WebMD
Font Size
A
A
A

Pressure on the nerve root (impingement)

Illustration copyright 2000 by Nucleus Communications, Inc. All rights reserved. http://www.nucleusinc.com

Often a herniated disc by itself does not cause pain. Pain occurs when the membrane on the outside of the spinal cord or spinal nerves is irritated. Loss of function, such as weakness or altered sensation, can be caused by pressure from the herniated disc on the nerve roots or spinal cord. Pain or numbness may occur in the area of the body to which the nerve travels.

Primary Medical Reviewer William M. Green, MD - Emergency Medicine
Specialist Medical Reviewer Robert B. Keller, MD - Orthopedics
Last Updated July 21, 2008

WebMD Medical Reference from Healthwise

Last Updated: July 21, 2008
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
© 1995-2008 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.