Profound Autism: Why the Spectrum Needed a New Term

In recent years, the public image of autism has changed dramatically. Media coverage, social media advocacy, and popular culture increasingly portray autistic people as articulate, independent, academically successful, or socially unconventional in appealing ways. Autism is often framed primarily as a natural human variation – a different way to think and experience the world.

For some autistic people, this representation is undoubtedly valid. But it is far from the whole picture.

Largely absent from these portrayals are autistic people who cannot speak, who engage in severe self-injurious behaviour, who require lifelong 24-hour supervision, or who will never live independently. Their families often face realities that bear little resemblance to the increasingly dominant cultural image of autism. For them, autism is not simply an identity or a cognitive style. It is also a profound disability.

It was partly in response to this growing representational gap that the term “profound autism” emerged.

The Emergence of “Profound Autism”

The first major formal use of the term appeared in The Lancet Commission on the Future of Care and Clinical Research in Autism (Lord et al. 2021/2022). The Commission, involving 32 representatives from ten countries, proposed the term as an administrative category for autistic people with severe intellectual disability, minimal or absent language, and high dependency needs requiring lifelong support.

According to Catherine Lord, distinguished professor of psychiatry and education at the University of California, Los Angeles, the purpose of the term was pragmatic rather than ideological. Speaking publicly in 2020, she argued that autism had become so heterogeneous that clinically useful distinctions were increasingly difficult to make. The category was intended to improve access to services and increase research attention toward an understudied and highly vulnerable population.

Importantly, Lord explicitly acknowledged concerns about stigma and institutionalisation. She noted that the term should be used cautiously and only when clinically necessary. The intention was not to devalue autistic people, but to recognise that radically different levels of impairment and dependency exist within what is now called the autism spectrum.

This distinction matters because autism encompasses an extraordinary range of outcomes. Autism can mean graduating from university and living independently. It can also mean being unable to communicate basic needs, requiring constant supervision, or engaging in dangerous self-injurious behaviour throughout adulthood.

As Alison Singer (2021), president of the Autism Science Foundation and parent of a daughter with profound autism, observed, the phrase “autism spectrum disorder” has become such a broad umbrella that the people beneath it may have very little in common in practical terms.

The Problem of Heterogeneity

The heterogeneity of autism is widely recognised within autism research itself. Researchers such as Francesca Happé & Uta Frith (2020), Mottron  & Bzdok (2020) have repeatedly described the enormous variability within autism, while others have referred to the existence of “multiple autisms” rather than a single coherent condition.

Historian of science Marga Vicedo (2023) argues that the autism spectrum category now encompasses individuals with profoundly different abilities, impairments, developmental trajectories, and support needs. This creates difficulties not only for scientific research, but also for service provision and public understanding.

At the same time, broader diagnostic criteria and increased awareness have changed who receives an autism diagnosis. As Lord (2023) noted, many autistic people diagnosed today — particularly those without cognitive problems and with fluent language — might not have received a diagnosis 20 or 30 years ago.

This is not a trivial point. It helps explain why the public image of autism has shifted so dramatically in recent decades.

As Vicedo (2023) further notes, contemporary representations of autism disproportionately centre the more verbally and cognitively able end of the spectrum. Films, television programmes, conferences, social media advocacy, and public campaigns increasingly feature autistic people who are capable of articulating their own experiences and participating independently in public life. Meanwhile, autistic people with what was known as ‘low functioning autism’ and complex behavioural and medical needs are often absent from these representations altogether.

The result is a paradox: as autism has become more visible, some of the most disabled autistic people have become less visible.

A Distinct and Stable Population

One reason the concept of profound autism gained support among some researchers and many families is that evidence suggests this is not simply a temporary developmental stage or an arbitrary label.

In presentations discussing the Lancet Commission data, Lord reviewed findings from three longitudinal cohorts in Norway, the United Kingdom, and the United States. Estimates of profound autism prevalence varied substantially across studies — from approximately 18% in the Norwegian sample to 48% in an older American cohort — but all studies identified a subgroup with highly stable and severe impairments.

The stability figures were striking:

• approximately 90% stability in the Norwegian cohort,

• 95% in the American sample,

• and 97% in the British study.

  
  

Across all three cohorts, virtually none of the individuals classified within this category achieved independent living in adulthood. Most required highly supervised residential environments or continued intensive family care.

In 2023, Hughes et al., analysing data from the Centers for Disease Control and Prevention Autism and Developmental Disabilities Monitoring Network, estimated that approximately 26.7% of autistic 8-year-olds in the United States met criteria for profound autism.

The same study also found that children with profound autism were more likely to experience seizures, self-injurious behaviours, and very low adaptive functioning.

