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Early ALS symptoms, such as muscle cramping, twitching, or weakness, are often subtle and go undetected. But as this eMedTV segment explains, the symptoms of ALS get worse over time, leading to problems with movement, speech, and breathing.
Amyotrophic lateral sclerosis is a progressive neurological disorder that destroys the neurons controlling voluntary muscles. This page of the eMedTV website takes an in-depth look at amyotrophic lateral sclerosis and explains how motor neurons work.