The Short Answer
AuDHD is shorthand for being both autistic and ADHD. It isn't a separate official diagnosis, just a quicker way to say both are present. And the overlap is really common. Having one makes you significantly more likely to have the other, and a lot of the field now treats the overlap as closer to the norm than the exception, especially in adults who are getting assessed later in life.
The two can look like they contradict each other on paper. Autism traits get described as a need for routine and predictability. ADHD traits get described as impulsive and novelty-seeking. In real life, both can be true in the same person at the same time, which is a big part of why this combination gets missed in assessments. What helps most is flexible structure, external supports, a lighter masking load, and an assessor who actually screens for both.
TL;DR
AuDHD means autism and ADHD in the same person. It's a handy shorthand, and it isn't its own diagnosis.
The overlap is super common. Having one makes the other a lot more likely.
Day to day, it often feels like a tug of war between needing routine and needing something new.
It gets missed because each one can hide the other during an assessment.
Routines with built-in choice, visual timers, checklists and less masking help a lot of people.
If you're looking for an assessment, find a provider who screens for both.
What does AuDHD actually mean?
Today I want to talk about what it looks like when both autism and ADHD show up in the same person.
A lot of people use the term AuDHD for this, and I use it too. Mostly because it's short. It isn't some separate official diagnosis. It's just an easier way to say "this person is autistic and also has ADHD."
So here's what we'll cover: why these two show up together so often, why they can look like they contradict each other, what it actually feels like day to day, and why this combination gets missed in assessments way more than people realize.
How common is it to have both autism and ADHD?
Really common. Autism and ADHD are both neurodevelopmental, and they both affect how the brain handles attention, sensory input and executive functioning. They just come at those things from different angles.
Having one makes you significantly more likely to have the other. At this point, a lot of the field treats the overlap as closer to the norm than the exception. That's especially true for adults who are just now getting assessed.
Why didn't clinicians diagnose both for so long?
Part of it is structural. Older versions of the diagnostic manual didn't allow both diagnoses to be given to the same person at the same time. That changed in 2013, with the DSM-5.
Before that, if a clinician saw traits of both, they generally had to pick one. And they'd usually pick whichever set of traits was more obviously disruptive in the room that day.
So the tools and the training shaped what got named. That didn't always match what was actually going on. If you were assessed years ago and walked away with only one of these, that history might be part of the reason. (If this sounds familiar, the misdiagnosis pipeline post goes deeper on how this happens.)
How can autism and ADHD seem to contradict each other?
This is where it gets confusing for people, clinicians included.
Autism traits get described as a need for sameness, routine and predictability. ADHD traits get described as impulsive, novelty-seeking and easily distracted. Read side by side, those sound like complete opposites. And I get it.
But people don't work like a checklist. Someone can be really rigid about their morning coffee order and also be completely unable to sit through a boring task for more than four minutes. Both of those can be true in the same person at the same time. Neither one cancels the other out.
What does AuDHD feel like day to day?
For a lot of the folks I work with who have both, it feels like a constant tug of war between the two.
It can look like:
Craving routine and sameness because unpredictability is exhausting to process... and then getting so understimulated inside that routine that you feel restless and irritable, and end up sabotaging the very structure you built for yourself.
Staring at one email for three days without being able to open it. Then that same night, getting pulled into hyperfocus on a report and not looking up until 2 a.m.
Needing background noise or movement to concentrate (fidgeting, music, pacing) and also getting completely overwhelmed by one unexpected sound or a light that's too bright.
That last one is seeking input and avoiding input at the same time. Which one wins can depend on what kind of input it is.
And then there's masking, layered right on top of all of it. You're holding up the mask while also fighting time blindness, losing your train of thought mid-task, and forgetting the step you were just on. That combination is way more tiring than either piece would be on its own.
A lot of people with both spend years thinking they're just lazy. Or that they're failing at systems that were built for a stereotypical version of ADHD or a stereotypical version of autism. That's a really common story. And those systems were never built with your brain in mind.
Why does AuDHD get missed in assessments?
Because each one can hide the other.
