Did you always feel a little different?
Understanding Late Diagnoses of Autism, ADHD, and AuDHD
By Gina Sita-Molz, Psy.D., BCBA, Licensed Psychologist
Understanding Late Diagnoses of Autism, ADHD, and AuDHD
By Gina Sita-Molz, Psy.D., BCBA, Licensed Psychologist
You got through school. You hold down a job. You have friends, maybe a family. From the outside, your life looks perfectly functional. And yet, something has always felt ‘off.’ You’ve worked twice as hard as everyone around you just to keep up. You feel exhausted by things others seem to find effortless. You’ve spent years wondering why.
If any of that resonates, you’re not alone. Many adults are now receiving diagnoses of Autism Spectrum Disorder (ASD), Attention Deficit Hyperactivity Disorder (ADHD), or both (a combination increasingly called AuDHD) for the very first time. For some, this comes in their thirties, forties, or even later in life.
“A late diagnosis doesn’t mean you weren’t struggling all along. It means the struggle finally has a name.”
This post is for anyone who suspects they might be neurodivergent, or who is trying to make sense of a recent diagnosis. We’ll look at childhood signs that often go unrecognized, adult symptoms and coping patterns, and how therapy can support you as you explore what this means for your life.
Looking Back: Childhood Signs You Might
Not Have Recognized
Neurodivergent children are remarkably adaptable. They often learn, consciously or not, to compensate for the ways their brains work differently. This is especially true for girls and women, as well as people who are intellectually gifted. As a result, the signs of autism and ADHD can be subtle, dismissed, or attributed to personality traits rather than neurology.
Here are some childhood experiences that are often recognized in hindsight as early indicators:
• Acting as an observer: feeling like you were studying other kids to figure out how to behave, rather than naturally knowing
• Intense, focused interests: absorbing yourself completely in a specific topic or interest, often to the exclusion of everything else
• Sensory sensitivities: strong discomfort with changes in routine, particular foods, or certain textures, sounds, or fabrics
• Taking things very literally: struggling to understand unspoken social rules, sarcasm, or what people “really meant”
• Difficulty with same-age friendships: preferring the company of adults or much younger children over peers
• Emotional sensitivity to environment: feeling overwhelmed in noisy, busy, or unpredictable environments like school lunch rooms or parties
• Talking ‘too much’ about one thing: conversations that felt scripted, rehearsed, or one-sided. You may have talked at length about your interests without realizing others weren’t equally engaged
• Zoning out in class: being described as a ‘daydreamer,’ ‘lost in thought,’ or ‘not reaching your potential’
• Constant disorganization: your bedroom, backpack, or locker was chaos, even when you genuinely tried to be organized
• Forgetfulness: losing things constantly (books, coats, lunch boxes, homework)
• Restlessness or hyperactivity: feeling like you had a motor running inside you, struggling to sit still, or seeking out physical activity and stimulation
• Hyperfocus on preferred activities: when something captured your interest, you could focus intensely for hours; when it didn’t, focusing felt genuinely impossible
• Emotional dysregulation: bursting into tears or anger more easily than peers, feeling emotions very deeply and having difficulty self- regulating
• Incomplete projects: frequently leaving tasks unfinished, starting projects with enthusiasm and abandoning them, intensely jumping from one new hobby to another
AuDHD (the co-occurrence of autism and ADHD) is more common than previously understood, and it often presents in particularly complex ways. Some experiences that suggest both:
• Craving routine and sameness (autistic) while also being easily bored and seeking novelty (ADHD)
• Hyperfocusing intensely on interests, but those interests shifting frequently
• Extreme sensitivity to sensory input alongside an inability to sit still or regulate stimulation
• Social exhaustion from masking, combined with impulsive social behaviors like interrupting or oversharing
• Difficulty with transitions or change, but also needing frequent change to stay engaged
Adulthood: The Symptoms That Persist (and the Strategies That Hide Them)
If you made it to adulthood without a diagnosis, there’s a good chance you developed some remarkably sophisticated ways of managing. Psychologists call this ‘masking’ or ‘compensation’ and while it can be effective in the short term, it comes at a real cost.
How Neurodivergence Shows Up in Adults
This is one of the most consistent features of adult ADHD and is also common in autism. You might struggle with:
• Starting tasks, even when you genuinely want to do them (task initiation)
• Managing time — underestimating how long things take, being chronically late, or losing track of time entirely (time blindness)
• Holding multiple pieces of information in mind at once (working memory)
• Switching between tasks, or switching off from work at the end of the day
• Prioritizing; everything feels equally urgent, or nothing does
Adults with undiagnosed autism or ADHD frequently describe:
• Feeling like they’re always ‘performing’ in social situations rather than genuinely connecting
• Exhaustion after social events, even enjoyable ones
• Difficulty maintaining friendships over time without a shared structure (like work or school)
• Saying the wrong thing, missing social cues, or replaying conversations anxiously afterward
• Relationships that feel intense but burn out quickly
Both autism and ADHD involve differences in emotional processing. Adults may experience:
• Rejection Sensitive Dysphoria (RSD) — an intense, often overwhelming emotional response to perceived criticism or rejection
• Mood that shifts rapidly and unpredictably
• Feelings of shame or self-blame for things that are neurological, not character flaws
• A deep inner emotional world that feels difficult to access or communicate
Masking is not dishonesty. It is survival. But recognizing it is the first step to understanding yourself more fully.
