What causes aphasia?
Aphasia is most often caused by stroke. Any disease or damage to the parts of the brain that control language can cause aphasia. These include traumatic brain injury, dementia, illness, and other progressive neurological disorders.
How common is aphasia?
ASHA has prepared a report - "Incidence and Prevalence of Speech, Voice, and Language Disorders in Adults in the United States: 2007 Edition" - that includes information about how many individuals experience aphasia each year. Additional information is included in the report "Communication Facts: Special Populations: Stroke."
The ASHA Leader articles and additional resources
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