Childhood apraxia of speech is a disorder of the nervous
system that affects the ability to sequence and say sounds,
syllables, and words. It is not due to muscular weakness or
paralysis. The problem is in the brain's planning to move the body
parts needed for speech (e.g., lips, jaw, tongue). The child knows
what he or she wants to say, but the brain is not sending the
correct instructions to move the body parts of speech the way they
need to be moved.
Signs of Childhood Apraxia of
Speech
In Very Young Children
The child:
- does not coo or babble as an infant
- produces first words after some delay, but these words
are missing sounds
- produces only a few different consonant sounds
- is unsuccessful at combining sounds
- simplifies words by replacing difficult sounds with
easier ones or by deleting difficult sounds (Although all
children do this, the child with developmental apraxia of speech
does so more often).
- may have feeding problems.
In Older Children
The child:
- makes inconsistent sound errors that are not the
result of immaturity
- can understand language much better than he or she can
produce it
- has difficulty imitating speech
- may appear to be groping when attempting to produce
sounds or to coordinate the lips, tongue, and jaw for purposeful
movement
- has more difficulty saying longer phrases than shorter
ones
- appears to be worse when he or she is anxious
- is hard for listeners to understand.
Some children may have other problems as well. These
problems can include weakness of the lips, jaw, or tongue; delayed
language development; other expressive language problems;
difficulties with fine motor movement; and problems with
oral-sensory perception (identifying an object in the mouth through
the sense of touch).
Assessment
In order to rule out hearing loss as a possible cause of
the child's speech production difficulties, an audiologist certified
by the American Speech-Language-Hearing Association (ASHA) should
perform a hearing evaluation. Use our “
Find a Professional ”
service to help locate an audiologist near you).An ASHA-certified speech-language pathologist (use our “
Find a Professional ”
service to help locate a provider near you) should examine the
child's speech mechanism. He or she assesses the muscle development
of his lips, jaw, and tongue, checking for signs of weakness or low
muscle tone (dysarthria). He or she evaluates the coordination of
the speech mechanism for purposeful movement by having the client
imitate non-speech actions (e.g., moving the tongue from side to
side, smiling, frowning, puckering the lips, etc.). The
speech-language pathologist will also evaluate the coordination and
sequencing of muscle movements for speaking by having the child
repeat strings of sounds (e.g., puh-tuh-kuh) as fast as possible.
The child's skills in functional or "real life" situations (e.g.,
licking a lollipop) will be compared to his or her skills in
non-functional or "pretend" situations (e.g., pretending to lick a
lollipop).
The child's intonation (the melody of speech) is also
important to evaluate, as some children with apraxia have
difficulties in this area. The speech-language pathologist will
listen to the child to make sure that he or she is able to
appropriately stress syllables in words and words in sentences. She
or he will also determine whether the child can use pitch and pauses
to mark different types of sentences (e.g., questions versus
statements) and to mark off different portions of the sentence
(e.g., to pause between the subject and the verb).
Speech articulation (pronunciation of
sounds in words) is evaluated, including both vowel and consonant
sounds. Along with pronunciation of individual sounds and combined
sounds (syllables and word shapes), overall intelligibility of the
child's speech is assessed, in single words as well as in
conversation.
The speech-language pathologist evaluates expressive and receptive language skills to determine if
speech difficulties are part of a larger language problem. The
speech-language pathologist also tries to determine the social
effects of the problem. For example, does the child refuse
to participate in classroom discussions because he or she is ashamed
of and/or frustrated by his or her speech?
Pre-reading or reading skills should also be addressed for
children who are 4-5 years old or above. Children with speech and
language disorders or delays are at higher risk of reading
problems.
Based on these findings, an appropriate plan for treatment
is developed.
Treatment
Intervention for the child diagnosed with apraxia of speech
often focuses on improving the planning, sequencing, and
coordination of motor movements for speech production. Exercises
that strengthen the oral muscles will not help. Childhood apraxia
of speech is a disorder of speech coordination, not strength. To
improve speech, the child must practice speech. However, feedback
from a number of senses, such as tactile "touch" cues and visual
cues (e.g., watching him/herself in the mirror or watching a visual
representation of some aspect of his or her speech on a computer
screen) as well as auditory feedback are often helpful. With this
feedback, the child repeats syllables, words, sentences and longer
utterances to improve muscle coordination and sequencing for speech.
If assessment reveals expressive and/or receptive language deficits,
or pre-reading or reading problems, treatment will include improving
these skill areas as well.
Some clients may be taught to use an augmentative or
alternative communication system (e.g., a portable computer that
writes and produces speech) if the apraxia significantly hinders
speech production. This communication system provides them with a
means to communicate their ideas when communication through speaking
is not a viable option. Once speech production is more effective,
the system is used less often or withdrawn completely. Our site has
more information on augmentative and alternative communication .
The client and his family are provided with home
assignments to accelerate progress and to facilitate carryover of
newly learned strategies outside of the treatment room.
One of the most important things for the family to remember
is that treatment of apraxia of speech takes time, commitment, and a
supportive environment that helps the child feel successful with
communication. Without this, the disorder can persist into adulthood
with years of speech-related anxiety and frustration.