Asperger’s vs Autism: Understanding the Spectrum

Many parents still hear the term Asperger’s and wonder how it differs from autism. Is Asperger’s still a diagnosis? Is it “milder” autism? And how do autism levels fit into all of this? 

The short answer: Asperger’s is now considered part of Autism Spectrum Disorder (ASD)—but the language people use hasn’t fully caught up yet. Let’s break it down in a clear, practical way. 


What Was Asperger’s? 

Asperger’s syndrome was once a separate diagnosis used to describe individuals who: 

  • Had strong verbal and cognitive skills 
  • Showed social communication challenges 
  • Had restricted interests or repetitive behaviors 
  • Did not have significant language delays 

People often referred to Asperger’s as “high-functioning autism,” though this term is no longer clinically recommended. 

 

What Changed? 

In 2013, the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders) removed Asperger’s as a standalone diagnosis. Instead, it became part of a single diagnosis: 

Autism Spectrum Disorder (ASD) 

This change happened because research showed that autism traits exist on a spectrum, not in neatly separated categories. 

Today: 

  • Someone previously diagnosed with Asperger’s would now be diagnosed with Autism Spectrum Disorder 
  • Their support needs would be described using autism levels 

 

What Does “Autism Spectrum” Mean? 

The autism spectrum refers to the range of support needs, not a straight line from “less” to “more” autistic. 

Autism affects: 

  • Communication 
  • Social interaction 
  • Sensory processing 
  • Behavior and routines 

Each autistic person has a unique combination of strengths and challenges. 

 

Autism Levels Explained 

Under the DSM-5, Autism Spectrum Disorder is categorized into three levels, based on how much support a person needs in daily life. 

Autism Level 1 – Requiring Support 

Often associated with what people used to call Asperger’s. 

Common traits may include: 

  • Strong language skills but difficulty with social nuance 
  • Trouble with flexibility, transitions, or change 
  • Sensory sensitivities 
  • Challenges with organization or emotional regulation 

Individuals at Level 1 may appear independent but still benefit from structured support, therapy, or accommodations. 

 

Autism Level 2 – Requiring Substantial Support 

Common traits may include: 

  • Noticeable communication challenges 
  • Difficulty initiating or maintaining social interactions 
  • More frequent repetitive behaviors or sensory needs 
  • Struggles with daily living skills 

Support often includes consistent therapy, visual supports, and structured routines. 

 

Autism Level 3 – Requiring Very Substantial Support 

Common traits may include: 

  • Limited verbal communication or nonverbal communication 
  • Significant difficulty with change or transitions 
  • Intense sensory sensitivities 
  • High support needs for daily living and safety 

Individuals at Level 3 typically require comprehensive, ongoing support across environments. 

 

Why Some People Still Say “Asperger’s” 

Even though it’s no longer a medical diagnosis, people may still use the term Asperger’s because: 

  • They were diagnosed before 2013 
  • It feels less stigmatizing to them 
  • It helps describe their experience more clearly in conversation 

Clinically, however, the correct term today is Autism Spectrum Disorder, with a specified support level. 

Autism levels explained