Signs of Childhood Apraxia of Speech (CAS)
The short answer
Childhood apraxia of speech (CAS) is a motor speech disorder where the brain has difficulty coordinating the movements needed for speech. Signs include inconsistent sound errors, difficulty imitating words, limited babbling as a baby, and groping mouth movements when trying to speak. CAS requires specialized speech therapy with a therapist experienced in motor speech disorders. Early diagnosis and intensive therapy lead to the best outcomes.
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By Age
What to expect by age
Early signs may include very limited babbling, few consonant sounds, and delayed cooing. Some babies with CAS are very quiet overall. These early signs are subtle and are often only recognized in retrospect after a later diagnosis.
Children who will later be diagnosed with CAS often have very few or no words at this age. They may have limited babbling variety and difficulty imitating sounds. First words may be significantly delayed.
Key warning signs include having few or no words, a gap between what the child understands and what they can say, and visible struggle or groping when trying to produce words. The child may seem to know what they want to say but cannot coordinate the movements.
CAS becomes more identifiable as speech demands increase. Characteristic signs include inconsistent errors on the same word, difficulty with longer words, loss of words that were previously used, and vowel distortions. A speech evaluation with a specialist in motor speech disorders is recommended.
CAS can be more reliably diagnosed at this age. Intensive, frequent speech therapy with a focus on motor planning is the gold standard treatment. Children with CAS benefit from therapy multiple times per week. Progress may be slower than with other speech disorders, but with consistent therapy, significant improvement is possible.
What Should You Do?
When to take action
- Your toddler makes typical speech errors that are consistent and follow predictable patterns
- Your child makes errors but can consistently repeat words the same way each time
- Your child's speech errors are improving steadily with age
- Your child has a few sound errors but overall speech development is on track
- Your child says the same word differently each time they try (inconsistent errors)
- Your child seems to struggle or grope with their mouth when trying to talk
- Your child had very limited babbling as a baby and now has very few words
- There is a large gap between what your child understands and what they can say
- Your child was using words and has lost them, combined with difficulty producing speech sounds
- Your child is over 2 with almost no words, visible struggle when trying to speak, and strong comprehension
Sources
Related Resources
Trust your instincts. If something feels wrong, reach out to your pediatrician.
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Related Speech Concerns
Toddler Has Multiple Speech Sound Errors
A speech sound disorder involves difficulty producing speech sounds correctly, making a child harder to understand than expected for their age. While individual sound errors are common in toddlers, having many sound errors that significantly reduce intelligibility may indicate a speech sound disorder that benefits from speech therapy. Early evaluation and treatment lead to the best outcomes.
My Child Is a Late Talker
Late talkers are children who have fewer than 50 words or aren't combining words by age 2, but are developing normally in other areas. About half of late talkers catch up on their own by age 3, but the other half go on to have lasting language delays. Early evaluation and speech therapy can make a big difference, so it's worth acting even if you're told to "wait and see."
Toddler Has Weak Mouth Muscles for Speech
Oral motor weakness affects the muscles of the lips, tongue, jaw, and cheeks, which can impact both feeding and speech. Signs include excessive drooling past age 2, difficulty chewing, messy eating, and unclear speech. If you notice these signs together, a speech-language pathologist who specializes in oral motor skills can evaluate and provide targeted exercises.
Accent vs Speech Disorder in Bilingual Toddlers
When toddlers grow up hearing more than one language, they naturally blend sounds, patterns, and accents from both languages. This is normal and healthy, not a speech disorder. A bilingual child may pronounce some sounds differently than monolingual peers because they are learning the sound systems of two languages simultaneously. True speech disorders affect both languages equally, while accent influence appears only in specific sounds borrowed from one language to another.
Ear Fluid Affecting Baby's Speech Development
Chronic or recurrent middle ear fluid (otitis media with effusion) can temporarily reduce hearing by 15 to 40 decibels, which is like hearing through water. During critical periods of language learning, this muffled hearing can impact speech and language development. If your baby has frequent ear infections or persistent fluid, discuss the potential speech impact with your pediatrician.
Will Ear Tubes Help My Child's Speech?
Ear tubes (tympanostomy tubes) can restore normal hearing by draining persistent fluid from the middle ear. Many children show speech and language improvement within weeks to months after tube placement, particularly if hearing loss from fluid was contributing to their speech delay. However, ear tubes alone may not resolve all speech delays, and some children benefit from speech therapy alongside tube placement.