You walk upstairs and forget why you're there.
You open your laptop to do one thing and, 45 minutes later, you've somehow started six other things instead.
Appointments disappear from your brain. The washing goes into the machine but never comes out. Work suddenly feels overwhelming. Noise irritates you. You're constantly losing things.
And that ability you once had to keep approximately 47 plates spinning at once?
Gone.
Welcome to perimenopause brain fog.
Or is it?
An increasing number of women are discovering in their 40s and 50s that some of the difficulties they've always put down to being forgetful, disorganised, overwhelmed or simply "bad at adulting" may actually be signs of ADHD.
And for some women, perimenopause seems to be the point at which the coping mechanisms they've relied on for decades simply stop working.
Recent ITV News coverage has highlighted women receiving ADHD diagnoses during perimenopause after finding that everyday life suddenly became much harder to manage.
So what's going on?
Why can ADHD be missed in women?
When many of us picture ADHD, we still imagine the stereotypical hyperactive schoolboy who can't sit still.
But ADHD doesn't always look like that.
Women can experience more subtle or internalised difficulties, particularly around attention and executive function, and research has identified gender bias, different symptom presentations and compensatory strategies as reasons ADHD may be overlooked in girls and women.
Instead of bouncing around a classroom, a girl with ADHD might have been:
- constantly daydreaming
- losing things
- leaving homework until the last minute
- struggling to organise herself
- forgetting instructions
- becoming easily overwhelmed
- chronically late
- intensely focused on things she loved but unable to start boring tasks
- working incredibly hard to appear organised
And she may have developed strategies to compensate.
Lists. Calendars. Routines. Working late. Setting seventeen alarms. Double-checking everything, or simply putting in far more effort than everybody around her realised.
By adulthood, those coping mechanisms may be so well established that nobody — including the woman herself — considers ADHD.
Until something changes.
Then perimenopause arrives
This is where researchers are becoming increasingly interested.
During perimenopause, oestrogen levels don't simply decline neatly and predictably. They fluctuate.
Oestrogen interacts with brain systems involved in cognition and neurotransmitters including dopamine — one of the chemicals implicated in ADHD.
Recent scientific reviews suggest hormonal transitions can exacerbate ADHD symptoms in some women, although researchers are clear that this is still an under-studied area and much more evidence is needed.
One recent review specifically examining ADHD medication during perimenopause and menopause describes women experiencing worsening inattention, emotional dysregulation, anxiety, depression, brain fog and memory problems during this stage of life.
That can create what one GP interviewed by ITV described as an “unravelling”.
The systems you've built to keep everything together suddenly aren't quite enough anymore.
“I used to be able to cope. Why can't I anymore?”
This may be one of the most confusing parts.
- Nothing obvious has changed.
- You still have the same job.
- The same house.
- The same family.
- The same responsibilities.
Yet suddenly everything feels much harder.
In the ITV report, one woman described reaching her late 40s and unexpectedly struggling with ordinary tasks such as paying bills, remembering things and juggling work and children. She eventually received diagnoses of both ADHD and autism.
For someone who has spent decades apparently functioning perfectly well, that can be bewildering.
But an ADHD diagnosis in your 40s doesn't necessarily mean you've suddenly developed ADHD.
Perimenopause doesn't cause ADHD.
ADHD is a neurodevelopmental condition, meaning its origins are earlier in life.
What may happen is that hormonal changes, sleep disruption and increased cognitive demands make previously manageable ADHD traits much harder to compensate for.
In other words, perimenopause may help expose something that was already there.
The awkward problem: ADHD and perimenopause can look remarkably similar
Here's where things get complicated.
Both can involve:
Poor concentration
You read the same paragraph three times and still haven't absorbed it.
Forgetfulness
Keys. Appointments. Names. Why you opened the fridge.
Brain fog
Your brain feels as though it's operating through treacle.
Difficulty organising things
Tasks that once felt straightforward suddenly seem enormous.
Emotional changes
Irritability, overwhelm and difficulty regulating emotions can occur.
Sleep problems
Which then make concentration and memory even worse.
Anxiety and low mood
Again, these can accompany both.
NHS information for women waiting for ADHD assessment similarly notes overlap including brain fog, poor concentration, fatigue, emotional sensitivity, difficulties with planning and organisation and reduced ability to cope with pressure during perimenopause.
So how on earth are you supposed to know which one you're experiencing?
One useful question: was any of this there before perimenopause?
This can provide an important clue.
ADHD doesn't suddenly begin at 47.
So think back.
- Were you always losing things?
- Did teachers call you dreamy or easily distracted?