Many late-diagnosed adults look back and realize the extraordinary lengths they went to in order to appear ‘normal.’ Common masking strategies include:
• Mirroring: Watching how others behave and consciously replicating it to fit in socially
• Scripting: Rehearsing conversations or social scenarios before they happen, sometimes extensively
• Overperforming: Overworking to compensate for slower processing or executive function difficulties
• Rigid routines: Following a highly regimented daily structure to manage unpredictability and reduce cognitive load
• Over-asking questions: Keeping conversation focused on the other person to avoid the discomfort of self-disclosure or the fear of "talking too much"
• Developing a strong ‘persona’: Using humor, charm, or extroversion to cover social confusion
• Compensatory tools: Making copious lists, reminders, and organizational systems to compensate for forgetfulness or disorganization
These strategies often work well enough, until they don’t. Burnout, major life transitions, grief, or sustained stress can collapse them suddenly, which is frequently what brings people to therapy in the first place.
How Therapy Can Help If You Suspect Neurodivergence
Whether you have a formal diagnosis or are still in the process of exploring, therapy can be an important and meaningful resource. Here’s what that might look like:
Exploration and Validation
Many people come to therapy with a vague but persistent sense that something doesn’t add up. A therapist who is knowledgeable about neurodivergence can help you:
• Reflect on your history and experiences through a neurodivergent lens
• Understand which behaviors may be symptoms rather than personality flaws or failures
• Process any grief, relief, anger, or confusion that comes with late recognition
• Decide whether formal assessment might be appropriate and, if so, how to pursue it
Receiving a diagnosis as an adult is rarely simple. For many people it brings enormous relief. Finally, an explanation! But it can also stir up grief for the child who struggled without support, anger at systems that missed it, or uncertainty about what this means for your identity going forward.
“Many clients describe the period after a late diagnosis as both liberating and destabilizing. Therapy provides a space to hold both of those things at once.”
Therapy can support you in integrating a new understanding of yourself. The goal may be to reimagine yourself whose brain works differently and who deserves appropriate support, not as someone who needs to be fixed.
Depending on your needs, therapy may also involve:
• Executive function coaching: Strategies tailored to how your brain actually works, rather than generic productivity advice
• Emotional regulation tools: Working with rejection sensitivity, emotional dysregulation, or anxiety that often accompanies neurodivergence
• Unmasking safely: Gradually learning when and how to unmask, so you can be more authentically yourself
• Social navigation: Approaching social interactions from a place of genuine understanding rather than performance and fear of getting it wrong
• Addressing shame: Examining internalized shame and rebuilding self-concept on more accurate and compassionate foundations
Not all therapy approaches are equally suited to neurodivergent clients. Evidence-based modalities that may be particularly helpful include:
• Cognitive Behavioral Therapy (CBT), particularly adapted for ADHD or autism, which focuses on the relationship between thoughts, feelings, and behaviors
• Dialectical Behavior Therapy (DBT), which provides concrete skills in emotional regulation, distress tolerance, and interpersonal effectiveness
• Schema Therapy, which addresses deep-rooted beliefs about self and others that often develop from years of feeling different or misunderstood
• EMDR or trauma-focused approaches, as many neurodivergent individuals also carry significant relational or developmental trauma
• Acceptance and Commitment Therapy (ACT), which supports building a life aligned with your values, including accepting a brain that works differently
It’s also worth noting that a good therapeutic fit matters enormously. A therapist who is neurodivergent-affirming (one who understands that these are differences, not deficits) can make a profound difference to the experience of therapy itself.
A Final Word
If you’ve read this far and found yourself nodding along, that recognition is worth paying attention to. You don’t need a formal diagnosis to deserve support. You don’t need to have had a chaotic, obviously struggling childhood. And you don’t need to fit a textbook image of what autism or ADHD ‘looks like.’
What you do deserve is a space where your experiences are taken seriously — where the exhaustion of masking is acknowledged, where your strengths are seen alongside your difficulties, and where you can begin to understand yourself with more compassion and less self-blame.
“A late diagnosis is not the end of a story. For many people, it’s the beginning of finally understanding the one they’ve always been living.”
If you’d like to explore these questions in therapy, I invite you to reach out. An initial consultation is a no-pressure conversation about where you are and what support might look like.