How Common Is Childhood Apraxia of Speech?

When words feel just out of reach for your child, knowing how many other families walk this path can be quietly reassuring — you are far from alone.

In short

Childhood Apraxia of Speech (CAS) is considered an uncommon speech difficulty. Most estimates suggest it affects roughly 1 to 2 children in every 1,000 — so while it is far less common than everyday speech delays, it is a real and recognised condition with skilled, effective support available. It appears somewhat more often in boys, and is also seen more frequently in children who have other developmental or genetic conditions.

Understanding the numbers

CAS is a motor speech difficulty — the brain has trouble planning and coordinating the precise muscle movements needed for clear speech, even though the child knows exactly what they want to say. Because of this, many children who are first thought to have CAS turn out, after careful assessment, to have a different kind of speech delay — and the reverse is also true. This is why the exact figure varies between studies.

A few helpful points to hold in mind:

• It is uncommon, not rare — around 1–2 in 1,000 children is the most widely cited estimate.
• It is seen more often in boys than girls.
• It can occur alongside other conditions, such as certain genetic differences or broader developmental needs, as well as entirely on its own.
• A confident diagnosis takes time — CAS is one of the trickier speech difficulties to identify, and is best assessed by a speech-language therapist over more than one visit.

What matters far more than the statistic is that CAS responds well to the right kind of speech therapy — frequent, motor-focused practice that helps the brain and mouth learn to work together.

When to seek a check

Consider a speech-language check if your child says very few words for their age, is hard to understand even for family, struggles to imitate sounds or words, or seems to grope or search for how to move their mouth when trying to speak. Early support helps — you do not need a diagnosis to begin.

The Pinnacle way

AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from an app or an online figure. From there your child receives a precise speech profile through a clinician-administered structured assessment, and a plan built around motor-speech practice via our speech therapy support. You can also explore how we help families across 70+ centres.

Trusted sources

American Speech-Language-Hearing Association (ASHA) guidance on Childhood Apraxia of Speech and its estimated prevalence; American Academy of Pediatrics (HealthyChildren.org) guidance on speech and language development.

Next step — Wondering whether your child's speech needs a closer look? Book a speech assessment with a Pinnacle clinician.

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.