Understanding late diagnosed AuDHD in midlife - an experience beyond autism or ADHD

If you’ve ever felt like you’re doing Autism wrong or ADHD badly, or even that you're a fraud - you’re not alone.

When you look at the stereotypical descriptions of either Autism or ADHD on their own, those tropes and stereotypes rarely capture a nervous system that is holding elements of both.

That makes it easy to feel like you don’t belong in either story, like you’re split or somehow defective.

It's not you that's broken - it's the system

Part of why this confusion happens is historical and systemic. Diagnostic manuals used in psychiatry have only recently caught up to what many of us have known in our bodies for years.

Adult forms of ADHD weren’t even widely recognised in clinical guidelines until 2008, when the National Institute for Health and Care Excellence (NICE) expanded criteria to explicitly include adults struggling with organisation, time management and executive function at home and work. Before then ADHD was very much framed as a childhood condition that people grew out of, leaving many adults undiagnosed or misdiagnosed for decades.

Even more recently, until 2013 the main diagnostic framework used around the world (the DSM-5) did not allow clinicians to formally diagnose Autism and ADHD in the same person. That exclusion meant people with traits of both were often told they could only have one or the other, even when both sets of criteria were clearly met. It was only with the publication of the DSM-5 that dual diagnosis became possible, enabling professionals to recognise and record co-occurring Autism and ADHD.

These systemic limitations shaped decades of clinical practice, research, services and support pathways in ways that made it harder for people who sit at the intersection of Autism and ADHD to be seen, validated and understood. Silos in services still exist, especially in places where assessment pathways for Autism and ADHD are separate.

When the systems around you can only see one part of your experience, it’s natural to internalise the message that something must be “off” or incomplete.

AuDHD is a unique experience, not a watered down version of being ADHD or Autistic

The lived experience of AuDHD is not simply a 50/50 crossover of Autism and ADHD traits. It is its own distinct experience that contains contradictions and strengths that don’t sit neatly in either category, and that can feel confusing if you’ve been told to expect a single, pure narrative.

Instead of being “neither here nor there”, a lot of us are both deeply reflective and easily bored. We crave structure and we crave novelty at the same time. We can hyperfocus brilliantly while missing obvious tasks.

I can hear my cat meowing from 3 doors down, but have to have subtitles on the TV. I can devote hours researching and planning a holiday, and then feel overwhelmed and dysregulated as soon as I get there. I demand order from the world, and then create chaos.

What feels like a box of contradictions is actually a coherent pattern once you stop trying to see it through the lens of “just Autism” or “just ADHD” and start seeing it on its own terms.

Ten ways late diagnosed AuDHD can feel like a paradox

Over time I’ve come to see that most of the friction in my own late diagnosed AuDHD life (and those of my clients) hasn’t come from having “too much” going on in my brain, but from trying to force that brain into stories that only allow one truth at a time.

When you’re either meant to be steady and structured or impulsive and creative, emotionally intense or detached, reliable or wildly inventive, there isn’t much room for a nervous system that wants to be all of it.

So instead of asking “what’s wrong with me?”, I’ve started getting curious about the paradoxes themselves. What if these contradictions aren’t glitches in the system, but the system itself? What if the very tensions that have made life feel chaotic are also where our sensitivity, insight, humour and creativity live?

With that in mind, here are ten ways AuDHD often shows up as contradictions in everyday life. None of them are problems to be solved - think of them more like patterns to notice, feel into, and gently explore.

You crave novelty AND routine at the same time. Your ADHD loves new ideas, fresh starts, different paths and shiny possibilities. Your Autistic side needs rhythm, predictability and familiar anchors. This can look like lovingly designing a routine one week and feeling trapped by it the next. It is not inconsistency, it is a nervous system asking for stability and freedom in a dance rather than a cage.Experiment to try - How can you create a spacious routine that meets your need for structure AND creates flexibility and opportunity for being spontaneous?

You feel everything deeply AND struggle to name what you feel. Emotions can be intense, fast, and body-based, yet the words and understanding can arrive late. You might react strongly in the moment and only understand why hours later. From the outside this can look dramatic or unpredictable. From the inside it feels like swimming in deep water without goggles. Experiment to try - what happens when you slow down and create a pause between thought/feelings and action?

