Speech Problems in Multiple Sclerosis | MS Association of America
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Home > About MS > What are the Symptoms of MS? > Speech Difficulties
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Speech Difficulties

From a neurological perspective, speech abnormalities may be due to a disturbance of primary language function (aphasia) or due to mechanical disturbances of word formation (dysarthria). With aphasia, an individual may partially or fully lose the ability to communicate verbally or with written words, either temporarily or permanently, and this may be related to a loss of memory. With dysarthria, an individual will have difficulties speaking due to reduced control of muscles, often a result of nerve damage.

Speech disturbances in MS typically result from dysarthria, with true aphasia to be uncommon in my experience. Disturbances of the nerve supply that weaken the muscles of the lower face, lips, tongue, and throat can result in dysarthria. These are due to lesions in the brainstem, a part of the nervous system between the brain and cervical spinal cord.

More commonly, multiple small lesions in either of the two large lobes of the brain, known as the cerebral hemisphere, result in poor motor control and coordination of these muscles. Slurring and slowness of speech, with altered pronunciation, characterize dysarthria.

"Scanning speech," characterized by long pauses between syllables and words with loss of melody in speech production, is another type of dysarthria. The term "explosive speech" is sometimes used to describe intermittent episodes of loud, rapid speech production. These dysarthrias are attributed to lesions in the cerebellum, located in the lower-back region of the brain. Coordination between the muscles of articulation and exhalation, necessary for volume control, appears faulty in these dysarthrias. Speech pathologists are usually consulted to help manage these problems by training and coaching the patients to compensate for the deficits.

Some exercises can strengthen and improve the muscles involved in the production of speech, or improve breathing through relaxation of the affected muscles. A speech-language therapist can teach techniques to help slow speech so that it is more understandable, as well as techniques such as improving the way words are articulated and correctly pausing between words. One technique that is particularly helpful is to listen to your own voice using a tape recorder.

When speech difficulties are severe and cannot be corrected with exercise or speech modification, alternative means of speech production can restore the ability to communicate. These range from technology that amplifies the voice, to alternative communication systems such as computer boards.

No medications can specifically improve speech difficulties. However, medications that relieve symptoms such as spasticity may provide some improvement.

By Donald A. Barone, DO
Associate Professor and Chief
Division of Neurology, Rowan University School of Osteopathic Medicine
Director, MS Center of South Jersey


This content originally appeared in the Summer/Fall 2013 issue of The Motivator.

For commonly prescribed symptom-management treatments, please see our full listing of symptom-management medications.
Last Updated on Thursday, 30 July 2015 13:45