Your two-and-a-half-year-old is not talking. You have been on the internet about it, and two phrases keep coming back: childhood apraxia of speech, and autism. They are presented as alternatives, as though one of them is the answer and the job is to work out which.
They are not alternatives. They are answers to two different questions, assessed by different professionals looking at different evidence — and a child can have one, both, or neither. Understanding why is the most useful thing you can do before the first appointment.
One Is About the Mouth. The Other Is About Connection.
ASHA defines childhood apraxia of speech as "a pediatric neurological speech sound disorder" in which "the precision and consistency of movements during speech production are impaired, but reflexes are intact and muscle tone is typical." The difficulty is in "planning and/or programming the timing, direction, duration, degree, force, and sequence of the muscles that affect speech sound production and prosody."
Read that carefully, because the detail people skip is the second clause. The muscles work. The strength is there. What is hard is the instruction set — getting the right movements in the right order at the right speed, reliably, on demand.
Autism is a different kind of description entirely. ASHA's practice portal describes it as a neurodevelopmental disorder "characterized by deficits in social communication and social interaction and the presence of restricted, repetitive behaviors," where social communication differences "can include impairments in joint attention and social reciprocity as well as challenges using verbal and nonverbal communication behaviors for social interaction," and restricted or repetitive behaviors show up as "stereotyped, repetitive speech, motor movement, or use of objects; inflexible adherence to routines; restricted interests; and hyper- and/or hyposensitivity to sensory input."
Notice that autism is not defined by whether a child talks. Many autistic people are highly verbal. Apraxia, by contrast, is only about speech production. So "is it apraxia or autism?" is a bit like asking whether a car problem is the transmission or the insurance policy. The two are not competing explanations for the same thing.
What Apraxia Looks Like
ASHA lists three core features that have "gained some consensus among researchers":
- Inconsistent errors on consonants and vowels in repeated productions of syllables or words. The same word comes out differently each time.
- Lengthened and disrupted coarticulatory transitions between sounds and syllables, "including syllable segregation — pauses between sounds, syllables, or words that affect smooth transitions." Speech sounds effortful and broken up.
- Inappropriate prosody, especially in "the realization of lexical or phrasal stress." The melody and emphasis land in odd places.
A 2020 factor analysis by Chenausky and colleagues in the Journal of Communication Disorders coded the speech of 57 children with apraxia and found that the signs grouped into exactly three underlying factors — prosody, coarticulation, and inconsistency — which the authors noted are "consistent with the three consensus criteria for CAS from the American Speech-Language-Hearing Association."
Two caveats belong right next to that list, and both are ASHA's own. First: "Currently, there are no validated diagnostic features that differentiate childhood apraxia of speech from other childhood speech sound disorders." Second, of the three features above: "Importantly, these features are not proposed to be the necessary and sufficient signs of CAS."
In other words, this is a clinical judgment call made by an experienced clinician across multiple sessions, not a checklist with a score at the bottom. Anyone offering you certainty after twenty minutes is overselling.
For scale: ASHA puts the population point-prevalence of apraxia in children aged 4 to 8 at about 1 in 1,000, and around 2.4% among children of that age who have idiopathic speech delay. It also notes that over 95% of children diagnosed with apraxia have a co-occurring expressive language disorder, and that people with apraxia "do not 'grow out' of it but can improve their communication with speech and language services."
What the Evidence Actually Says About the Overlap
This is the part most articles get wrong, and it is worth quoting ASHA directly rather than paraphrasing:
"It should be noted that there are no large-scale, population-based studies investigating the prevalence of CAS in children who are on the autism spectrum. Limited evidence from studies showed mixed findings, with some that found a higher prevalence of CAS among individuals on the autism spectrum (Tierney et al., 2015), whereas others indicated that CAS was not more prevalent in individuals who are on the autism spectrum (Shriberg, Strand, et al., 2019)."
The same passage goes on to note that one study found a higher rate of apraxia among autistic children who are minimally speaking, while another found no significant difference among autistic children with intelligible speech. And a 2023 study cited on the same page found that comorbid autism "was not associated with greater risk for severe CAS."
If you have seen a confident percentage online — a specific figure for how many autistic children "really" have apraxia — that number comes from one side of a disputed literature, presented without the dispute. The honest summary is that the two conditions clearly co-occur in some children, that nobody has established how often, and that the answer probably depends heavily on which autistic children you are asking about.
A 2022 narrative review by Beiting in Language, Speech, and Hearing Services in Schools reached the same place from the clinical side: "less is known about the presentation of CAS among children with ASD and low verbal ability," and "more research is needed to determine whether existing speech assessment and treatment methods are appropriate for children with ASD, if modifications are needed, or if new methods should be designed." That review also makes a point worth holding onto — speech sound production "has been identified as a key predictor of expressive language outcomes," which is a good argument for assessing it properly rather than assuming the autism diagnosis explains everything.
What You Are Probably Noticing at Home
Parents are usually better observers than they give themselves credit for. What you have noticed is real data; it just answers a narrower question than it feels like it does.
Signals that point toward the speech system specifically: your child clearly wants to tell you something and cannot. They point, pull you by the hand, bring you objects, make eye contact, check your face to see if you understood, and get visibly frustrated when the word will not come. They understand far more than they say. When they do produce a word, it comes out differently each time, or it took obvious physical effort. That profile says the wanting to communicate machinery is working — which makes the bottleneck more likely to sit in speech production.
