For many adults navigating anxiety, therapy feels like the right first step. They recognize the symptoms: the chronic overthinking, the social exhaustion, the difficulty recovering after a draining week, the low-grade tension that never fully goes away. They start working on it, develop some useful tools and make genuine progress in some areas. The anxiety eases in certain situations, and then it doesn’t in others, and there’s a nagging sense that something underneath it all isn’t quite being reached.
For a meaningful number of those people, autism spectrum disorder is part of the picture they haven’t yet seen clearly. Not because they weren’t paying attention, but because ASD in adults, particularly Level 1 and Level 2, often looks nothing like the way most people were taught to understand it. It doesn’t always announce itself. It hides inside patterns that look like anxiety, perfectionism, introversion, sensitivity, social exhaustion or simply the accumulated weight of working harder than everyone else just to keep up. In a city like Denver, where high performance is culturally normalized and the expectation to appear composed and capable runs deep across professional environments, those patterns can go unexamined for a very long time.
What ASD Level 1 and Level 2 Actually Look Like in Adults
The diagnostic categories Level 1 and Level 2 ASD describe the degree to which an autistic person requires support in daily functioning, with Level 1 referring to individuals who require some support and Level 2 referring to those who require substantial support. Neither category looks the same across all people, and both are frequently misunderstood in ways that lead to delayed diagnosis or no diagnosis at all.
Adults with Level 1 ASD are often described as high-functioning, a term that has fallen out of favor in clinical settings because it tends to obscure how much effort is required to maintain that appearance of functioning. Many Level 1 autistic adults have developed sophisticated systems for navigating social expectations, professional environments and daily life, systems built over years of trial, error and intense observation of other people. Those systems work, until they don’t, and the cost of maintaining them is a level of mental and emotional expenditure that neurotypical peers often have no frame of reference for. In Denver’s professional landscape, where careers move fast and the pressure to perform is constant whether you’re working in tech, finance, healthcare, law or any number of other high-demand industries, the effort required to maintain that kind of functioning often gets absorbed into the general noise of a demanding life and never examined on its own terms.
Level 2 ASD presents with more noticeable challenges in social communication and a greater need for structure, routine and external support. Adults at this level may find that daily tasks, sensory environments, social demands or unexpected changes require significantly more time and energy to process and manage than others around them seem to need. The support needs are more visible, but the emotional experience of going undiagnosed or unsupported for years is often equally significant.
What both levels share, and what research has increasingly documented, is an elevated likelihood of co-occurring anxiety that often becomes the presenting issue long before autism is ever considered.
The Overlap Between Autism and Anxiety Is Significant
The research on this connection is consistent and worth understanding directly. Studies published in Psychological Medicine estimate the lifetime prevalence of anxiety disorders in autistic adults at 42 percent, with current anxiety disorders affecting roughly 27 percent of adults with ASD. For context, anxiety disorders affect approximately 18 to 19 percent of the general adult population in any given year, which means autistic adults are experiencing anxiety at rates that substantially exceed the general population.
Research published in PMC by the National Institutes of Health found that 20.13 percent of autistic adults had a diagnosed anxiety disorder compared to 8.72 percent of non-autistic adults, making anxiety more than twice as common among autistic individuals. Multiple meta-analyses have estimated that between 40 and 50 percent of autistic adults meet criteria for at least one anxiety disorder at some point in their lives.
Those numbers are striking on their own, but the clinical picture is even more complicated than they suggest. Research has found that anxiety may be underdiagnosed in autistic individuals because symptoms often present differently or overlap with autism traits themselves, making it difficult for clinicians to distinguish between the two without a thorough evaluation. For an autistic adult who has never been assessed, this means the anxiety they’re seeking help for may be both real and connected to something deeper that hasn’t been identified yet. That distinction matters enormously in terms of what kind of support is actually going to help.
Why Masking Drives Anxiety
One of the most important concepts for understanding this overlap is masking: the process by which autistic individuals learn to suppress, imitate or modify their natural responses in order to appear neurotypical in social and professional settings. Masking is rarely a conscious decision. It develops over years of receiving social feedback that certain behaviors are unwelcome, confusing or disqualifying, and it can become so automatic that the person doing it is barely aware it’s happening.
Research published in Nature found that autistic individuals with higher masking tendencies or stronger social awareness may experience higher anxiety precisely because they are constantly monitoring and adjusting their behavior in social situations. The cognitive load of that ongoing surveillance, tracking tone, body language, implied meaning, appropriate responses and social expectations in real time, is enormous, and it rarely stops entirely even in low-stakes environments.
