What type of ALS is the most common?

Written by Marisa Wexler, MS |

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What type of ALS is the most common?

Category: ALS Types

About 90% of people with amyotrophic lateral sclerosis (ALS) have sporadic disease, meaning that the affected individual does not have a family history of ALS. Another common type, affecting around two-thirds of patients, is limb-onset ALS, in which individuals first experience symptoms that affect muscles in the arms or legs.

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About the Author

Marisa Wexler, MS Marisa holds a Master of Science in cellular and molecular pathology from the University of Pittsburgh, where she studied novel genetic drivers of ovarian cancer. Her areas of expertise include cancer biology, immunology, and genetics, and she has worked as a science writing and communications intern for the Genetics Society of America.


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