ADHD in Women: Late Diagnosis & the On/Off Switch

Why ADHD can mean periods of high achievement followed by exhaustion, flatness and disconnection — and why a diagnosis later in life can change how we understand ourselves.

When we think about ADHD, many of us still imagine a restless child who struggles to sit still, concentrate or behave in the classroom.

But what about the woman who has spent decades being capable, responsible and successful? The woman who manages a demanding career, looks after everyone else and appears to have everything under control?

Men can experience this too, of course. But for many women, ADHD has remained hidden behind years of coping, compensating and trying harder.

The difficulty isn't necessarily that she cannot achieve. It's that she cannot consistently access the motivation, energy and engagement that seem to come so naturally at other times.

She might notice that other people seem able to get on with things more consistently. They decide what they want to do, and somehow they just do it.

For her, it isn't always that straightforward.

And by the time she reaches her forties or fifties, she will usually have developed quite a story about herself.

Perhaps she's lazy. Inconsistent. A bit strange. Too sensitive. Someone who starts things enthusiastically but never quite follows through.

She knows what she's capable of because she's seen herself do it. What she cannot understand is why she sometimes seems to lose access to that same person.

This is part of what makes a diagnosis of ADHD later in life so significant. It offers an opportunity to revisit decades of experiences from a different position, with a different understanding of what may have been happening.

When Life Feels Like It Has an On/Off Switch

I recently had a conversation with a very experienced psychiatrist who specialises in ADHD. I asked him why he chose to specialise in ADHD.

He said ADHD as one of the most effectively treatable neurodevelopmental conditions. What he loved about working with people with ADHD was seeing the difference treatment could make.

He described how medication can sometimes "just plug them back into life."

We also talked about something he frequently notices in people with ADHD: periods of being 'on' and periods of being 'off'.

During the 'on' periods, people can be enormously engaged. They might be completely absorbed in their work, enthusiastic about a new interest, socially connected or achieving extraordinary things.

Then, sometimes without any obvious explanation, that engagement disappears.

They're still the same person. They know what they were doing before. They might even want to return to it.

But they cannot seem to get themselves going.

The motivation has gone. Things feel flat. They may withdraw, struggle to make decisions or spend days wondering what they're supposed to be doing.

And often the most frustrating part is that they can't explain why.

It can feel as though they've lost access to themselves.

ADHD isn't simply a problem with paying attention. It's also a difficulty with regulating attention, motivation, activity and, for many people, emotions.

Someone might have an extraordinary capacity to focus when something captures their interest, yet struggle to initiate a relatively simple task that doesn't provide the same stimulation.

That inconsistency can be deeply confusing, especially when nobody has ever explained it.

Why ADHD Has Been Missed in So Many Women

For decades, our understanding of ADHD was largely shaped by its presentation in boys.

The more visible hyperactivity, impulsivity and disruptive behaviour often associated with ADHD attracted attention.

And that has not necessarily been a good thing for boys and men. Many have endured difficult school experiences, exclusion, rejection, risky behaviour and serious consequences from ADHD that was not properly understood or supported.

But girls often presented differently.

A girl might not be running around the classroom. She might be sitting quietly, daydreaming, struggling to follow what's happening or experiencing enormous mental restlessness that nobody else can see.

She might be conscientious but disorganised. Bright but inconsistent. Sensitive, anxious or easily overwhelmed.

And she might become very good at hiding it.

Many women develop elaborate ways of managing their difficulties.

They become highly conscientious. They rely on urgency, deadlines, responsibility or the needs of other people to keep themselves moving.

Some become excellent in demanding careers because the pressure, variety or intensity provides exactly the stimulation they need.

Others become the person everyone relies upon.

From the outside, they seem absolutely fine.

Internally, though, maintaining that capability may require extraordinary effort.

And there can be another side that other people don't always see.

Periods of becoming overwhelmed, emotionally reactive, irritable or suddenly unable to cope. Moments when their reactions seem disproportionate, even to themselves.

They may find themselves responding in ways they don't particularly like, then feeling embarrassed or ashamed afterwards.

This difficulty with emotional regulation can become another reason to criticise themselves.

Over time, exhaustion, burnout, low self-esteem and recurrent periods of feeling they have somehow failed can become part of their experience.

Why ADHD Can Become More Noticeable in Midlife

For many women, their forties and fifties are when things begin to unravel.

The demands of parenting, work, relationships and caring responsibilities may be considerable.

At the same time, perimenopause and menopause can bring changes in sleep, concentration, energy, mood and emotional regulation.

Hormonal fluctuations can have a substantial impact on women with ADHD, sometimes making previously manageable difficulties much harder to compensate for.

A woman who has spent her life getting by through determination, responsibility and sheer effort may suddenly discover that her usual strategies are no longer working.

