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amyotrophic lateral sclerosis

amyotrophic lateral sclerosis definition - medical

a·my·o·troph·ic lateral sclerosis (ā-mīˌə-trŏfˈĭk, -trōˈfĭk)

noun
A disease of the motor tracts of the lateral columns and anterior horns of the spinal cord, causing progressive muscular atrophy, increased reflexes, fibrillary twitching, and spastic irritability of muscles. Also called Charcot's disease, Lou Gehrig's disease.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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