Why Smart Women Are Often Missed in ADHD Diagnosis

Psychotherapy and ADHD Coaching

By Hanada Kardassopoulos, RP, MACP, M.Ed. Registered Psychotherapist |  Founder, Live Your Life Therapy | Toronto and Virtual  |  Ontario-Wide

Many of the women I work with were not diagnosed with ADHD until adulthood.

Not because it was not there. But because it did not look the way people expected.

They were high-achieving, organized on the surface, and responsible. But internally, they were constantly overthinking, mentally overwhelmed, and relying on pressure to get things done.

They learned to compensate early. To mask. To push. To perform. So their ADHD was missed.

What often gets labeled as anxiety, perfectionism, or overthinking can actually be the result of chronic executive functioning strain. When these patterns are understood through the lens of ADHD, there is often a significant shift: from self-blame to self-understanding.

Research continues to show that ADHD in women is often overlooked or misdiagnosed due to how symptoms present internally.

ADHD That Does Not Look Like ADHD

When most people picture ADHD, they picture visible disruption: a child who cannot sit still, a student falling behind, behaviour that is impossible to ignore. For many women, ADHD looks nothing like that. It hides behind good grades, professional achievement, and a reputation for reliability. It is present every day, invisible to everyone except the person carrying it.

This is not a recent discovery. Research has documented the gender disparity in ADHD diagnosis for decades. Girls are significantly less likely to be referred for assessment than boys, not because their symptoms are less impairing, but because those symptoms are less disruptive to others (Quinn and Madhoo, 2014). A girl who is overwhelmed but quiet does not require intervention. A boy who is disruptive does. The system was built around a presentation that was never universal.

The Invisible Effort of High Achievement

High intelligence and strong verbal skills can compensate for executive functioning difficulties, particularly in the structured environments of childhood and early education. Many girls with ADHD are told they are bright, capable, and mature. They are. But the internal experience of that achievement is profoundly different from what it appears to be from the outside.

These are the women who spend twice as long on tasks as their peers, not because they lack ability, but because their brain struggles to initiate, filter, and sustain focus without significant effort. Who rely on the adrenaline of a deadline because that is the only reliable source of activation their nervous system produces. Who experience what looks like productivity from the outside as an exhausting performance from the inside.

The National Center for Gender Issues in AD/HD describes this pattern clearly: high achievement on the outside, exhaustion on the inside. The cost of maintaining that performance is paid in full, every day, in ways that are rarely visible to anyone else.

Masking: The Learned Art of Looking Fine

Masking is the set of learned behaviours women develop to manage ADHD symptoms and meet external expectations. It begins early. A girl who notices she processes social situations differently may study her peers and mirror their responses. A student who fears being seen as disorganized may develop elaborate systems to appear otherwise. A professional who knows she is operating near capacity may take on more, not less, to protect her reputation.

Masking is adaptive. It is also exhausting, and over time it becomes automatic. Many women reach adulthood having masked so thoroughly and for so long that they no longer recognize it as a strategy. They simply believe they must work harder than everyone else, and that the constant internal tension is a personal failing rather than a neurological reality.

From the perspective of Internal Family Systems, masking can be understood as a protective part doing essential work. The part that performs, overprepares, and stays under the radar has been protecting the system from shame, criticism, and exposure for years. That part deserves to be understood and appreciated, not simply dismantled. The therapeutic work is not to eliminate the protection but to gradually reduce the conditions that require it.

What Gets Misdiagnosed Instead

Because internalized ADHD symptoms in women closely resemble anxiety and depression, misdiagnosis is common. Women are significantly more likely than men to receive a diagnosis of anxiety or depression before ADHD is ever considered, even when executive functioning difficulties have been present since childhood (Nadeau, Littman, and Quinn, 2002). The symptoms are real. The diagnosis, however, is incomplete.

Chronic overthinking, emotional sensitivity, difficulty completing tasks, and a pervasive sense of underperformance relative to effort are not primarily anxiety symptoms in this population. They are the downstream consequences of a nervous system that has been compensating for executive functioning deficits for years without adequate support. Treating the anxiety without identifying the ADHD frequently produces limited and temporary relief.

When Compensation Breaks Down

Many women seek diagnosis only when a significant life transition overwhelms their existing coping strategies. A new role with fewer external structures, becoming a parent, navigating perimenopause and its hormonal effects on dopamine and attention, or simply the accumulated weight of decades of masking can all precipitate a point at which the old strategies no longer hold.

This moment of collapse, while distressing, is also often the beginning of understanding. Women frequently describe an enormous sense of relief when their experience is finally named accurately. Somatic therapy and Narrative Therapy are particularly valuable at this stage: somatic work addresses the physiological cost of years of chronic stress and hypervigilance, while Narrative Therapy supports the client in separating her identity from the deficit-based story she has been told and has told herself.

From Self-Blame to Self-Understanding

A late ADHD diagnosis does not explain away difficulty. It contextualizes it. It offers a framework through which a woman can begin to understand her experience as neurological rather than moral, as a difference in brain wiring rather than a failure of character. That shift, from self-blame to self-understanding, is not a small thing. For many women, it is the beginning of building a life that actually works for the brain they have.

Does This Sound Familiar?

If you have spent years working harder than it seems you should need to, and wondering why everything feels more difficult than it looks for everyone else, that experience is worth exploring. I offer a free 15-minute consultation for adults across Ontario who are ready to understand themselves more clearly.

Book Your Free Consultation: lifeyourlifetherapy.janeapp.com

www.liveyourlifetherapy.com

Virtual sessions available across Ontario  |  No waitlist

References

Nadeau, K. G., Littman, E. B., & Quinn, P. O. (2002). Understanding girls with AD/HD. Advantage Books.

National Center for Gender Issues in AD/HD. (2025, December 10). Why ADHD is so often missed in high-achieving girls and women. https://ncgiadd.org/why-adhd-is-so-often-missed-in-high-achieving-girls-and-women/

Quinn, P. O., & Madhoo, M. (2014). A review of attention-deficit/hyperactivity disorder in women and girls: Uncovering this hidden diagnosis. The Primary Care Companion for CNS Disorders, 16(3).

Rucklidge, J. J. (2010). Gender differences in attention-deficit/hyperactivity disorder. Psychiatric Clinics of North America, 33(2), 357–373.

Schwartz, R. C. (1995). Internal family systems therapy. Guilford Press.

Solden, S. (2005). Women with attention deficit disorder (2nd ed.). Underwood Books.

White, M., & Epston, D. (1990). Narrative means to therapeutic ends. W. W. Norton.