If you’ve always felt a little out of step in social situations, relied heavily on routines, or experienced certain sounds, textures, or environments more intensely than others, you may be wondering whether there’s an explanation. For some adults, that question comes after years of navigating these differences without realizing they could be related to autism.

Asperger’s syndrome is no longer a separate diagnosis—since 2013, it’s been folded into autism spectrum disorder (ASD) in the DSM-5. But the term is still widely used and searched, especially by adults who were diagnosed years ago or who are recognizing these traits in themselves for the first time. This guide explains why the diagnosis changed and what these traits can look like in adult life today.

 

What Asperger Syndrome Was—and Why It Changed

Asperger syndrome originally described individuals who showed autism-related social difficulties and restricted interests but did not have significant language delays or intellectual disability. It was often called a “milder” form of autism, though that characterization was frequently misleading—people with Asperger’s could, and can, have significant support needs that aren’t always visible.

Research showed that the boundaries between autistic disorder, Asperger syndrome, and PDD-NOS were inconsistent—different clinicians could assign different diagnoses to people with similar characteristics. The distinctions weren’t reliably useful, and consolidating them under one autism spectrum reflected the scientific understanding more accurately. Today, someone who would previously have received an Asperger’s diagnosis would instead be diagnosed with autism spectrum disorder based on their individual presentation and support needs.

 

Why Some People Still Use “Asperger’s”

Many people diagnosed before 2013 identify strongly with the Asperger’s label. Some find it useful for communicating their specific profile of strengths and challenges. Others have moved away from the term after learning about Hans Asperger’s own history: historical research published in 2018 documented his collaboration with the Nazi regime, including his role in referring children to a clinic involved in the child euthanasia program.

Whatever term someone prefers for themselves, it’s worth respecting their choice—while recognizing that autism spectrum disorder is the current clinical diagnosis.

 

Core Symptoms in Adults

Adults who would previously have been described as having Asperger’s may experience traits in several areas:

Social Communication Differences

• Difficulty understanding unwritten social rules that others seem to know intuitively
• Trouble reading facial expressions, body language, and tone of voice
• Tendency toward blunt, direct communication that others may perceive as rude
• Difficulty knowing when it’s their turn to speak or how long to talk about a topic
• Challenges with small talk, preferring deep conversations about specific topics
• Taking language literally, missing sarcasm, idioms, or implied meaning

Restricted Interests and Repetitive Behaviors

• One or more intense interests pursued with significant depth and focus
• Strong preference for routine and predictability in daily life
• Distress when routines are disrupted or plans change unexpectedly
• Repetitive movements, such as hand flapping, rocking, or tapping, that may be subtle in adults
• Strong interest in collecting, organizing, cataloging, or systematizing information

Sensory Sensitivities

• Discomfort with certain clothing textures, tags, or seams
• Overwhelm in noisy, crowded, or brightly lit environments
• Strong reactions to certain smells, tastes, or food textures
• Either seeking or avoiding specific sensory experiences

 

How This Presentation Differs from Other Autism Profiles

Under the former diagnostic criteria, individuals diagnosed with Asperger’s typically had:

• Average to above-average intelligence
• Fluent language development, though pragmatic language use could be atypical
• The ability to manage many daily tasks independently
• Challenges and support needs that may not be immediately apparent to casual observers

 

This does not mean their struggles are less real. For adults whose autism went undiagnosed for years, navigating social expectations and masking autistic traits can contribute to anxiety, depression, and burnout.

 

Common Life Impacts

Adults with this autism profile may experience challenges in specific areas:

• Workplace: Technical skills may be strong, while office politics, team dynamics, and unstructured social interactions can be challenging.
• Relationships: Communication differences, a need for alone time, and difficulty with emotional reciprocity can create challenges in romantic relationships.
• Mental health: Depression and anxiety are common co-occurring conditions, and years of masking or navigating life without understanding their differences can add to emotional strain.
• Daily life: Executive function challenges can make housekeeping, meal planning, organization, and time management difficult, even when someone manages many other aspects of daily life independently.

 

Seeking Diagnosis as an Adult

If you recognize these traits in yourself:

• Find a psychologist, psychiatrist, or other qualified clinician who specializes in adult autism assessment
• Prepare a written history of lifelong traits and challenges
• Consider whether a family member who knew you during childhood can provide information about your early development
• Screening tools such as the AQ-50 or RAADS-R may help identify autistic traits, but they cannot provide a diagnosis on their own

 

A formal diagnosis can provide greater understanding and may help you access appropriate accommodations and support.

 

When Recognizing These Traits Feels Familiar

Recognizing autistic traits in yourself as an adult can bring up a lot of questions—especially if you’ve spent years wondering why certain social situations, routines, or sensory experiences feel different for you. For some parents, learning more about their own experiences also changes how they understand and support their child.

If your child has an autism diagnosis and you’re considering support for their communication, independence, social skills, or everyday routines, Treetop can help you understand whether ABA therapy may be appropriate for their needs. Our team can answer your questions and help you determine what the next steps could look like.

 

References

National Institute for Health and Care Excellence (NICE). Autism Spectrum Disorder in Adults: Diagnosis and Management. https://www.nice.org.uk/guidance/cg142/chapter/Recommendations

Czech, H. Hans Asperger, National Socialism, and “Race Hygiene” in Nazi-Era Vienna. Molecular Autism. https://link.springer.com/article/10.1186/s13229-018-0208-6

Wallace, G. L., et al. Real-World Executive Functions in Adults with Autism Spectrum Disorder: Profiles of Impairment and Associations with Adaptive Functioning and Co-Morbid Anxiety and Depression. Journal of Autism and Developmental Disorders. https://pmc.ncbi.nlm.nih.gov/articles/PMC5111802/

St John, T., et al. A Review of Executive Functioning Challenges and Strengths in Autistic Adults. The Clinical Neuropsychologist. https://pubmed.ncbi.nlm.nih.gov/34499568/

Greenstein, E., et al. Executive Functioning Is Linked to Internalizing Symptoms in Autistic Adults With Higher Support Needs. Autism. https://pubmed.ncbi.nlm.nih.gov/42522015/