“I think I might be autistic.” “I hate eye contact.” “I get overwhelmed by loud noises.” “I’m really good at masking it.” Autism has become one of the most widely self-diagnosed conditions on social media, and for understandable reasons: Nearly everyone recognizes something of themselves in the traits now described online as autistic, disliking small talk, needing routine, having an intense interest, feeling drained after a party. None of that, on its own, is autism. But the confusion it creates points to a deeper problem that predates social media entirely: Autism spectrum disorder (ASD) may not be one condition to begin with.
ASD is commonly defined as a neurodevelopmental condition marked by differences in social communication and by restricted or repetitive behavior. The word “spectrum” is meant to capture how varied that presentation can be. What it does not settle is whether ASD names a naturally occurring cluster of features that reliably travel together, the way a genuine syndrome should, or whether it names a region within a much broader and more loosely organized developmental landscape.
In most of medicine, a diagnostic category earns its usefulness because the patients who meet it resemble one another in some meaningful way, suggesting a shared underlying process. Autism rarely clusters that cleanly. In clinical practice, children present with impairments in social reciprocity and pragmatic language, delays in expressive or receptive language, restricted interests, stereotyped movements, sensory sensitivities, attention and impulsivity problems, difficulty with emotional regulation, motor coordination difficulties, and intellectual functioning that can range from significant impairment to well above average, in combinations that rarely repeat from one child to the next. Some children show marked repetitive behavior with largely intact social skills. Others show profound social impairment with no stereotyped behavior at all. Two people can carry the identical ASD diagnosis and differ enormously: One may need lifelong support with basic communication, while another graduates from college and builds a career, with little in either presentation that predicts the other.
That variability is not incidental; it is close to the diagnosis itself. What emerges is less a tightly bound syndrome than a set of partially overlapping dimensions, with each individual occupying a different position across them. A label built that loosely can describe a pattern. It struggles to explain one, and a diagnostic category that doesn’t reliably cluster has limited power to guide inference about cause, course, or treatment.
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DSM-5’s introduction of “spectrum” acknowledged this variability by folding autistic disorder, Asperger’s disorder, and pervasive developmental disorder not otherwise specified into one category. That resolved a fair amount of arbitrary line-drawing at the margins. It did not establish that everything now called ASD shares a common underlying process. In effect, autism functions less like a discrete disease and more like a descriptive umbrella, useful for grouping certain kinds of difficulty together without telling us why any particular child has them.
A dimensional approach comes closer to what clinicians actually do at the bedside. Rather than sorting a child into or out of a single category, it characterizes them across specific domains, social communication, language, executive function and attention, sensory processing, motor coordination, adaptive functioning, some of which can be measured directly through neuropsychological testing and others described clinically with real precision. Many clinicians already think this way in practice, even when a single categorical diagnosis is what ultimately gets written down.
As with the online checklists that lead so many people to suspect autism in themselves, the deeper issue is mistaking a description for an explanation. A pattern of traits recognized in a video is not the same as a neurodevelopmental history extending back to early childhood, and neither a checklist nor a single diagnostic label can substitute for that history. None of this diminishes what people currently diagnosed with ASD are dealing with; the impairments are real and often significant. The question is not whether the difficulties exist. It is whether the label used to describe them captures something coherent about their nature, or simply organizes a wide range of different problems under one convenient name.
Psychiatric categories, autism included, are often provisional: stages in the effort to organize complex phenomena before we understand their structure. The task ahead is not just to sharpen the boundaries of ASD. It is to ask whether a single category was ever the most informative way to describe this much variation in the first place.
Nebyou Belay is a practicing psychiatrist with twenty years of experience treating children, adolescents, and adults. He is affiliated with the Brown University Department of Psychiatry and practices at Rhode Island Hospital and Newport Hospital.
He writes about the practice of psychiatry itself: how diagnoses are made, how they’re communicated to patients and families, and how psychiatric language is understood (and often misunderstood) in the wider culture. His work touches on the science and the limits of psychiatric assessment, the boundaries of what medication and diagnosis can realistically offer, and the growing overlap between clinical language and everyday identity.
Across all of it, his aim is the same: to help patients, families, and the public engage with mental health more honestly, with less oversimplification and less noise. He is currently writing a book, The Myths and Misunderstandings of Psychiatry, and is a contributor to KevinMD. He shares updates on LinkedIn.
