Living Within the Spectrum — Late Autism Diagnosis and the Work of Becoming Known

Autism is often spoken about as though diagnosis reveals something entirely new. Yet for many adults, particularly those diagnosed later in life, the diagnosis does not introduce autism into their story. Autism was always there. What changes is the language through which a lifetime can suddenly be reconsidered. For people diagnosed in adulthood, this reconsideration often unfolds across three closely connected areas: understanding how autistic attention and communication work, grieving the cost of years spent adapting without explanation, and building a life that makes room for genuine needs rather than merely rewarding successful concealment.

The conversation around autism has changed significantly. It is understood less as a narrow childhood presentation and increasingly as a spectrum of neurodevelopmental difference that can shape communication, sensory experience, attention, relationships and how someone makes sense of the world. Yet spectrum can itself mislead when it is imagined as a straight line from “less autistic” to “more autistic”. Autism is multidimensional: someone may have considerable intellectual or professional ability while also needing significant structure, recovery time, sensory accommodation or clarity in relationships.

Preferences differ: some people prefer identity-first language such as “autistic person”, while others prefer person-first language such as “person with autism”. The most respectful approach is to ask and follow the language each person uses for themselves.

This is why I have become increasingly cautious about the term high-functioning autism. It may appear to describe people who work, study, form relationships, raise families and live independently, yet it can conceal the effort required to do so. Functioning labels can also obscure fluctuating support needs, particularly when outward competence is mistaken for an absence of difficulty. Someone can be exceptionally capable and still find the ordinary business of being in the world extraordinarily demanding.

Before diagnosis, this contradiction can be bewildering. A person may know they are intelligent yet repeatedly struggle with things other people appear to accomplish without thought. They may excel professionally but arrive home depleted by the interactions required to sustain that competence. They may understand complex systems but find an ambiguous text message almost impossible to interpret. They may deeply want intimacy while finding the unpredictability and implicit communication of relationships exhausting. And so, long before autism is named, another explanation often takes its place: there must be something wrong with me.

Qualitative research with adults diagnosed later in life repeatedly describes a pre-diagnostic sense of being different without knowing why. Without another framework, that difference may be interpreted as personal inadequacy. Diagnosis can therefore bring something profound: not simply information, but the possibility of reorganising a life story. The past begins to look different: the childhood insistence on routine; the intensity of particular interests; the difficulty of transitions; the conversations rehearsed beforehand and analysed afterwards; the exhaustion after social gatherings; the friendships that became confusing; the need for explicit instructions; and the distress when plans changed unexpectedly. What had previously been understood as awkwardness, rigidity, oversensitivity or failure may acquire another meaning.

This is where the idea of monotropism, developed by Dinah Murray, Mike Lesser and Wendy Lawson, offers an especially humane perspective. Rather than viewing autistic attention simply as deficient, their work suggests that autistic people may allocate attention differently, concentrating intensely within a smaller number of channels at a particular moment (Murray, Lesser and Lawson, 2005). Seen through this lens, the person deeply absorbed in a subject is not necessarily refusing to engage with the rest of the world. Their attention may be profoundly engaged somewhere else. The difficulty of interruption, transition or rapidly changing conversation begins to make greater sense. So too does the importance of preparation and structure.

This has implications far beyond productivity. It asks those of us in relationship with autistic people to reconsider communication itself. We often assume that good communication should be spontaneous, intuitive and fluid. Some autistic people benefit from more time to absorb what has been said before responding; others need precision where another person relies on implication, or want to know when something is happening, how long it will last and what is expected of them. These needs are not necessarily expressions of inflexibility. Structure can reduce the amount of uncertainty the nervous system is being asked to hold. Sometimes the compassionate response is remarkably simple: say what you mean.

There is something relationally important here because historically autism has too often been described through what the autistic person supposedly lacks. Damian Milton’s influential “double empathy problem” challenges this one-directional understanding. He proposes that misunderstanding between autistic and non-autistic people can arise from differences in lived experience and ways of communicating; the difficulty is therefore relational rather than belonging exclusively to the autistic person (Milton, 2012). As a relational and integrative therapist, this matters enormously to me. If communication is relational, my task is not simply to teach an autistic client how to become better at being non-autistic. I also have to become more attentive to how I communicate. Am I being unnecessarily ambiguous? Am I mistaking silence for disengagement? Am I expecting eye contact to demonstrate connection? Am I filling pauses because they make me uncomfortable when my client simply needs longer to process? Am I privileging my way of relating as the healthy one? Therapy asks the therapist to move too.

