Dysarthria is a speech problem caused by a weakness or a lack of control over muscles in the face, mouth, and respiratory system. Dysarthria may be congenital (present at birth) such as cerebral palsy or the result of a stroke or brain injury. A person who has dysarthria knows which words to use, but may not be able to make the right sounds.
The signs of dysarthria vary with each person. A person with dysarthria may show some or all of the signs listed below.
Make certain sounds
Speak whole sentences clearly
Control his or her tone of voice, volume, or breaks between words
Realize his or her speech is hard to understand
Control his or her saliva
Speak certain sounds louder than others
Sound harsh or raspy during speech
Pause for breath in the wrong places
Drop or slur parts of words
Speak slowly or in a way that sounds hesitant or halting