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Amyotrophic Lateral Sclerosis Definition
Common names:
  • ALS
  • Amyotrophic Lateral Sclerosis
  • Lou Gehrig Disease
  • Muscle Weakness due to ALS
  • Primary Lateral Sclerosis
  • Weakness due to ALS
A person with amyotrophic lateral sclerosis has worsening muscle weakness, caused by a malfunction in the nerves that stimulate the muscles to move. Images

The cause for amyotrophic lateral sclerosis is unknown. Amyotrophic lateral sclerosis gradually destroys the nerves that stimulate the muscles to move. Amyotrophic lateral sclerosis is most common in those over 40 years old.

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Last Updated: Sep 13, 2008  References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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