You can hyperfocus for hours AND still feel chronically behind. When the right spark hits, you can lose entire afternoons to immersion and brilliance. But afterwards your system collapses, chores pile up, and guilt creeps in. Many of us internalise the cruel logic that if we can do it sometimes, we should be able to do it always. Experiment to try - notice what happens if you meet your perceived failings with compassion for what feels hard rather than judgement for not doing/being enough.

You notice the tiniest detail and see patterns with ease AND you can miss the obvious. You might read the emotional undercurrent of a room instantly, spot the murderer in a thriller straight away and yet forget where you put your keys or wish your friend a happy birthday. You can spot patterns others overlook, then forget to reply to a simple text. Care is usually high. Working memory is not. Experiment to try - how can you support yourself to feel less pressure to be a miracle memory marvel and use more tools, resources and systems to help keep on track?

You are highly self-aware AND deeply confused about who you are. Late diagnosis means a lifetime of adapting to fit environments not built for you. You become an excellent observer of yourself, yet feel strangely rootless. A lifetime of masking can also make you feel detached from your true self and what it is that really matters to you. Understanding AuDHD in midlife can feel like slowly reclaiming your own story from years of masking and fitting in - belonging becomes possible. Experiment to try - what would you like to revisit or reclaim from your childhood? Hobbies, interests, and skills from when you were a kid can help you reconnect with what feels more like your true self.

You want connection AND need a lot of space. You long for deep, meaningful relationships, yet everyday social energy can drain you quickly. This often creates a push-pull rhythm of closeness and retreat that can feel confusing until you realise it is not rejection; it is regulation. Experiment to try - how can you create "buffer zones" of downtime where you can regulate your nervous system so social interactions feel supportive and nourishing, not draining and overwhelming.

You can plan brilliantly AND struggle to execute. Strategic thinking, creativity and big-picture vision can be real strengths. Initiation, prioritisation and follow-through can still be hard. When we judge outcomes rather than effort, this mismatch gets moralised as laziness, which is both unfair and inaccurate. Experiment to try - what else, other than your productivity makes you a worthy human being (spoiler alert - everything, everything about you is worthy)

You resist authority AND crave clear rules. Many AuDHD people instinctively question unfair systems and measures of control whilst also feeling safest when expectations are transparent and consistent. Ambiguity is exhausting. Clarity is kind. Experiment to try - how can you offer clarity to yourself and others this week?

You are incredibly resilient AND easily overwhelmed. Living in a world that misunderstands your brain builds adaptability, humour and grit. It also accumulates sensory and emotional fatigue. Both truths sit side by side. Experiment to try - can you identify the things that support you feel calm, and how can you maximise them?

You are not broken, but you may feel like you are. This is the core paradox. AuDHD is not a diluted version of Autism or ADHD - relating to both yet somehow also neither doesn't make you a fraud - it makes you unique. It is a distinct neurotype shaped by biology and by systemic ableism. Experiment to try - what strengths do you have and how can you celebrate them?

When the world lacks language and compassion, self-blame rushes in to fill the gap.

The response is to swap judgment for curiosity to build understanding and acceptance.

Owning your AuDHD experience

Understanding AuDHD in midlife is not about fitting yourself back into the boxes that never quite fit you. It’s about recognising the full shape of your own nervous system, paradoxes and all.

It’s about seeing the strengths that were hiding behind self-judgement and naming the context that made you doubt yourself in the first place.

Here are a couple of questions to reflect on that can help you own your experience rather than fight against it:

• Which of these paradoxes feels most familiar to you, and what does it reveal about your neurology rather than your worth?
  

• What shifts in your self-narrative if you treat your contradictions as evidence of uniqueness rather than evidence of failure?
  

• What becomes possible when you swap judging what feels difficult and instead focus on your strengths - the things that come easy, feel good and where you shine?
  

You don’t have to resolve these tensions. You only need to stop treating them as signs that something is wrong with you. And if you'd like some help navigating this part of your journey, check out the tools in my Curiosity Starter Kit.