Signals that belong to the autism question: limited or inconsistent response to their name, less joint attention — the shared "look at this with me" triangle between child, object, and adult — fewer bids for interaction, a strong preference for routine, distress at change, repetitive movement or play, and sensory responses that seem unusually strong or unusually absent. These are about how your child connects and regulates, across every setting, whether or not they are speaking.
Neither list is a verdict. Plenty of autistic toddlers point and make eye contact. Plenty of children with apraxia are shy or frustrated in ways that can read as social withdrawal when they are really just tired of not being understood. These are reasons to ask the question properly, not shortcuts around doing so.
Which Evaluation First? Both.
The practical answer is to start both processes at the same time.
Autism diagnostic appointments frequently involve long waits. There is no reason for speech and language work to sit idle during that wait, and a speech-language evaluation is useful whatever the eventual diagnosis is, because it describes what your child can do right now and what to target next. Our guide to the signs your child may need speech therapy covers what that evaluation weighs, and what to expect at a first session covers how it runs.
One thing to expect: apraxia is genuinely hard to diagnose in a child who says very little, because the diagnosis depends on hearing patterns across repeated attempts. If a clinician tells you "suspected childhood apraxia of speech" rather than giving you a firm label, that is an appropriate interim finding and not a clinician dodging the question. It usually means treatment starts on the apraxia assumption while the picture is confirmed over time. Our guide to the signs of apraxia in toddlers covers what those early patterns look like.
Where the Treatments Differ, and Where They Meet
Apraxia treatment is motor learning. It is high-repetition, heavily cued, and built around movement sequences rather than individual sounds — approaches like DTTC and PROMPT, the latter using tactile cues on the face and jaw to shape the movement directly. It looks repetitive because it is supposed to; that is how motor patterns stabilize.
Autism-related speech therapy targets social communication: joint attention, initiating and responding, understanding and being understood across contexts, and giving a child a reliable way to communicate now, which often means AAC. Our guide to speech therapy for autism covers that work in detail, including the evidence on the common worry that an AAC device will stop a child from talking. If you are also weighing behavioral services, our comparison of speech therapy vs. ABA therapy explains what each one targets and how they coordinate.
For a child who has both, these are not competing plans. The motor work and the social communication work run alongside each other, and the balance shifts as the child changes.
What Bloom Does and Does Not Do
Bloom does not diagnose autism. Laura Friedman is a speech-language pathologist and Qualified Orofacial Myologist, not a diagnosing physician or psychologist; an autism diagnosis comes from a developmental pediatrician, psychologist, or multidisciplinary diagnostic team, and we will say so and help you find one rather than guess.
What Bloom does provide is the speech and motor speech side: evaluation, differential thinking about whether the pattern looks like apraxia, and treatment. Laura is an Apraxia Kids preferred provider and PROMPT-trained, and autistic children are a documented part of her caseload — which in practice means the two possibilities get considered together rather than one being assumed. Read more about Laura Friedman, or see how speech therapy for children works at Bloom.
Sessions are available in person at our Dallas office and through online speech therapy nationwide.
Frequently Asked Questions
What is the difference between apraxia of speech and autism?
They describe different things, which is why a child can have one, both, or neither. ASHA defines childhood apraxia of speech as "a pediatric neurological speech sound disorder" in which "the precision and consistency of movements during speech production are impaired, but reflexes are intact and muscle tone is typical." Autism is defined as a neurodevelopmental condition "characterized by deficits in social communication and social interaction and the presence of restricted, repetitive behaviors." One is about how the mouth executes speech; the other is about social communication and behavior across every setting, speaking or not.
Do most autistic children have apraxia of speech?
Nobody knows, and the figures circulating online overstate the evidence. ASHA states plainly that "there are no large-scale, population-based studies investigating the prevalence of CAS in children who are on the autism spectrum," and that the limited evidence shows mixed findings — some studies finding a higher prevalence, others finding it was not more prevalent. A 2023 study cited on the same page found comorbid autism was not associated with greater risk for severe apraxia.
Can a child have both apraxia and autism?
Yes. They are separate diagnoses made on separate evidence, and co-occurrence is well documented — a 2020 factor analysis of 57 children with apraxia deliberately included 27 who were minimally verbal with comorbid autism. Having one does not rule out the other.
My toddler is not talking but is very social — does that rule out autism?
It does not rule anything out, but it is meaningful. A child who points, brings you things, shares attention, and clearly wants to communicate is showing the social machinery an autism evaluation looks at. If that is intact and the words still will not come, the bottleneck is more likely in speech production. That is a reason to ask the question, not an answer to it.
Which evaluation should we book first?
Both, in parallel. Autism diagnostic appointments often carry long waits, and there is no reason for speech therapy to sit idle during them. Be aware that apraxia is hard to diagnose in a child who says very little, so "suspected childhood apraxia of speech" is a normal interim finding rather than a clinician avoiding the question.
Does Bloom diagnose autism?
No. Laura Friedman is a speech-language pathologist and Qualified Orofacial Myologist, not a diagnosing physician or psychologist. An autism diagnosis comes from a developmental pediatrician, psychologist, or multidisciplinary team. Bloom provides the speech, language, and motor speech side — evaluation and therapy — and coordinates with the team making that diagnosis.
Still Waiting for Words?
You do not need a diagnosis to start, and you do not need to work out which label fits before you pick up the phone. Schedule a free consultation with Laura Friedman, MS, CCC-SLP, QOM — in person in Dallas or online nationwide — to get a clear read on what your child's speech system is doing, and an honest answer about what should happen next and who else should be involved.