Fact · Accessibility and health
44 to 88percent of people with Parkinson's disease
The American Speech-Language-Hearing Association estimates that dysarthria affects 44 to 88 percent of people with Parkinson's disease.
Checked against its source on October 16, 2026
In the source's own words
“dysarthria affects approximately 44%–88% of individuals with Parkinson’s disease”
Dysarthria in Adults, American Speech-Language-Hearing Association, American Speech-Language-Hearing Association, Practice Portal, n.d., Prevalence section.
Open the original- What it measures
- The range is pooled from several named studies of people with Parkinson's disease.
- What it does not show
- A wide range that depends on the study and how dysarthria was defined. Some reviews report higher figures, so treat the range as a rough guide rather than a precise rate.