She may visit her GP describing anxiety, depression, exhaustion, irritability or an unexplained loss of motivation.

These are recognisable symptoms, and they deserve attention. But sometimes what sits underneath them is ADHD that has never previously been identified.

ADHD can coexist with anxiety and depression, and the difficulties can become intertwined.

Hormonal treatment, where appropriate, may also help with menopause-related symptoms that are adding to the difficulties.

Understanding the whole picture matters.

For some women, this is the point at which they finally begin to recognise a pattern that has been present for much of their lives.

Are We Being Invited to Dismiss ADHD Again?

There has been a change in the public conversation about ADHD.

Increasingly, the discussion focuses on whether too many people are receiving diagnoses, whether assessments are sufficiently rigorous and whether ordinary difficulties are being medicalised.

Of course, assessments should be thorough and evidence-based. People deserve an accurate understanding of their difficulties and access to appropriate treatment.

But there is another consequence of this conversation that concerns me.

When public discussion repeatedly questions the legitimacy of ADHD diagnoses, it can invite people who don't understand the condition to question whether it is real, serious or deserving of treatment.

More importantly, it can make people who are still undiagnosed question themselves all over again.

Imagine spending forty or fifty years believing that something about you isn't quite right.

You have worked hard, compensated, struggled, perhaps experienced repeated periods of burnout or emotional difficulty, and never fully understood why.

Then, just as information becomes available that might finally explain your experience, the public conversation begins suggesting that perhaps too many people are being diagnosed.

What does that do to someone who is already uncertain about whether their difficulties are legitimate?

My concern is that it can reinforce precisely the shame and self-doubt that have prevented people from seeking help in the first place.

There is also a wider concern about the culture within services.

When the dominant conversation becomes one of questioning diagnoses, we risk encouraging a more dismissive approach to people seeking assessment.

We have seen how women's experiences of hormonal difficulties have historically been underestimated or dismissed, with understanding and access to treatment only beginning to improve more recently.

The independent review published in England in October 2026 acknowledged concerns about diagnostic quality, but it also recognised that underdiagnosis continues and that the available evidence does not establish widespread overdiagnosis.

An increase in diagnoses may partly reflect people finally being recognised after decades of being overlooked.

And for women who have spent much of their lives trying to understand themselves, that recognition is necessary.

What Difference Can Treatment Make?

One of the encouraging things about ADHD is that we have effective treatments.

For some people, medication can make a dramatic difference to their ability to initiate tasks, sustain attention, regulate their activity and participate more consistently in everyday life.

It doesn't change who they are.

But it may help them access abilities that were always there.

This brings me back to the psychiatrist's observation about people becoming plugged back into life.

People with ADHD can be extraordinarily creative, energetic, resourceful, determined and focused when their interests and circumstances align.

In the right environment, with the right understanding and support, many can flourish.

The aim of treatment isn't to make someone into a different person. It's to help them make better use of the abilities they already have, without relying so heavily on pressure, urgency or extraordinary effort to keep going.

Psychological therapy also has an important role.

Medication may help someone manage their attention, motivation and regulation. But it doesn't automatically undo a lifetime of believing they are lazy, unreliable, too emotional or somehow not good enough.

Those beliefs may have been reinforced over decades.

And sometimes they need to be revisited.

Revisiting Your Life with a New Understanding.

Perhaps one of the most valuable things we can help people with ADHD do is to begin looking at their lives from the position of understanding that they have ADHD.

 A way of making sense of experiences that may previously have felt confusing or shameful.

To begin noticing when ADHD is influencing their motivation, emotional responses, relationships or ability to get started.

To recognise that losing access to motivation does not necessarily mean they are lazy.

That becoming overwhelmed does not mean they are weak.

That being capable of achieving something one week does not automatically mean they can achieve it with the same ease the following week.

And perhaps most importantly, to begin separating their own understanding of themselves from the critical voices they have absorbed over the years.

Some of those voices may have come from parents, teachers, partners or employers.

Others may have become their own internal commentary.

And now, unfortunately, some may be reinforced by a wider public debate that can make people question whether their diagnosis or difficulties are legitimate.

I would like us to move towards something more useful.

Helping people understand their ADHD accurately. Helping them recognise where it affects them and where their strengths lie. Making effective treatment accessible and supporting them to develop a more compassionate, realistic understanding of themselves.

Because for someone who has spent decades struggling to understand why they can be so capable one moment and so stuck the next, that change in perspective can be profound.

And sometimes, with the right treatment and support, they really can begin to feel plugged back into life.

Connection Psychotherapy | Glasgow & Online

At Connection Psychotherapy, we work with adults experiencing ADHD-related difficulties, anxiety, emotional dysregulation, burnout and longstanding patterns of self-criticism. Our therapeutic approach helps people understand the patterns shaping their lives and develop ways of responding to themselves with greater clarity and compassion.