Do I “Have” Autism? Why So Many Adults Go Undiagnosed

Note: At NeuroSpark Health, we use identity-first language (e.g., autistic person vs. person with autism). We want to make autism assessment and diagnosis more accessible and, therefore, capture all individuals on their journey of self-understanding by welcoming those who use search engines to ask, “Do I have autism?” We support you.

Self-discovery is an important part of life, and it continues well into adulthood. If you find yourself asking, “Do I have autism?, you may be on the path to discovering more about your identity.

Autism can go undiagnosed through earlier years for a plethora of reasons. While autism diagnosis should ideally be assigned during childhood, many adults are realizing they were overlooked, misdiagnosed, or unidentified.

Many of us go through life knowing that we have unique traits and experiences, but realize later in life that these qualities align with the autism spectrum and begin exploring our neurodivergent identities. Receiving a formal autism diagnosis is not at all necessary; self-identification and self-diagnosis are valid.

That being said, a diagnosis can help provide clarity and validate a person’s experience. A diagnosis may also be needed to qualify for certain benefits and programs. Many adults eventually decide to pursue an autism diagnostic assessment for various reasons.

Why is it So Hard to Get Tested for Autism as an Adult?

The reasons are complex, and the factors for each individual are different. However, there are a few significant and common reasons.

Understanding why people go undiagnosed, or the barriers to receiving an appropriate diagnosis, can help us better support self-diagnosed, formally diagnosed, and autistic-exploring people. 

All routes to self-discovery are important. 

Why Autistic Adults Go Undiagnosed

Lack of Awareness and Specialized Training

Limited awareness of autism still persists in many areas. In the medical community, a lack of awareness can lead to missed diagnoses or even misdiagnoses. Medical professionals often have misconceptions or a lack of sufficient training about the broad range of traits and characteristics that can be associated with autism.

Autism also manifests differently between individuals. It is important to remember that autistic people do not all have the same presentations, which is why it is called the autism spectrum. This can make it difficult for those with limited knowledge of autism and the various ways it presents to make an accurate diagnosis.

Bias and Stereotypes

Biases can lead to misidentification or ignorance of symptoms. Autism is often stereotypically associated with boys and men. This can lead to underdiagnosis in women, trans, and nonbinary individuals. Gender bias and other stereotypes ingrained in diagnostic criteria can further contribute to this skew.

Autistic people from different backgrounds may present with diverse social communication patterns. Diagnosticians and neurodiversity-affirming therapists must combat these issues by fostering an informed, supportive, and inclusive environment.

Subtle Signs

The signs of autism do not always get recognized at the same age for everyone. Some people may not receive a diagnosis until adulthood due to subtle signs that providers, parents, and teachers just didn’t pick up on. Autistic adults who present more subtly may still have difficulty receiving a diagnosis.

Fortunately, it is never too late. Adults who previously went undiagnosed can still seek evaluation. For those who want or need it, a diagnosis in adulthood can bring strong feelings of relief and validation. A diagnosis can also make it easier to access appropriate support.

Masking and Camouflaging

Growing up, autistic people can sometimes learn to hide the signs of autism. An undiagnosed adult may have developed mechanisms to camouflage in order to fit into societal norms. In most cases, this comes at the expense of their own well-being, and even though they may present as ‘normal’ in public, it can be exhausting and draining.

This is called masking. Masking means concealing autistic traits and mimicking neurotypical behavior. For example, making eye contact is even more uncomfortable for the autistic person. This can make it difficult for others, including untrained healthcare professionals, to recognize the signs of autism.

Self-identification

Not everyone wants a diagnosis. There is more than one valid path to self-discovery. Some people comfortably identify as autistic without having received a formal diagnosis.

For those who choose not to receive a diagnosis, community support and resources remain important and available. Resources like neurodivergent-affirming coaching can yield great benefits, whether you are formally diagnosed or self-diagnosed.

Cultural Factors

Neurodivergence can be perceived differently within different cultures. In some cases, cultural or social norms can influence the recognition of autism. It is important to note that much of the historical research and information about autism was gathered by white men using data from primarily white boys.

Race, ethnicity, and culture are extremely important factors in understanding the disproportionality of diagnosis for people of color. 

FAQ: Do I Have Autism?

How do I know if I’m autistic?

Many autistic adults recognize patterns like sensory sensitivities, burnout, or social exhaustion long before realizing these are signs of autism. If you frequently mask, feel drained by socializing, or struggle with transitions and routines, it may be worth exploring an autism evaluation.

Can I self-diagnose as autistic?

Yes. Self-identification is valid. For many, self-diagnosis is the first step toward community and understanding, especially if access to testing is limited. Whether you’re self-identified or formally diagnosed, you still deserve support, accommodations, and acceptance.

How accurate are online autism tests for adults?

Online tests can help you reflect on your traits, but they’re not diagnostic. Tools like the RAADS-R or CAT-Q can be a good starting point, but a neurodiversity-affirming assessment offers a clearer and more nuanced understanding.

How do I know if I’m slightly autistic?

You can’t be “a little” autistic. Clinically, it’s a yes-or-no determination.

Level 1 autistic adults require less support than levels 2 or 3, but they still experience challenges in daily life. This was previously called Asperger’s syndrome, a term no longer used in diagnosis.

Find the Answers to Your Question: Do I Have Autism?

Still wondering if you meet the criteria for an adult autism diagnosis?

NeuroSpark Health provides specialized, culturally sensitive, and LGBTQIA2S+ affirming assessments in a judgment-free environment.

We understand that for many autistic people, a formal diagnosis can be a double-edged sword. That’s why we only share your results with you. And only you.

It is up to you to share (or not share) your diagnosis as you see fit. This way, you can realize the benefits of a formal diagnosis on your own terms. 

NeuroSpark Health can help you take the next step in self-understanding and exploration to answer the question Do I have autism. Our team works hard to ensure your priorities are reflected in everything we do for this community.

We understand the nuances of the autism spectrum, and our providers are experts in autism testing for late-identified adults, 2e adults, and those who are high-masking.

Ready to get started? Book a free, no obligation consultation. 

Last Updated May 2026