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Start free with EleplanIsolated childhood apraxia of speech
ORPHA:209908Disease
Also called Isolated CAS · Isolated developmental verbal dyspraxia · Pure CAS · Pure childhood apraxia of speech · Speech and language disorder with orofacial dyspraxia · Speech-language disorder type 1
What it is
A rare neurologic disease characterized by impaired ability to execute complex coordinated movements underlying the production of speech, leading to highly unintelligible speech in the absence of muscular or sensory deficits.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Childhood
- Inheritance
- Autosomal dominant
- Classified as
- Disease
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Common30–79%
10Sometimes5–29%
6These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
Gene
ICD-10 codes
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Benefit programs to look at
Programs whose eligibility touches the same ICD-10 categories. Eligibility is decided by the administering agency, never by this page.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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