In short: Childhood apraxia of speech (CAS) is a rare speech condition where the brain has trouble *planning* the movements needed for speech. Children with CAS know what they want to say but find it hard to make their mouth produce the words. With the right, intensive speech therapy, children can make real progress.
What is childhood apraxia of speech?
CAS is a movement-based speech problem that starts in childhood. It's not caused by weak muscles or by the child not knowing words — the difficulty is in the *planning and sequencing* of the mouth movements for speech. It's sometimes called developmental verbal dyspraxia.
Children with CAS usually:
- Know what they want to say
- Can move their face and mouth well for eating and facial expressions
- Find it hard to say words clearly and consistently
What are the signs of CAS?
CAS can look different from other speech difficulties. Possible signs include:
- Speech that's very hard to understand
- Saying the same word differently each time (inconsistency)
- Groping or visibly searching for mouth positions
- Trouble especially with longer or more complex words
- Speech that can sound choppy, robotic or have unusual stress and rhythm
These signs overlap with other conditions, so a proper assessment is essential.
How is CAS diagnosed?
A speech pathologist with experience in CAS can assess and diagnose it. Careful assessment is needed. The speech pathologist listens to the child's speech across several tasks, looks for the key features of CAS, and also checks hearing, mouth movements and how the child communicates overall. Because CAS is often confused with other speech difficulties, an experienced assessment matters.
How is CAS treated?
Treatment often involves frequent, individual speech therapy that focuses on practising the movements for speech. There are several evidence-based approaches, and a speech pathologist will choose and tailor one to your child. Treatment is usually more intensive and longer-term than for some other speech difficulties, and many children make strong gains in being understood with the right support.
How can we help?
Our speech pathology service assesses and supports children with complex speech difficulties across Melbourne's west. You can check your eligibility, make a referral, or contact our team — support is available in several languages.
Frequently Asked Questions
What is childhood apraxia of speech?
Childhood apraxia of speech (CAS) is a rare speech condition where the brain has difficulty planning the movements needed for speech. The child knows what they want to say and can move their mouth for eating, but finds it hard to produce words clearly and consistently.
How is CAS different from other speech difficulties?
Unlike difficulties caused by weak muscles or not knowing sounds, CAS is about *planning* speech movements. A key sign is inconsistency — saying the same word differently on different attempts. An experienced speech pathologist assesses whether CAS or another difficulty explains the speech pattern.
Who can diagnose childhood apraxia of speech?
A speech pathologist diagnoses CAS by assessing the child's speech across several tasks and listening for its key features, as well as checking hearing and mouth movements. Because CAS is easily confused with other speech difficulties, experienced assessment is important.
Can children with CAS learn to speak clearly?
Many children with CAS make significant progress with frequent, individualised speech therapy. Treatment is usually more intensive and longer-term than for some other speech difficulties, and focuses on practising the movements for speech.
What kind of therapy helps CAS?
Treatment often uses regular, one-to-one speech therapy that targets the planning and production of speech movements, using evidence-based approaches. A speech pathologist selects and tailors the approach to your child's needs.
Trusted sources for further reading
- Speech Pathology Australia — Childhood Apraxia of Speech fact sheet
- Better Health Channel — Childhood apraxia of speech
- The Royal Children's Hospital — Childhood Apraxia of Speech
This article is general information only and does not replace individual professional advice. If you're worried about your child's speech, please speak with a qualified speech pathologist or your GP.