According to the Manhattan Psychology Group, sensory overload, social exhaustion, uncertainty, masking, difficulty interpreting social situations and chronic overstimulation are all believed to contribute heavily to elevated anxiety rates among autistic individuals. For adults navigating Denver’s professional culture, where networking, social performance, open-plan offices, fast-paced team environments and constant availability are often baseline expectations, masking tends to be operating near full capacity for most of the working day. Cherry Creek in particular draws a high concentration of attorneys, executives, entrepreneurs and healthcare professionals who are expected to project composure and capability in every interaction, and for autistic adults in those environments, the gap between how they appear and how much energy that appearance costs can become staggering over time. The exhaustion that accumulates from sustained masking is real and significant, and it rarely resolves simply by managing anxiety symptoms in isolation.
Why So Many Adults Reach Midlife Without a Diagnosis
The pathway from childhood to an adult ASD diagnosis is rarely straightforward, particularly for people whose autism presented subtly enough to be missed or misread by teachers, parents and clinicians during early development. Many autistic adults were identified as anxious, perfectionistic, highly sensitive, socially awkward or simply intense long before anyone considered that autism might be part of the explanation.
That pattern is particularly common among women, who are diagnosed with ASD at significantly lower rates than men despite research suggesting the underlying prevalence may be much closer. Autistic women often develop highly effective masking strategies earlier and maintain them more consistently, which makes the outward presentation of ASD easier to overlook in clinical and educational settings. The result is that many women reach adulthood, and sometimes middle age, having been treated for anxiety, depression or other conditions for years without ever receiving an autism evaluation. In Denver’s professional communities, where capable, high-achieving women are often managing demanding careers, families and social expectations simultaneously, that masking can go entirely unnoticed for decades.
For adults in high-achieving environments more broadly, the dynamic compounds the challenge. The intellectual capability and coping systems that allowed someone to succeed academically and professionally can obscure the degree of effort required to do so, and the anxiety that shows up in therapy as the presenting concern is often a symptom of a much longer-running and more fundamental experience of the world that nobody has ever fully named.
What Anxiety Looks Like When Autism Is Also Present
Part of what makes this overlap clinically challenging is that anxiety in autistic adults frequently presents in ways that don’t match the standard picture of an anxiety disorder. According to research compiled by the Manhattan Psychology Group, anxiety in autistic individuals commonly appears as:
- Chronic overthinking and an inability to mentally let go of unresolved situations
- Social exhaustion that persists long after an interaction ends
- Shutdowns: a withdrawal of communication and responsiveness following overstimulation
- Irritability that seems disproportionate to the situation but reflects accumulated sensory or social overload
- Intense panic or distress around unpredictability, change in routine or ambiguous outcomes
- Perfectionism driven by fear of negative evaluation or social consequences
- Avoidance behaviors that gradually narrow the scope of tolerable situations
- Burnout: a longer-term collapse of functioning following extended periods of masking and overextension
- Difficulty recovering after social interaction, sometimes requiring days rather than hours
Many of those presentations look, from the outside, like personality traits or stress responses rather than symptoms of an anxiety disorder connected to a neurodevelopmental profile. An autistic adult who shuts down after an overstimulating event might appear antisocial or emotionally unavailable. One who experiences intense anxiety around unpredictability might appear rigid or controlling. One who is exhausted from a week of masking in a demanding professional environment might appear disengaged or unmotivated. The behavior is real and the explanation underneath it is often being missed entirely, which is part of why so many autistic adults spend years being treated for anxiety alone before realizing autism may help explain the deeper patterns beneath the stress, exhaustion and social fatigue they’ve experienced for most of their lives.
Getting the Right Support in Denver
Colorado has made meaningful progress in recent years in expanding access to mental health services and reducing the stigma around seeking help, and the Denver metro area has been part of that shift in visible ways. Neurodiversity is a conversation that has gained genuine traction locally, both in clinical settings and in broader community and professional circles, and awareness of adult ASD diagnosis has grown considerably as more people recognize themselves in descriptions of autism that weren’t available to them earlier in life.
For adults in Cherry Creek and the surrounding Denver area who are navigating anxiety and wondering whether there might be more to the picture, finding a therapist with specific experience in adult ASD presentations is an important part of getting support that addresses the full scope of what’s happening. Therapy for autistic adults with co-occurring anxiety looks different from standard anxiety treatment in ways that matter. Approaches that work well for neurotypical individuals don’t always translate directly, and effective support tends to prioritize understanding each person’s specific sensory, social and cognitive profile, developing regulation strategies that work with their neurology rather than against it, and addressing the cumulative exhaustion of years of masking alongside the anxiety itself.
The Cherry Creek area has a growing number of licensed clinicians with experience supporting autistic adults across Level 1 and Level 2 presentations, and finding a therapist with that specific background makes a meaningful difference in the kind of support you receive.
