Why don't doctors use Asperger's as a separate diagnosis anymore?

 

The main reason is that research found it difficult to reliably separate Asperger's disorder from other forms of autism as a distinct condition.

Under the older DSM system, there were separate diagnoses such as:

• Autistic disorder
• Asperger's disorder
• Pervasive developmental disorder-not otherwise specified (PDD-NOS)

When the DSM-5 was published in 2013, these separate diagnoses were brought together under one diagnosis:

Autism Spectrum Disorder (ASD).

The idea is that autism is a spectrum, with people having different combinations and levels of support needs.

What happened to people who already had an Asperger's diagnosis?

This is an important distinction.

Someone who was diagnosed with Asperger's disorder before DSM-5 did not suddenly stop being autistic when the diagnostic manual changed.

Their previous diagnosis remains part of their personal medical and developmental history.

Under current DSM-5-TR practice, a person who would previously have received an Asperger's diagnosis may instead meet criteria for Autism Spectrum Disorder, with additional information describing their abilities and support needs.

Asperger's and autism: what was similar?

The older Asperger's diagnosis included difficulties involving:

• Social interaction
• Social communication
• Understanding social cues
• Restricted or highly focused interests
• Repetitive behaviours or routines

These overlap considerably with autism spectrum disorder.

People diagnosed with Asperger's were generally described as having no significant early language delay and often having average or above-average intellectual ability.

But autistic people can also have average or above-average intelligence and strong language skills.

That overlap was one of the reasons the separate Asperger's category became difficult to maintain.

What is different today?

The modern approach focuses less on putting someone into a particular autism "type" and more on understanding their individual characteristics and support needs.

For example, an autistic person may have:

• Strong verbal abilities but difficulty with social communication
• Significant sensory sensitivities
• Difficulties with executive functioning
• Repetitive movements or routines
• Highly focused interests
• Difficulties with everyday independence
• A need for substantial support

Another autistic person may have a very different combination of characteristics.

Both are autistic, but their support needs can be very different.

A really important point for your book

I would also update one part of the older OpenStax material.

The passage you found says autism is characterised by deficits in social interaction and communication. That reflects older clinical language, but current understanding is more nuanced. Many autistic people and modern clinicians prefer language that describes differences in social communication and interaction rather than implying that autistic people simply lack social abilities.

Also, the older passage says that autism causes "serious impairments." Current DSM-5-TR criteria focus on clinically significant impairment in important areas of functioning, while recognising that autistic people have very different strengths, abilities, and support needs.

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One of the most important things your book can teach

You could have an Easy Read box like this:

What Happened to Asperger's Syndrome?

Asperger's syndrome was once used as a separate diagnosis.

It described people who had autistic characteristics but generally did not have significant early language or intellectual difficulties.

In 2013, the DSM-5 changed the way autism was classified.

Asperger's disorder was no longer a separate diagnosis.

It became part of:

Autism Spectrum Disorder (ASD)

This happened because research found that it was difficult to clearly separate Asperger's disorder from other forms of autism.

Does this mean Asperger's was not real?

No.

People who received an Asperger's diagnosis had real experiences and real support needs.

The change was about how professionals classify autism, not about saying that those people's experiences were not real.

Why is autism called a spectrum?

Autistic people can have very different:

• Strengths

• Difficulties

• Communication styles

• Sensory experiences

• Interests

• Support needs

• Levels of independence

There is no single way to be autistic.

What About People Who Were Diagnosed Before 2013?

Their previous diagnosis is part of their history.

Some people still use the word Asperger's because it is the diagnosis they received or because they identify with the term.

Other people prefer:

• Autistic person

• Autistic

• Person with autism

• Autism spectrum disorder

People have different preferences about language.

Key Message

The diagnostic name changed. The person's experiences did not.

Asperger's disorder is no longer a separate DSM-5-TR diagnosis, but people who were previously diagnosed with Asperger's did not suddenly stop being who they were.