Is Down Syndrome Apraxia?

By Pam Marshalla

Management of Motor Speech Disorders - YorksonQ: Everyone seems to say that kids with Down Syndrome have apraxia. Is this right? Shouldn’t it be dysarthria?

Any client with a speech problem and neuromuscular disorder has dysarthria.  Period.  That is the very definition of dysarthria.

Dysarthria is a non-linguistic, neuromuscular disorder of expressive speech, characterized by impaired capacity to execute speech movements.

Dysarthria defines a group of motor speech disorders that includes clients with muscle tone disturbance–– Low tone, high tone, mixed tone, fluctuating tone;

It includes client with cerebral palsy, Down syndrome, cerebellar disorders, muscular dystrophy, Parkinson’s disease, multiple sclerosis, fetal alcohol syndrome, etc.

Many therapists and researchers in our field label Down syndrome as apraxia but this is not correct.  Down syndrome is Dysarthria and Mental Retardation.  (I know that MR is a politically incorrect phrase, but I don’t care. We need this term.)

Please see the other Q&A’s specific to Down syndrome in this blog for speech recommendations.

Good Textbooks on Dysarthria

  1. Darley, F. L., & Aronson, A. E., & Brown, J. R. (1975). Motor Speech Disorders. Philadelphia: W. B. Saunders.
  2. Duffy, J. R. (1995). Motor Speech Disorders: Substrates, Differential Diagnosis, and Management. St. Louis: Mosby.
  3. Yorkson, K. M., & Beukelman, D. R., & Strand, E. A., & Bell, K. R. (1999). Management of Motor Speech Disorders in Children and Adults. Austin: Pro-Ed.

2 thoughts on “Is Down Syndrome Apraxia?”

  1. Is it possible that a Downs Syndrome child has BOTH dysarthria and apraxia? I work with a 15 year old Downs Syndrome girl and although she does demonstrate characteristics of dysarthria, I believe she also demonstrates difficulty with the motor planning and execution of sounds and sound sequences, which I thought was the hallmark of apraxia.

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