April 29th, 2010
05:05 PM ET

What is ALS?

The ALS Association

[cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2010/images/04/29/als.web.jpg]

Amyotrophic lateral sclerosis (ALS), often referred to as "Lou Gehrig's Disease," is a progressive neurodegenerative disease that affects nerve cells in the brain and the spinal cord.

With voluntary muscle action progressively affected, patients in the later stages of the disease may become totally paralyzed.


Filed under: 360° Radar • Medical News
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