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Amyotrophic Lateral Sclerosis

URL of this page: http://www.nlm.nih.gov/medlineplus/amyotrophiclateralsclerosis.html

Also called: Also called: ALS, Lou Gehrig's disease

Amyotrophic lateral sclerosis (ALS) is a nervous system disease that attacks nerve cells called neurons in your brain and spinal cord. These neurons transmit messages from your brain and spinal cord to your voluntary muscles - the ones you can control, like in your arms and legs. At first, this causes mild muscle problems. Some people notice

Eventually, you lose your strength and cannot move. When muscles in your chest fail, you cannot breathe. A ventilator can help, but most people with ALS die from respiratory failure.

The disease usually strikes between age 40 and 60. More men than women get it. No one knows what causes ALS. It can run in families, but usually it strikes at random. There is no cure. Medicines can relieve symptoms and, sometimes, prolong survival.

National Institute of Neurological Disorders and Stroke

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The primary NIH organization for research on Amyotrophic Lateral Sclerosis is the National Institute of Neurological Disorders and Stroke - http://www.ninds.nih.gov/

Date last updated: March 28 2009
Topic last reviewed: March 10 2009