode standard
for trustworthy health
information: verify here.