If you have been reading about autism, you have probably run into the word AuDHD. It shows up in parent forums, on social media, and increasingly in conversations with pediatricians. It is a short word for a long reality: some children have both autism and ADHD at the same time, and the mix can look different from either one on its own.
What Does AuDHD Mean?
AuDHD is a
blend of two words: autism (Au) and ADHD. It describes a child who meets the
criteria for autism spectrum disorder and also meets the criteria for
attention-deficit/hyperactivity disorder.
One thing to
know up front: AuDHD is not an official diagnosis. You will not find it in the
DSM-5, the manual clinicians use to diagnose developmental and mental health
conditions. The term came from the autism community itself as a simple way to
describe living with both. On paper, a child with AuDHD receives two separate
diagnoses, autism and ADHD, from a qualified clinician.
The term
matters because the overlap is common. Research estimates suggest that
somewhere between 50 and 70 percent of autistic people also have ADHD, while
most people with ADHD do not have autism. In other words, if your child has an
autism diagnosis, there is a real chance ADHD is part of the picture too.
Why Children Could Not Be Diagnosed With Both Until Recently
For a long
time, clinicians were not allowed to diagnose autism and ADHD in the same
child. Earlier versions of the diagnostic manual treated them as mutually
exclusive. If a child had autism, any attention or hyperactivity concerns were
considered part of the autism, and the ADHD label was off the table.
That changed in
2013, when the DSM-5 removed the rule. Since then, clinicians can and do
diagnose both. This is part of why AuDHD can feel like a new idea even though
the children themselves are not new. Many parents of older kids, and plenty of
adults, are only now learning that the two conditions can coexist.
How Autism and ADHD Overlap in Young Children
Autism and ADHD
are both neurodevelopmental, which means they are differences in how the brain
develops and processes the world. They share several features, which is one
reason they are easy to confuse in a toddler or preschooler:
- Attention differences. Both can involve trouble focusing on things that are not interesting and difficulty following multi-step directions.
- Social challenges. Both can make it hard to take turns, play with peers, and keep a back-and-forth conversation going.
- Big emotions. Both can involve meltdowns, frustration, and reactions that seem much larger than the trigger.
- Sensory sensitivity. Both can include covering ears at loud sounds, picky eating tied to textures, or constant movement and touching.
- Sleep and routine struggles. Trouble settling at night and resisting transitions are common in both.
The difference
is usually in the why. An autistic child may avoid eye contact because the
sensory input is overwhelming. A child with ADHD may miss your eyes because
something across the room pulled their attention. A child with AuDHD may do
both, on the same afternoon, for both reasons.
What AuDHD Symptoms Look Like in Kids
When a child
has both, the traits do not simply stack. They interact, and sometimes they
pull in opposite directions. Parents often describe AuDHD as a tug-of-war
inside their child. Here is how that can show up in the early years.
Craving routine but unable to keep it
The autistic
side of your child may need the same bedtime order, the same cup, the same path
to the car. The ADHD side may make it nearly impossible to remember the steps
or stay on task long enough to finish them. The result is a child who is upset
when routine breaks and who also breaks it constantly. This can look like
defiance when it is really two sets of wiring working against each other.
Intense interests that shift quickly
Autistic
children often develop deep, focused interests. Children with ADHD often
hyperfocus too, but the focus tends to jump. A child with AuDHD may be consumed
by trains for three weeks, drop them completely, and then be consumed by
dinosaurs. If you have wondered how long these phases last, our post on autism
hyperfixation goes deeper on that pattern.
Social missteps for two different reasons
An autistic
child may not pick up on a playmate's facial expression. A child with ADHD may
see it and still interrupt because the impulse wins. A child with AuDHD can
miss the cue and act on impulse at the same time, which makes peer play
especially hard. Some children then replay the moment over and over afterward,
which adds anxiety on top of the social struggle.
