TL;DR: Perimenopause and ADHD share symptoms, so brain fog alone can’t tell you which one you have. During the menopausal transition, ADHD symptoms can get “unmasked.” If symptoms persist, ensure all common contributors are tested and addressed. New research is showing that hormones may help ADHD related symptoms; the findings show improvement of ADHD symptoms between 65-99%.
Jane’s story
Jane is 47. Like many of her friends, she is in the throes of perimenopause, a state of health she did not know about until recently.
With irregular periods and never enough sleep, she is forgetting words and losing her train of thoughts.
Just last week, her teenager got evaluated for ADHD. While sitting through the questions, she thought: “I’d answer yes to half of these.”
Now she’s stuck with a different question. Are her cognitive symptoms perimenopause, or does she have ADHD?
What menopause brain fog looks like
Forgetfulness, trouble concentrating or holding information in your head, mood and motivation changes, reduced ability to multi-task are among common symptoms reported by women undergoing the menopausal transition.
A 2026 systematic review and meta-analysis pulled together 26 studies and 9,428 women and found worse cognitive functioning in perimenopause compared to premenopause — though the size of the effect depended on how researchers defined menopause stage and measured cognition. [1]
Menopause-related cognitive change is real.
But “brain fog” is a description of the experience. It doesn’t tell you the cause.
ADHD can look almost identical
Common symptoms include distractibility, forgetfulness, reduced working-memory, trouble organizing, losing things, trouble starting or finishing tasks, feeling buried by competing demands.
Similar list.
Asking “what symptoms do I have” doesn’t easily distinguish between the two.
A 2025 review looked at ADHD across female reproductive stages and found that almost no research has specifically studied ADHD during menopause. [2]
As with many other subjects in women’s health, ADHD, especially during the menopausal transition, simply has not been studied.
The question that can help us get some clarity is qualitative: what symptoms you have today, which ones are new and which have always been there.
ADHD doesn’t start at 47
It’s a neurodevelopmental condition.
If you’re considering it for the first time in midlife, we have to look backward.
Do you have a history of procrastination, losing things, daydreaming, trouble starting boring tasks, unfinished projects and doing everything last-minute?
But wait, there is a trap. Achievement isn’t proof against ADHD. A woman can have graduated top of her class, run a department, raised three kids — and still have ADHD.
Getting collateral history, when possible, is immensely helpful. Asking your parents, siblings, friends, even checking old report cards can be useful.
How did you manage for so long?
Competent women are good at compensating. They overprepare, run on anxiety and urgency and can stay up late to finish what could have been done much sooner. They build elaborate lists and calendars, check everything twice and often gravitate toward work that is interesting enough to hold her attention without effort.
From the outside, the story is: she’s so organized.
But from her perspective, it is more like: I have to work twice as hard to make sure nothing drops.
A 2026 qualitative study of eight women with ADHD going through perimenopause found a common thread: coping strategies no longer work.
Systems that they created and relied on for decades stop working, and that collapse pushes them toward a diagnosis. [3]
Tiny study. Only eight women, recruited from an ADHD community online. But this is real testimony about what ADHD can feel like.
Why your usual compensation strategies don’t work anymore
When her usual strategies fail, she often experiences it as: why can’t I do this anymore. What’s wrong with me? Am I losing my edge?
A 2026 clinical review describes exactly this — midlife hormonal changes potentially exacerbating or unmasking ADHD that was always there, and stresses how much a detailed childhood history matters when ADHD comes up for the first time in midlife. The same review is appropriately blunt about how little menopause-specific treatment evidence exists. [4]
A highly competent woman can mistake losing her compensation strategies for losing her capability. Those are not the same thing, and mistaking the former for the latter can lead to a loss of confidence that can be hard to recover from.
So, which one is it?
Of course, not every woman with new concentration problems in perimenopause has undiagnosed ADHD at the core.
If the pattern is genuinely new — ie, no convincing history before this — menopause-related cognitive change deserves the first look.
Sleep disruption, hot flashes, stress, mood changes take a toll on cognition. Back to Bangle 2026 [1]: perimenopausal cognitive change happens without ADHD in the picture at all.
Subjective cognitive complaints and objective testing don’t line up well. A 2025 meta-analysis found only small or nonsignificant relationships between what women reported feeling and how they actually performed on cognitive testing. [5]
That doesn’t mean her brain fog isn’t real because the test came back normal. It means she can be meaningfully off her own baseline while still scoring within the normal range for the population.
Different but important.
Now the other direction. Maybe it is ADHD, unmasked. She didn’t develop it at 47 — she had it all along, managed it well, and perimenopause tore off the mask that was covering it up.
Now let’s bring the pieces together: Wynchank & Kooij, the qualitative study on collapsing coping strategies.
A 2025 study of 656 women — 245 with diagnosed ADHD — found that after correcting for multiple comparisons, the ADHD group didn’t report worse menopausal symptoms than women without ADHD. [6]
So: the idea that perimenopause unmasks compensated ADHD is plausible and clinically compelling.
It can also be something else
For the sake of being thorough and not missing other common conditions, we should consider a few other things.
Sleep disorders, depression, anxiety. Even medication side effects and thyroid disease. Make sure all of those have been addressed.