A provider screening for autism might see someone who's talkative, a little impulsive and a little disorganized in the room, and rule out autism. It doesn't match the quieter, more rigid picture they had in mind.
A provider screening for ADHD might see someone who's deeply routine-oriented and has rehearsed the whole visit in advance, and assume that rules out ADHD. Surely someone with ADHD wouldn't be this organized.
What's actually happening is that the two are interacting:
Sometimes ADHD impulsivity looks like it's overriding an underlying need for predictability.
Sometimes autistic focus and routine look like they're covering up ADHD restlessness.
Both are usually still there. They're just pulling against each other in ways that don't show up cleanly on a single checklist. A provider looking for a "pure" version of one condition can easily miss a mixed presentation.
What actually helps when you have both?
A one-size-fits-all approach usually doesn't work here. Strategies that help with one piece can make the other piece harder.
A tightly fixed schedule might really help the autistic need for predictability. It can also feel suffocating to the part of you that needs flexibility and novelty to function. So the goal is to test small changes and pay attention to what actually helps your particular combination. It's going to look different for you than for someone with only one of these.
A few things that help a lot of the folks I work with:
Routines with built-in choice. Instead of a routine that's rigid from start to finish, try blocks of time where you know roughly what kind of thing you'll be doing, then give yourself a choice of which specific task goes in that block. You get the predictability and the novelty.
External supports. Visual timers, alarms and checklists (we talked about these in the time blindness episode). They take some of the executive functioning load off, no matter whether ADHD or autism is driving a particular moment.
A lighter masking load where you can. You're already running a busier internal system than either diagnosis on its own. The mask is extra weight on top of that. Even small, boring choices to unmask in safe places can free up energy. (More on that in the masking episode.)
Pick one or two that sound doable to you. You don't need all of them.
Can you be diagnosed with both autism and ADHD?
Yes. Since the DSM-5 came out in 2013, clinicians can diagnose both in the same person. Before that, the manual's rules meant most people only got one. If you were assessed before then, or by someone who only looked for one condition, it may be worth revisiting.
Is AuDHD an official diagnosis?
No. AuDHD is community shorthand for having both. On paper, you'd have two separate diagnoses: autism and ADHD.
Can ADHD hide autism, or autism hide ADHD?
It can go both ways. ADHD impulsivity and chattiness can make autism harder to spot in an appointment. Autistic routines and careful preparation can make someone look too organized to have ADHD. That's a big part of why the combination gets missed.
How do I find an assessment that looks at both?
Ask providers up front whether they screen for both autism and ADHD in the same assessment. A provider who's only looking at one diagnosis can leave you with half the picture. In my practice, I offer combined autism and ADHD assessments, and every practice does this a little differently, so it's always worth asking how theirs works.
A few things to take with you
If you've ever felt like your traits contradict each other, or like you don't fit neatly into what autism or ADHD are "supposed" to look like, that doesn't mean you're neither. It can mean you're both, and both are pulling at the same time.
And if you're looking for an assessment, find a provider who actually screens for both. That can be the difference between getting the full picture and getting sent home with half of one.
Your one small step this week: notice one moment where you wanted structure and novelty at the same time. Just one. Write it down. That's useful information, whether you bring it to an assessment or just use it to build a routine that actually fits you.
Work with me
If this resonated and you're wondering whether an assessment might help, I offer combined autism and ADHD assessments for adults, virtually across 44 PSYPACT states and in person in Brevard, NC. They're interview-based and focus on your internal experience.
You can listen to the full episode above, or find The Autism Handbook wherever you get your podcasts. And if you want more content like this between episodes, come find me on Instagram at @dr.salenajustice.
About Dr. Salena Justice
Dr. Salena Justice is a Licensed Psychologist who specializes in working with high-masking, late-identified autistic adults. She provides autism assessments and skills-based therapy focused on burnout recovery, executive functioning, communication, and creating sustainable routines that work with your brain, not against it. Dr. Justice offers in-person services in Brevard, North Carolina, and virtual sessions throughout participating PSYPACT states. If you're looking for support in understanding yourself, reducing overwhelm, and building practical skills for everyday life, start here.
