Specialty Service
Motor Speech Disorders
Restoring speech clarity and strength for individuals with dysarthria and other motor speech conditions caused by neurological injury or disease.
Understanding the Condition
What are motor speech disorders?
Motor speech disorders are a group of conditions that affect the muscles and neural pathways responsible for producing speech. Unlike language disorders (which affect the ability to find words and form sentences), motor speech disorders affect the physical ability to move the muscles of the face, tongue, palate, vocal cords, and respiratory system in the precise, coordinated way needed for clear, natural-sounding speech.
Dysarthria is the most common motor speech disorder. It results from weakness, slowness, or incoordination of the speech muscles due to neurological damage. Dysarthria can affect speech rate, loudness, voice quality, articulation precision, and resonance. The type and severity depend on which part of the nervous system is affected. Common causes include stroke, traumatic brain injury, cerebral palsy, Parkinson's disease, multiple sclerosis, ALS, and brain tumors.
Apraxia of speech is another motor speech disorder, but it involves difficulty with the planning and programming of speech movements rather than muscle weakness. Apraxia is covered in detail on our Apraxia of Speech page.
Motor speech disorders can range from mild (slightly imprecise speech) to severe (unintelligible speech). They can be stable (as in cerebral palsy), improving (as in stroke recovery), or progressive (as in ALS or Parkinson's disease). Treatment is tailored to the underlying cause, current severity, and the individual's functional communication needs.
Signs & Symptoms
What to look for
- Slurred, mumbled, or imprecise speech that is difficult to understand
- Speaking too slowly or too quickly
- Reduced vocal loudness — speech that is too quiet for others to hear easily
- Monotone speech with limited pitch variation and reduced expressiveness
- Breathy, hoarse, or strained voice quality
- Difficulty controlling the rate and rhythm of speech
- Hypernasality — too much air escaping through the nose during speech
- Weakness or reduced movement of the facial muscles, tongue, or soft palate
- Drooling or difficulty managing saliva
- Fatigue during extended speaking, with speech becoming less clear over time
Our Approach
How we treat motor speech disorders
SPEAK OUT! Program
An evidence-based speech therapy program specifically designed for individuals with Parkinson's disease. SPEAK OUT! uses a unique combination of speech exercises, cognitive engagement, and daily practice to improve vocal loudness, clarity, and communication confidence.
Articulation Strengthening & Precision
Exercises and drills targeting the specific speech muscles affected — tongue, lips, jaw, and soft palate — to improve the precision, strength, and range of movement needed for clear speech production.
Respiratory-Phonatory Training
Building breath support for speech, improving vocal loudness and projection, and coordinating breathing with speaking. This is essential for individuals whose reduced volume makes them difficult to hear.
Rate and Prosody Training
Strategies for controlling speech rate, using natural pausing, and restoring the melody and expressiveness of speech. This helps speech sound more natural and makes it easier for listeners to follow.
For individuals with progressive conditions like Parkinson's disease or ALS, we focus on maximizing current abilities, teaching compensatory strategies, and planning for future communication needs — including AAC evaluation when appropriate. Our goal is to keep you communicating effectively at every stage.
Who We Help
Primarily adults
Motor speech disorders are most commonly seen in adults following stroke, traumatic brain injury, or as part of a neurological condition such as Parkinson's disease, multiple sclerosis, or ALS. We also treat children with dysarthria related to cerebral palsy or other neurological conditions.
Whether you are in the early stages of recovery from a stroke, managing the speech changes that come with Parkinson's, or adapting to a progressive condition, our clinicians bring specialized expertise in neurological speech rehabilitation. We work with your medical team to provide coordinated, comprehensive care.
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Experiencing changes in your speech clarity or volume? Contact us for an evaluation and a personalized treatment plan to help you communicate with confidence.