Am I Neurodivergent? Signs to Look For and What to Do Next
A therapist's guide to recognizing signs of ADHD and autism in yourself as an adult, what the research says about self-identification, and what to do next.
If you're reading this, something probably already brought you here: an article that hit too close to home, a friend's diagnosis that sounded oddly familiar, or your own kid's evaluation making you quietly wonder about yourself. That instinct is usually worth taking seriously. This post walks through what "neurodivergent" means, the signs worth paying attention to, what research says about figuring this out without a formal diagnosis, and what to do with the answer.
What does "neurodivergent" actually mean?
The term gets used loosely online, and two related words get conflated constantly, so it's worth being precise.
Neurodiversity was introduced by sociologist Judy Singer in the late 1990s. It describes a population-level fact: human brains vary, the same way bodies or personalities do, and there's no single "correct" way for a brain to be wired. Neurodiversity describes everyone - it's not a label for an individual.
Neurodivergent is different. Autism rights activist Kassiane Asasumasu coined this term around 2000, specifically to describe an individual whose neurocognitive functioning diverges from dominant social expectations. Her definition was deliberately broad - it includes autism and ADHD, but also learning disabilities, epilepsy, and conditions like PTSD or OCD. So "neurodivergent" is the word for a person; "neurodiversity" is the word for the concept.
Given that scope, this post focuses specifically on ADHD and autism, since that's where the bulk of adult self-recognition tends to land, and it's the area I specialize in.
Common signs you might be ADHD
ADHD in adults rarely looks like the stereotype of a hyperactive kid bouncing off the walls. It's often quieter and more internal:
Time blindness. Chronic trouble estimating how long things take, losing track of time, or being surprised, again, that it's suddenly 6pm.
Task initiation trouble, especially for things that aren't urgent or immediately interesting, even when they matter to you.
A drawer full of abandoned organization systems that worked for two weeks and then quietly stopped.
Emotions that arrive fast and large, especially around criticism or perceived failure, followed by frustration at your own reaction.
A lifelong pattern of "smart but not living up to potential," heard from teachers, bosses, or your own inner voice.
Common signs you might be autistic
Autism in adults, especially adults who've spent decades compensating, often looks less like the media stereotype and more like this:
Sensory sensitivities - certain fabrics, sounds, lighting, or foods that other people don't seem to notice bothering you as much.
Needing real recovery time after socializing, even socializing you genuinely enjoyed.
A strong pull toward routine and predictability, and disproportionate distress when plans change without warning.
Deep, sustained interests you can talk about for hours, that other people sometimes find "too much."
A sense of translating during conversation - consciously working out what to say or how to react, rather than it happening automatically.
Literal or very direct communication, sometimes misread by others as blunt or overly formal.
Plenty of people recognize themselves in both lists - the overlap between ADHD and autism is large enough that it has its own informal shorthand, AuDHD. Traits alone aren't a diagnosis. What matters clinically is degree, how long the pattern has been there, and how much it's shaping your life.
Do I need a formal diagnosis to know?
Research on self-identification is genuinely mixed, but more supportive of it than you might expect. One study comparing self-identifying autistic adults to formally diagnosed adults found that both groups scored above the clinical threshold on a standard autism trait measure at almost identical rates - over 93% in both groups. Widely used self-screening tools like the RAADS-R were validated with high sensitivity, meaning they rarely miss autistic traits when present.
At the same time, other research has found real differences between self-identified and clinically diagnosed samples - for example, higher rates of social anxiety in self-identified groups - and screening tools alone can't always distinguish autism from conditions with overlapping presentations, like complex PTSD or social anxiety disorder, which need different support. So self-recognition is a legitimate, evidence-backed starting point - not an unreliable guess - but it isn't a substitute for professional input if you want that level of clarity.
What to do next
You don't have to decide right now whether you want a formal evaluation. A few reasonable next steps, in roughly the order most people find useful:
Write down the specific patterns. "I've told loud, unpredictable environments have exhausted me since childhood" is more useful, to yourself and to any future clinician, than "I think I'm autistic."
Notice what's driving the question. Are you looking for language for a lifetime pattern, or are you also dealing with real day-to-day impairment - missed work deadlines, relationship strain, burnout? Both are valid reasons to explore this, but they point toward slightly different next steps.
Talk to a therapist who works in this space, even before any formal testing. A lot of the clarity people are looking for doesn't require a diagnostic report - it requires someone who can help you make sense of the pattern and figure out what would help.
If you want a formal evaluation, ask a therapist familiar with adult ADHD or autism assessment for a referral - the right evaluator matters more than the general idea of "getting tested."
A last note
If you made it this far and a lot of this sounded familiar, that's worth trusting. You don't need to have an official diagnosis, or even full certainty, to start figuring out what would help. That's genuinely one of the more common starting points I see in my own practice.
If this sounds like you, or like someone you love, it might be worth a conversation. [Book a Free 15-Minute Consultation]
Frequently Asked Questions
What's the difference between neurodivergent and neurodiverse? "Neurodivergent" describes an individual person. "Neurodiverse" and "neurodiversity" describe a group or population - a room full of people with different neurotypes is neurodiverse; a single person in that room is neurodivergent, not "neurodiverse."
Can you be neurodivergent without a diagnosis? Yes. Research on adults who self-identify as autistic, for example, generally finds trait levels similar to formally diagnosed adults. A formal diagnosis can still be useful for accommodations, medication, or personal clarity, but it isn't what makes someone's experience real.
Is it normal to relate to both ADHD and autism traits? Very. The overlap is significant enough to have its own informal term, AuDHD, and a lot of adults who explore one condition end up recognizing traits of the other too.
Sources: Singer, J. (1999) on the origin of "neurodiversity"; Asasumasu, K. (c. 2000) on the origin and scope of "neurodivergent"; research comparing self-identified and formally diagnosed autistic adults on standardized trait measures (RAADS-14/RAADS-R validation literature); general literature on adult autism evaluation cost and access barriers.