How common is dysarthria?

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How common is dysarthria?

Researchers don’t know exactly how common dysarthria is. It is more common in people who have certain neurological conditions, such as:

  • Amyotrophic lateral sclerosis (ALS): Up to 30% of people with ALS (Lou Gehrig’s disease) have dysarthria.
  • Multiple sclerosis (MS): Around 25% to 50% of people with MS get dysarthria at some point.
  • Parkinson’s disease: Dysarthria affects 70% to 100% of people with Parkinson’s disease.
  • Stroke: About 8% to 60% of people with stroke have dysarthria.
  • Traumatic brain injury: Some 10% to 65% of people with traumatic brain injury have dysarthria.

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