I've been putting off writing this article for months.
Every time I sat down to start it, the same discomfort stopped me. This is a site built on the idea that neurodivergent people deserve to be seen, understood, and celebrated. And here I was about to write an article that, on the surface, is about drawing lines. About who's in and who isn't. About limits on a label that has given a lot of people - including people I care about - a framework for finally understanding themselves.
That felt wrong. It still feels a little wrong.
But I kept coming back to the same counter-argument: a word that means everything means nothing. And if "neurodivergent" collapses into a catch-all for every difficult human experience, it stops doing the specific work it was built to do. Which is to say: your brain is wired differently, it has always been wired this way, the variation is real, and it has value.
That claim matters. That claim is what the whole project of neurodivergent empowerment stands on. And I think it's worth protecting - even if protecting it means saying, clearly, that not everything belongs under this particular umbrella.
So here is my view. It is mine, not a consensus position, not scientific gospel. Disagree with me. I mean that.
What the Word Actually Means
Neurodivergence, as I understand it, refers to brain development that diverges from what is statistically typical - present from early life, structural rather than situational, trait-based rather than episodic. It's about how your brain is wired, not what happened to it, and not how you feel in any given season of your life.
That definition does real work. It distinguishes a cognitive type from a symptom state. It distinguishes a brain variation from an acquired condition. And it makes space for the core insight that I find most compelling about the neurodiversity movement: these variations carry genuine strengths alongside their challenges, and the challenges are often more about environment than neurology.
Not every difficult human experience fits this frame. And pretending otherwise doesn't help anyone - least of all the people the term was built to empower.
The Core Canon - No Debate Required
Some conditions belong here without serious argument. Neurodevelopmental, present from early childhood, persistent across the lifespan, involving genuine cognitive differences with documented strengths alongside the challenges. These are the ones the neurodiversity movement was built around:
- ADHD - interest-based nervous system, time blindness, hyperfocus, executive dysfunction. Thoroughly documented, thoroughly misunderstood.
- Autism Spectrum Disorder - pattern recognition, depth of focus, authenticity, sensory intensity. The most researched and most stigmatised condition on this list.
- Dyslexia - visual-spatial reasoning, big-picture thinking, narrative intelligence. The reading difficulty is real; so are the strengths.
- Dyspraxia / DCD - coordination challenges, but often paired with high empathy, creative problem-solving, and resilience built by necessity.
- Dyscalculia - numerical processing differences. Under-recognised and frequently misattributed to general learning difficulties.
- Dysgraphia - written expression difficulty, distinct from dyslexia, and still frequently missed.
- Tourette Syndrome - involuntary tics, often accompanied by heightened perceptual awareness and reflexive creativity.
- Sensory Processing Disorder (SPD) - the nervous system processes sensory input differently, at higher intensity. Still fighting for formal recognition in diagnostic manuals, but very real.
- Auditory Processing Disorder (APD) - hearing fine; processing the meaning is harder. Frequently missed because it doesn't look like a hearing problem.
These are the core. If someone identifies as neurodivergent and it's one of these, there is no argument to be had.
The Interesting Borderlines
Then there are conditions where the answer is genuinely more complicated - not because the people experiencing them don't deserve support, but because the neurodivergent framing fits imperfectly.
OCD
There is a strong neurodevelopmental case for OCD. It presents early, it's structural, and it involves genuine cognitive differences - analytical rigour, ethical attentiveness, extraordinary attention to detail. The challenge is that OCD is also defined by distress in a way that makes the "strengths and weaknesses" frame harder to apply without trivialising the suffering involved. I include it here, with that caveat acknowledged.
Bipolar Disorder
The case for bipolar as neurodivergence is real - there's a reason so many artists, writers, and innovators carry this diagnosis. The creative and productive capacity during certain phases is documented and significant. But bipolar is fundamentally episodic in a way that the other conditions on this list are not, which complicates the "this is just how my brain works" framing. It belongs here, but differently from the rest.
