Symptoms – Rigidity
Written by: Emily Downward | Last reviewed: March 2017
- Parkinson’s Disease Foundation. Accessed online on 12/15/16 at http://www.pdf.org/ symptoms_primary.
- Parkinson’s UK. Accessed online on 12/16/16 at https://www.parkinsons.org.uk/content/rigidity-parkinsons.
- Parkinson’s Disease. NIH Publication No. 15-139. Dec 2014. National Institute of Neurological Disorders and Stroke, National Institutes of Health.
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- Michael J. Fox Foundation for Parkinson’s Research. Accessed online on 12/15/16 at https://www.michaeljfox.org/.