If you’ve addressed those and still feel something about your brain has changed — then we need to pay attention to age and trajectory.
A 47-year-old with word-finding trouble during a rough perimenopause is a different picture than a 63-year-old with a slow, progressive decline in memory.
Ordinary testing may not give us the answer we need.
Subjective cognitive decline — feeling worse than your test scores suggest — typically becomes more clinically important as women get older.
A review of 46 longitudinal studies found specific features that predict progression toward real impairment: onset at 60 or later, persistence, severity, the person’s own concern about it, trouble with complex daily activities, and someone else independently noticing the change. [7]
Longitudinal research also links subjective decline in older adults to higher future risk of mild cognitive impairment and dementia. [8]
But just because you are younger than 60 does not mean that we don’t take your persistent symptoms seriously.
What I can tell you, and what I can’t
I’m not the person who diagnoses ADHD. That’s what a psychiatrist, a psychologist, or a clinician specifically trained in adult ADHD would do.
A thorough ADHD evaluation includes:
– a detailed clinical interview against actual diagnostic criteria;
– evidence that several symptoms were present before age 12;
– an assessment of how symptoms affect functioning across more than one setting; collateral history—such as a parent, partner, school records or other records—where available;
– and consideration of other conditions that could better explain the symptoms.
Screening tools such as the ASRS can be useful starting points, but they cannot diagnose ADHD on their own. Computerized attention or neuropsychological testing may sometimes add information, but there is no single test that confirms or rules out ADHD.
If it is ADHD, a diagnosis can certainly bring clarity and relief.
But the medications for ADHD have real side effects. Stimulants like methylphenidate, Adderall, and Vyvanse can bring appetite loss, insomnia, a faster heart rate, jitteriness, irritability as the dose wears off.
Anyone with cardiac risk factors needs that conversation with their prescriber.
Non-stimulants like atomoxetine, bupropion, guanfacine, have their own list: nausea, fatigue, dry mouth, lowered seizure threshold with bupropion, sedation with guanfacine.
Especially worth knowing is that stimulant side effects like disrupted sleep and anxiety can stack directly on top of what perimenopause is already doing.
Your prescriber should know both pictures.
Now, hormones.
Hormones can meaningfully help mood, sleep, and hot flashes.
When those improve, cognitive complaints that were being driven by bad sleep or vasomotor symptoms can improve too — not because you fixed ADHD, but because you fixed what was helping mask it.
One recent survey of 453 women on hormone treatment found that transdermal estrogen and testosterone were associated with the highest reported improvement across ADHD-type symptoms — inattention, impulsivity, emotional dysregulation — while progesterone-containing treatments did not do as well consistently. [9]
This preprint, not yet peer-reviewed, reported improvement of 85–92% on transdermal estrogen across domains, 92–99% on testosterone, and 59–65% on oral progesterone.
One thing worth noting: roughly a third of women on progesterone said their symptoms got worse.
Note that this study is self-reported and there was no untreated comparison group. Most women were on more than one hormone at once, so no single formulation’s effect is isolated.
Still, it’s the first real look at this question, and worth watching as it moves toward publication.
So: we can treat what hormones treat and see what’s left over.
If trouble with attention, organization, and follow-through is still there once sleep, depression, anxiety and other symptoms like hot flashes are handled, that’s your signal to get a specialist evaluation.
Neither dismiss, nor rush to label it.
Jane started with “I have menopausal brain fog.” Her kid’s evaluation made her wonder about ADHD.
By the end, she has better questions than either label gave her:
What’s new, and what was always there? What did it take for her to hold this together? What changes once sleep and hot flashes are addressed? Is this stable, getting better, or getting worse?
In the end, it might be just menopause. Or it might be ADHD that she compensated for until perimenopause made compensation impossible. It might be both.
There is another possibility. If it keeps getting worse despite addressing all the contributors we addressed, it might be something else, possibly more concerning about long term brain health.
Consider taking the Brain Health Assessment HERE.
Women have had their symptoms waved away for decades. The last thing we need is a new, more sympathetic way to wave them away again.
Brain fog is a symptom. My job is figuring out what’s under it.
References
- Bangle et al., 2026 — https://pubmed.ncbi.nlm.nih.gov/41066270/
- Osianlis et al., 2025 — https://pmc.ncbi.nlm.nih.gov/articles/PMC12145478/
- 2026 qualitative study — https://www.tandfonline.com/doi/full/10.1080/18387357.2026.2673126
- Wynchank & Kooij, 2026 — https://pubmed.ncbi.nlm.nih.gov/42018215/
- 2025 meta-analysis (subjective vs. objective cognition) — https://pubmed.ncbi.nlm.nih.gov/41122799/
- Chapman et al., 2025 — https://pmc.ncbi.nlm.nih.gov/articles/PMC12569137/
- Systematic review, SCD predictors — https://pubmed.ncbi.nlm.nih.gov/37979370/
- Longitudinal meta-analysis — https://pubmed.ncbi.nlm.nih.gov/34748154/
- Perceived Effects of Hormone Treatment (HRT) on ADHD Symptoms in Perimenopausal and Menopausal Women: A Cross-Sectional Survey (preprint) — https://www.researchsquare.com/article/rs-10627697/v1