Borderline Personality Disorder (BPD)
BPD is increasingly understood as neurodevelopmental - rooted in early neurological differences compounded by environment and experience. The emotional intensity, the relational acuity, the pattern recognition - these are real and they are genuine cognitive differences. The stigma around this diagnosis is disproportionate and largely unwarranted. I'd include it.
Synesthesia
Synesthesia - where senses cross-wire, letters have colours, sounds have shapes - is clearly a neurological variation. It's also so benign, and in many contexts so enriching, that it barely needs the protective umbrella of the neurodivergent label. I mention it because it belongs; I note it because it sits in a very different category of "challenge" than everything else on this list.
What I Don't Include - And Why It Matters to Say So
This is the part I wrestled with most. And I want to be clear: everything I say here is my opinion. I hold it with some confidence, but I hold it as a person thinking carefully about a hard question, not as someone issuing verdicts.
Depression and anxiety
Depression and anxiety are not neurodivergent conditions. They are mental health conditions - common, serious, deserving of compassionate treatment and zero stigma. Many neurodivergent people experience depression and anxiety, often as a direct consequence of living in a world that wasn't built for them. But the depression is not the neurodivergence. Conflating them doesn't help either. Depression isn't a cognitive type with a strengths-and-challenges profile. It's an illness that takes things from you, and the people experiencing it deserve more than a reframe.
PTSD and C-PTSD
PTSD is an acquired condition. Something happened to you, and your nervous system adapted to survive it. That adaptation is real, physiological, and deserves every bit of support and understanding. But it isn't a brain type. You weren't born wired this way. Calling PTSD neurodivergence muddies what the term means - and more importantly, it muddies the nature of trauma, which requires a different kind of understanding, not a reframe about cognitive variation.
Schizophrenia
Schizophrenia involves genuine neurological differences, and the abstract thinking and pattern recognition that can accompany it are real. But it is a serious psychiatric condition whose defining features - altered perception of reality, psychosis - sit in a fundamentally different category from dyslexia or ADHD. Applying the "celebrate the difference" frame here risks minimising the severity of what many people with schizophrenia experience. These are not people whose struggles are primarily explained by a society that fails to accommodate them. That matters.
Intellectual disabilities - and here I want to tread carefully
This is where I feel the most tension, and I want to name that explicitly.
Conditions like Down syndrome, Fragile X, and Williams syndrome are real, they involve genuine neurological differences, and the people who have them deserve full dignity, inclusion, and the recognition that their lives have value - immeasurable value. I am not saying otherwise, and I want to be very clear about that.
But - and this is my opinion, stated as such - intellectual disability as a category is not the same thing as neurodivergence as I understand it. The neurodiversity framework rests on the idea of cognitive variation with genuine strengths: the ADHD brain that hyperfocuses brilliantly, the autistic brain that sees patterns others miss, the dyslexic brain that thinks in three dimensions. That framework doesn't translate cleanly to conditions where the primary feature is a significant limitation in intellectual capacity across domains.
I also want to acknowledge the genuine complexity here. Many people with Down syndrome have co-occurring ADHD or autism features that absolutely fall within the neurodivergent frame. The conditions can overlap. What I'm saying is that the intellectual disability itself - as a distinct symptom, separate from any co-occurring neurodivergent profile - doesn't fit the same framework.
I may be wrong about this. I'm open to that. But I think saying it honestly is more respectful than either sweeping it under a broad umbrella or quietly avoiding the question.
Why I Finally Wrote This
I came back to the same thought every time I almost closed the draft: the neurodivergent community was built by and for people who spent years being told their brains were broken. The power of that community - its ability to offer real solidarity, real recognition, real empowerment - depends on the word meaning something specific.
Neurodivergence means: your brain is wired differently, it has always been wired this way, it comes with real challenges and real strengths, and the world would be poorer without the variation you represent.
That is worth protecting. Not to exclude people, but to keep the claim meaningful for the people it was made for.
If you disagree - genuinely, I'd like to hear it. The contact page exists for exactly this kind of conversation.