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Dysarthria is a motor-speech disorder. It happens when you can’t coordinate or control the muscles used for speech production in your face, mouth, or respiratory system. It usually results from a brain injury or neurological condition, such as a stroke.
People with dysarthria have difficulty controlling the muscles used to make normal sounds. This disorder can affect many aspects of your speech. You may lose the ability to pronounce sounds correctly or speak at a normal volume. You may be unable to control the quality, intonation, and pace at which you speak. Your speech may become slow or slurred. As a result, it may be difficult for others to understand what you’re trying to say.
The specific speech impairments that you experience will depend on the underlying cause of your dysarthria. If it’s caused by a brain injury, for example, your specific symptoms will depend on the location and severity of the injury.
Symptoms of dysarthria can range from mild to severe. Typical symptoms include:
Many conditions can cause dysarthria. Examples include:
Dysarthria can affect both children and adults. You’re at higher risk of developing dysarthria if you:
If they suspect you have dysarthria, your doctor may refer you to a speech-language pathologist. This specialist can use several examinations and tests to assess the severity and diagnose the cause of your dysarthria. For example, they will evaluate how you speak and move your lips, tongue, and facial muscles. They may also assess aspects of your vocal quality and breathing.
After your initial examination, your doctor may request one or more of the following tests:
Your doctor’s recommended treatment plan for dysarthria will depend on your specific diagnosis. If your symptoms are related to an underlying medical condition, your doctor may recommend medications, surgery, speech-language therapy, or other treatments to address it.
For example, if your symptoms are related to the side effects of specific medications, your doctor may recommend changes to your medication regimen.
If your dysarthria is caused by an operable tumor or lesion in your brain or spinal cord, your doctor may recommend surgery.
A speech-language pathologist may be able to help you improve your communication abilities. They may develop a custom treatment plan to help you:
Dysarthria can be caused by numerous conditions, so it can be hard to prevent. But you can reduce your risk of dysarthria by following a healthy a lifestyle that lowers your chance of stroke. For example:
Your outlook will depend on your specific diagnosis. Ask your doctor for more information about the cause of your dysarthria, as well as your treatment options and long-term outlook.
In many cases, working with a speech-language pathologist may help you improve your ability to communicate. For example, the American Speech-Language-Hearing Association reports that about two-thirds of adults with central nervous system disease can improve their speech skills with the help of a speech-language pathologist.
Written by: Anna Zernone Giorgi
Medically reviewed on: Nov 28, 2016: Sara Minnis, MS, CCC-SLP
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