Bigger, more frequent meltdowns
Sensory
overload, unexpected change, frustration, and impulsivity are all meltdown
triggers. With AuDHD, a child has more triggers and fewer brakes. Parents often
report that outbursts are both more frequent and harder to predict than what
they see described for autism or ADHD alone.
Restless and rigid at once
Your child may
line up toys with great care and also be unable to sit through a short story.
They may stim with hand flapping or vocal sounds and also bolt from the room
when something catches their eye.
Speech that is delayed, fast, or both
Autism can
involve delayed speech, echolalia, or difficulty with conversational
give-and-take. ADHD can involve talking a lot, jumping between topics, and
blurting. A young child with AuDHD may be late to talk and then, once talking,
be hard to follow. A speech-language pathologist can help sort out what is
happening, which is part of why Elevation offers speech therapy alongside
ABA.
Why AuDHD Is So Often Missed in Young Children
Getting both
diagnoses right can take years, and there are a few reasons for that.
One
condition can hide the other. When ADHD is identified first, the autism
traits may be read as severe ADHD. When autism is identified first, the
restlessness and distractibility may be chalked up to the autism. One study of
children with both diagnoses found an average gap of about three years between
the first diagnosis and the second.
Clinicians
wait on ADHD in very young kids. High energy and short attention are normal
for toddlers. Many clinicians hold off on an ADHD diagnosis until a child is
older, which means the autism diagnosis often comes first and ADHD is confirmed
later.
ADHD is more
familiar. ADHD is more than twice as common as autism, so pediatricians see
it more often and may reach for it first. If treatment for ADHD does not help
the way everyone expected, that can be the moment someone takes a closer look
at autism.
Girls are
missed more often. Both autism and ADHD are underdiagnosed in girls, who
are more likely to present with inattention than hyperactivity and more likely
to mask social differences. AuDHD in girls is a growing area of research for
exactly this reason.
Is AuDHD Something a Parent Can Test For at Home?
Short answer:
no. Online quizzes and social media checklists can be a helpful nudge to ask
questions, but they cannot tell you what is going on with your child. Autism is
diagnosed through a structured evaluation that includes direct observation and
a detailed developmental history. ADHD is diagnosed by looking at behavior
across more than one setting, such as home and preschool, over time.
What you can do at home is notice and write things down. Keep a simple log of what you see, when it happens, and what came before it. Note the behaviors that feel like a contradiction, such as a child who hates change and also cannot stick to a plan. That kind of specific, real-life detail is incredibly useful during an evaluation.
How ABA Therapy Supports Children With AuDHD
ABA therapy
does not treat autism or ADHD as something to fix. It helps a child build the
skills that make daily life easier: communicating needs, handling transitions,
managing frustration, playing with peers, and gaining independence. For a child
with AuDHD, that skill-building is tailored to the specific tug-of-war
described above.
A BCBA-led team
starts by understanding the why behind each behavior. Is the meltdown about
sensory overload or about not being able to wait? Is the child leaving the
table because of a texture or because of an impulse? Those answers shape the
plan. Sessions are delivered one-on-one by trained RBTs, and parents are
coached on the same strategies so they carry over at home.
For children
between ages 1 and 5, our Early
Learners program is built around exactly this kind of individualized,
play-based support.
Some families also work with their pediatrician or a child psychiatrist on medication for ADHD. That decision sits with your child's medical team, and it is a separate conversation from therapy. What we can say is that children often engage more fully in ABA once the whole picture is understood and addressed.
Get Clear Answers About Your Child
If your child
seems to live in two worlds at once, craving sameness and chasing novelty,
deeply focused and wildly distracted, you are seeing something real. An
evaluation is the first step toward understanding it. Elevation Autism provides
autism
evaluation and diagnosis, ABA therapy, and speech therapy for children ages
1 through kindergarten across North Georgia, with BCBA-led care and all major
insurance carriers accepted.
Call
404-474-0040 or book an
evaluation online to get started.