NICE guidance translates this principle into practical recommendations: use clear and explicit language, increase predictability, attend to the sensory environment and adapt therapeutic interventions to the individual rather than expecting the individual simply to accommodate the therapy. But accommodation, important as it is, is not the whole of therapy. For somebody receiving an autism diagnosis at thirty, forty, fifty or sixty, there may be an enormous amount of emotional archaeology to undertake. A diagnosis can produce relief — there is a reason — alongside grief for the years spent misunderstanding oneself. It can bring anger towards teachers, parents, partners or clinicians who did not recognise what was happening. There may be sadness for the person one tried desperately to become. And there can be uncertainty: If this has always been part of me, then who am I now? Research on receiving an autism diagnosis in adulthood captures precisely this mixture: revelation and greater self-understanding can sit alongside stigma, regret, uncertainty and disappointment at the scarcity of meaningful post-diagnostic support. A diagnostic report is therefore not the end of the process. In many ways, it is the beginning.

There can also be a strange period in which diagnosis appears to make someone feel more autistic rather than less. Needs that were previously overridden become harder to ignore; sensory experiences become more noticeable; social exhaustion is recognised sooner; the instinct to mask begins to loosen.

The person has not necessarily changed. What has changed is their willingness — or perhaps their ability — to keep translating themselves into forms that make other people more comfortable.

Reinterpreting the past is only one part of post-diagnostic work. Diagnosis may also reveal how much energy has gone into making autistic difference less visible to others. For some people there is also the discovery of how extensively they have been masking — observing others, learning scripts, suppressing movements, monitoring expressions and constructing socially acceptable versions of themselves. Masking can facilitate social participation and sometimes provide protection, while sustained camouflaging may also carry considerable costs: exhaustion, isolation, and a diminished sense of connection with oneself.

Therapy can become one of the places where the mask is gradually allowed to loosen. Not dramatically. Not because every adaptation is somehow false. We all adapt relationally. Rather, the question becomes: Which adaptations allow me to participate in life, and which require me to disappear from myself? That distinction feels central to my work with neurodivergent clients. I do not want autism to become the explanation for everything a person feels, anymore than I want it ignored. An autistic person is still shaped by attachment, childhood, sexuality, culture, grief, trauma, desire, relationships, imagination and all the contradictions that make us human. Autism informs the person; it does not exhaust the meaning of the person. Therapeutically, integration therefore involves holding two truths simultaneously: autism matters, and you are more than your autism.

Sometimes that means creating greater structure in the therapy itself. Sometimes it means slowing conversation down, writing something rather than only speaking it, allowing silence, noticing sensory overwhelm or making expectations explicit. At other times it means exploring what happens inside a relationship when somebody cannot immediately read another person’s intention. It may involve distinguishing an actual rupture from the fear that a rupture has occurred, or helping someone identify feelings that arrive initially as bodily agitation, shutdown or an urgent need to withdraw. Above all, relational therapy can offer an experience in which difference does not automatically become failure.

There is still much we do not understand about autism. Our language will continue to change, and it should change as autistic people themselves shape the conversation. What seems increasingly clear is that autism cannot be understood solely by observing behaviour from the outside. We have to become interested in what the world feels like from within. Perhaps that is where therapy has something particular to offer. Diagnosis can say: this is part of how your mind works. Therapy can ask: What has it meant to live this life? And gradually, the question can move beyond How do I become better at fitting into the world? towards something more compassionate and more interesting: How might I build a life in which the world and I fit each other a little better?

That, for me, is the deeper work of integration: not asking someone to become less autistic, and not reducing them to an autistic identity, but helping them recognise the particular shape of their experience — its needs, sensitivities, capacities and limits — and build a life that makes room for all of it. Because perhaps the purpose of diagnosis is not to tell us who somebody is. Perhaps it is to give them another language through which they can finally begin to recognise themselves.

References

Milton, D.E.M. (2012) ‘On the ontological status of autism: the “double empathy problem”’, Disability & Society, 27(6), pp. 883–887.

Murray, D., Lesser, M. and Lawson, W. (2005) ‘Attention, monotropism and the diagnostic criteria for autism’, Autism, 9(2), pp. 139–156.

National Institute for Health and Care Excellence (NICE) (2021) Autism spectrum disorder in adults: diagnosis and management (CG142). London: NICE.