These findings challenge the increasingly common tendency to speak about autism primarily in terms of identity, neurodiversity, or difference while paying comparatively little attention to those with the most severe disabilities.

Why the Term Became Controversial

Despite its clinical rationale, the term “profound autism” quickly became controversial.

In February 2022, more than 20 autistic-led organisations signed an open letter criticising the Lancet Commission’s recommendation and describing the term as “highly problematic.” Critics argued that functioning labels can contribute to stigma, segregation, and paternalistic attitudes toward autistic people.

Note on terminology

In some contemporary advocacy spaces, terms such as “high-functioning,” “low-functioning,” or “severe autism” are discouraged on the grounds that they may oversimplify autistic people’s abilities or reinforce stigma.

Yet removing functional distinctions does not eliminate functional differences themselves. In clinical, educational, and social-care contexts, some degree of descriptive language is often necessary to determine support needs, safety requirements, communication accommodations, and long-term care planning.

The debate, therefore, is not simply about words. It is about whether autism should primarily be understood as a unified identity category or as a highly heterogeneous clinical reality encompassing profoundly different levels of disability and dependency.

These concerns about stigma should not be dismissed lightly. Historically, disabled people — including severely autistic people — have indeed experienced institutional abuse, exclusion, and dehumanising treatment.

At the same time, however, the rejection of differentiated terminology creates problems of its own.

Over the past decade, terms such as “low-functioning autism,” “high-functioning autism,” and “severe autism” have increasingly been criticised or abandoned in some advocacy spaces. Yet the clinical and functional differences those terms attempted to describe did not disappear.

The Lancet Commission’s proposal can therefore be understood as an attempt to solve a genuine practical problem: how to acknowledge extreme heterogeneity within autism without fragmenting the diagnosis entirely.

As Vicedo (2023) argues, the concept of profound autism was intended precisely to emphasise that different autistic people may have fundamentally different medical, psychological, educational, and social needs.

The Families Behind the Debate

For many families, this debate is not primarily ideological.

In her book We Walk: Life with Severe Autism (2020), Amy S. F. Lutz describes the realities of raising a profoundly autistic child in language largely absent from mainstream autism discourse. Alison Singer has similarly written about her daughter Jodie, who experiences intellectual disability, minimal language, aggression, anxiety, seizures, and painful self-injury.

Such accounts stand in sharp contrast to increasingly dominant narratives presenting autism primarily as a misunderstood identity or a social difference.

Many autistic people object to “dehumanising” language that reduces individuals solely to deficits or strips them of dignity and individuality”. At the same time, however, some contemporary discussions move beyond opposing dehumanising language and toward rejecting the very discussion of severe impairment itself.

For families caring for individuals with profound autism, this can feel deeply alienating. Describing severe self-injury, lifelong dependency, or profound intellectual disability is not an act of dehumanisation. In many cases, it is an attempt to communicate urgent clinical and caregiving realities that are otherwise rendered socially invisible.

What is “dehumanising language”?

Dehumanising language refers to speech or writing that denies people their humanity, dignity, or individuality by portraying them as less than fully human — for example, as objects, animals, burdens, or threats.

Importantly, describing severe disability, dangerous behaviour, or high support needs is not inherently dehumanising. Discussing medical realities or the need for intervention does not deny a person’s humanity. On the contrary, acknowledging severe suffering and dependency may be necessary in order to secure care, protection, treatment, and social support.

An autistic university lecturer living independently and a nonverbal autistic adult requiring constant supervision may share a diagnostic category, yet their day-to-day realities, support needs, and life trajectories differ profoundly.

Recognising this is not an act of stigma. It is an acknowledgement of clinical and social reality.

The Research Is Moving Forward — Despite the Controversy

Recent research continues to support the view that profound autism represents a clinically important subgroup with distinct support needs.

Researchers have increasingly noted that profoundly autistic people remain underrepresented in autism research because many studies are designed around participants who can tolerate lengthy assessments, remain still during imaging procedures, answer verbal questions, and describe their own experiences.

This creates a serious representational problem. The individuals with the greatest impairments are often the least likely to participate in research, public advocacy, conferences, media discussions, or policy debates. As a result, public conversations about autism can become disproportionately shaped by the experiences of the most articulate and independent members of the spectrum.

The controversy surrounding the term “profound autism” therefore reflects a deeper disagreement about what autism is, who gets to represent it, and how disability itself should be discussed.

Yet regardless of terminology, the individuals described by the term undeniably exist. Their needs are real, substantial, and often lifelong. Any serious discussion of autism that fails to include them risks reproducing the very exclusion it claims to oppose.