The term “high-functioning autism” remains widely used by the public, the media, and even some professionals. Parents may hear it when discussing a child who has fluent speech and average or above-average intelligence. Adults seeking an autism assessment may describe themselves as “high functioning” because they have a job, a family, or live independently.
However, despite its widespread use, the term high-functioning autism is not, and never has been, a formal clinical diagnosis. Modern diagnostic systems do not recognise it as a distinct condition, and many autistic people and professionals have raised concerns about the impact of using functioning labels.
This article explores where the term originated, why it became popular, why it is no longer used diagnostically, and both the positive and negative consequences of its continued use.
What Does the Term “High-Functioning Autism” Describe?
The term high-functioning autism (HFA) emerged informally to describe individuals who met criteria for autism but did not have a co-occurring intellectual disability and who often had relatively strong language skills. It is sometimes used to distinguish these individuals from autistic people with significant learning disabilities or limited speech.
Importantly, HFA has never been an official DSM diagnosis. Rather, it is a descriptive term sometimes used by clinicians, researchers and families.
The Link Between High-Functioning Autism and Asperger Syndrome
Hans Asperger first described a group of children in 1944 who demonstrated:
- Significant social difficulties.
- Intense and focused interests.
- Average or above-average intelligence.
- No significant delay in spoken language development.
The term Asperger Syndrome entered the DSM-IV in 1994 and remained an official diagnosis until 2013. During this period, individuals who would today often be described as “high functioning” frequently received a diagnosis of Asperger Syndrome.
During the lifetime of the DSM IV, autistic individuals with average or above average language and cognitive ability were diagnosed with Asperger’s Syndrome and those with language delay were diagnosed with autistic disorder. When the diagnosis moved to autism spectrum disorder (ASD), there was a tendency to use the term high-functioning autism (HFA) as a way of describing autistic individuals with average or above-average cognitive and language abilities.
Why Is Asperger Syndrome No Longer a Diagnosis?
In 2013, the DSM-5 removed the separate diagnoses of Asperger Syndrome, Autistic Disorder and PDD-NOS and replaced them with a single diagnosis:
Autism Spectrum Disorder (ASD).
The DSM-5 was published in 2013 and reflected the increased clinical understanding of autism. In this version of the DSM, which is the current version used today, the subcategories of pervasive developmental disorders such as ‘autistic disorder’, ‘Asperger’s disorder’ and ‘childhood disintegrative disorder’ were replaced with the broader diagnosis of ‘autism spectrum disorder’.
The broader term ‘autism spectrum disorder’ reflects the varied ways in which autism can impact an individual and recognises that autistic people do not always fit neatly into the previous distinct diagnostic categories. Delays in language and cognitive development are not specific criteria for the diagnosis of autism spectrum disorder.
Under the DSM-5, autism is now conceptualised as a spectrum, with supplementary support levels. Support levels are described as:
- Level 1 – Requiring support.
- Level 2 – Requiring substantial support.
- Level 3 – Requiring very substantial support.
These support levels recognise that autism affects people differently and that support needs can vary across different areas of life.
Why Do Some People Find the Term Helpful?
Although the term has limitations, it became popular for various reasons.
It Provides a Simple Description
The phrase “high-functioning autism” is used to indicate that an individual:
- Has fluent spoken language.
- Has average or above-average intelligence.
- Can access mainstream education (although not necessarily cope with the social and environmental demands).
- Can live independently as an adult.
For many families, the term offers a quick way to communicate that a child’s profile differsfrom traditional stereotypes about autism. Some adults feel that the term high-functioning autism provides a useful description of their profile; sometimes, the term forms part of their personal identity.
It Challenges Outdated Stereotypes
Historically, autism was often associated with intellectual disability and very significantcommunication difficulties.
The emergence of terms such as high-functioning autism helped increase recognition that autistic people can:
- Attend university.
- Develop successful careers.
- Build relationships.
- Live independently.
- Possess significant strengths and talents.
Why the term ‘high-functioning autism’ can be misleading
The term ‘high functioning’ appears to be a positive descriptor, but it is problematic for many reasons.
It minimises the impact of autism
Autistic individuals who have average or above-average language and cognitive abilities are often acutely aware of their differences. In a neurotypical-dominated world, this causes them to hide their autistic characteristics around others, which over time, leads to low self-esteem, a lack of self-understanding, mental health difficulties and exhaustion.
It minimises the daily challenges that individuals face
All autistic people have difficulties in social communication and social interaction, regardless of the level of language, and these difficulties can impact them daily. Autistic people also have difficulties with mental flexibility, and changes, unexpected events, or unpredictability can cause significant distress, as can the sensory differences experienced by many people.
It misleads others into thinking that support is not needed
The term ‘high-functioning’ can be interpreted as implying that support is not needed. This excludes people from the adaptations or accommodations in school, employment or social environments that they would benefit from.
Should We Stop Using the Term ‘High Functioning Autism’?
Some autistic people strongly dislike the term because they feel it minimises their struggles.
Others continue to use it because it remains widely understood and reflects their profile.
Increasingly, however, clinicians and researchers are moving away from functioning labels in favour of describing an individual’s:
- Strengths.
- Communication style.
- Sensory profile.
- Daily living challenges.
- Personal goals.
- Support needs.
This approach recognises that autism is complex and that no two autistic people have the same profile.
Conclusion
High-functioning autism is a term with a long history but no formal diagnostic status. It emerged as a way of describing autistic individuals who had average or above-average intelligence and fluent language.
While the term has helped challenge stereotypes and increase visibility of autistic people with fewer obvious support needs, it has also been criticised for minimising difficulties, obscuring support needs, and creating misleading assumptions about autism.
Today, most professionals prefer to focus on an individual’s unique strengths and support requirements rather than assigning a functioning label. This approach better reflects the reality that autism is a spectrum characterised by diverse experiences, abilities and needs