- Did homework take hours because you couldn't get started?
- Were you perpetually late?
- Did you regularly forget appointments?
- Was your bedroom chaotic?
- Did you procrastinate until panic kicked in?
- Have you always needed deadlines to make yourself act?
- Do you become completely absorbed in something interesting but struggle enormously with mundane jobs?
- Have you spent your adult life creating elaborate systems simply to stay organised?
None of these individually means you have ADHD.
Plenty of people do these things.
But if there's a lifelong pattern that has suddenly become much more difficult to manage during perimenopause, it may be worth discussing ADHD with a healthcare professional.
What if the problems really did start during perimenopause?
Then menopause itself could be a more likely explanation.
Problems with memory and concentration are common menopause symptoms.
And don't underestimate the effect of sleep.
If you're waking repeatedly because of night sweats, anxiety or insomnia, you're hardly giving your brain ideal conditions for remembering where you left your glasses.
Stress, depression, anxiety, thyroid problems, vitamin deficiencies, medication and other health conditions can also affect cognition.
That's why trying to diagnose yourself from a TikTok checklist isn't particularly helpful.
Does HRT help ADHD?
This is where we need to be careful.
There is interest in whether treating menopause symptoms with HRT could also help some women with ADHD — particularly where hormonal changes, poor sleep or mood symptoms are making existing difficulties worse.
But HRT isn't an ADHD treatment.
A 2026 review of ADHD treatment during perimenopause found that evidence specific to this group remains limited. There are currently no randomised controlled trials specifically examining ADHD medication in perimenopausal women, and researchers say controlled studies examining combinations of ADHD medication and menopausal hormone therapy are needed.
So we're nowhere near being able to say:
ADHD symptoms worse? Take HRT.
What we can say is that menopause and ADHD may need to be considered together, rather than treating them as completely unrelated issues.
What if my ADHD medication doesn't seem to work as well anymore?
This is another area researchers are beginning to investigate.
Some women report that their ADHD symptoms — or their response to medication — change during hormonal transitions.
But again, the research hasn't caught up with women's experiences.
A recent clinical review says treatment currently has to rely heavily on expert consensus and evidence extrapolated from younger people because specific trials involving perimenopausal women are lacking.
So don't change the dose yourself.
If you already have ADHD and notice a significant change around perimenopause, discuss it with whoever manages your ADHD medication and mention the hormonal changes you're experiencing.
That information could be relevant.
Could I have both?
Absolutely.
And this may be the most important point.
It doesn't necessarily have to be:
ADHD OR perimenopause.
It could be:
ADHD AND perimenopause.
You might have undiagnosed ADHD whose symptoms have become harder to manage.
You might have perfectly ordinary menopause-related cognitive symptoms and no ADHD whatsoever.
Or you may have known ADHD that suddenly feels different as your hormones change.
One doesn't exclude the other.
What should I do if this sounds horribly familiar?
Start by writing things down.
Not because we think you'll forget — although, frankly, there's a reasonable chance some of us will.
Try noting:
What's happening now:
Forgetfulness, overwhelm, inability to concentrate, losing things, emotional changes, difficulty starting tasks.
When it became worse:
Did it coincide with changing periods, hot flushes, sleep problems or other perimenopause symptoms?
What you were like earlier in life:
Think about school, university, early jobs and your 20s and 30s.
You might even ask parents, siblings or old friends what you were like growing up.
Then take that information to your GP.
If there's a lifelong pattern suggestive of ADHD, ask whether an ADHD assessment may be appropriate.
If symptoms appeared primarily alongside perimenopause, discuss those too.
You shouldn't have to decide which diagnosis you have before asking for help.
That's what assessment is for.
The Hot Again take
There's something almost painfully familiar about women reaching their 40s and discovering that something they've struggled with for decades has a name.
Many women have become extraordinarily good at coping.
We've written the lists.
Set the reminders.
Worked late.
Apologised for being forgetful.
Laughed about being chaotic.
Tried harder.
And then perimenopause arrives and suddenly the tricks don't work quite as well.
That doesn't mean every woman experiencing menopause brain fog has ADHD.
Most importantly, perimenopause doesn't suddenly give you ADHD.
But growing research suggests hormonal changes may make existing ADHD symptoms harder to manage, and that may help explain why some women aren't diagnosed until midlife.
So if you've reached your 40s and find yourself wondering:
“Why can I suddenly not cope with things I used to manage?”
it may be worth looking at the bigger picture.
Because sometimes it's menopause.
Sometimes it's ADHD.
Sometimes it's both.
And whichever it turns out to be:
