"Is it PMS or is it me?" Neither. It's both, and it has a name

He asks you from the kitchen doorway, keys still in his hand: whether you're all right.

And you answer the usual thing, without thinking, almost with relief: that your period is about to start.

He's reassured. He goes off to put the keys down. And you stay there scrubbing something that was already clean, with the sentence repeating itself on its own.

Because you said it to close the conversation. And because you don't know whether it's true.

First things first, and this one is serious

There's no symptom list here, there are no criteria and there's nothing to score. That's on purpose: that's consulting room material, not blog material.

What there is, is the shape of the question, which is badly built, and what's known about the three possible answers. This describes how the pieces line up, not whoever is reading. Recognizing yourself here doesn't mean you have anything.

The question offers two boxes, and three are needed

The way it gets asked, the question forces a choice between two things.

Box one: it's the hormones. And then it doesn't count, it isn't real and it'll pass.

Box two: it's me. And then it's character, and it does count, and it doesn't pass.

Underneath, both boxes say the same thing: that if it belongs to the body it isn't yours, and that if it's yours it's a fault. That's why the question never gets answered. It isn't built to be answered.

And a third shape is missing, the one that best describes what a great many women report.

The third shape: something already there that turns up its volume for a few days

This has a name in the clinic and it's called premenstrual exacerbation. Put plainly: it isn't that something new appears on those days, it's that something that was already there gets louder.

Notice what that changes. If something turns its volume up, it was there before. And if it was there before, it isn't an invention of those days. And if it goes up, it isn't the same all month either.

Both halves of the question were true. What was wrong was the or.

And that shape has been measured, though not here

There's a review that went looking for exactly this. It's by Nolan and Hughes, in 2022, in Archives of Women's Mental Health: they gathered the studies in which women with a diagnosis already in place had been asked daily, for weeks, to see which of them got worse in the days around menstruation. They found thirty-five. In several conditions the signal was clear.

Not one of those thirty-five was on ADHD. It isn't that it was tested and came out no: it's that at that bar, a diagnosis already made and daily follow-up, there was no ADHD study able to get in.

The honest part: no conclusion about ADHD comes out of that, in either direction. A missing study proves nothing. What it shows is where we are, and we are right at the very beginning.

So the shape exists and is described elsewhere. That it's the one explaining yours is a reasonable possibility, not a result.

The fourth shape, the one that starts and ends with those days

There's another, different thing: a distress that appears on those particular days and goes when the period arrives, and that in some women is so intense that it changes their life those weeks.

When it reaches that point, it has a clinical name of its own and it gets assessed in an appointment, with criteria and with a log in front of you. Those criteria aren't described here and there'll be no attempt to fit you into them, because that is exactly what a piece of writing must not do.

What is worth knowing is that it exists, that it can be assessed and that it isn't the same as the shape before it. If what you go through on those days is genuinely flooring you, that conversation is with your primary care doctor, your gynecologist or mental health services. And asking for it isn't overreacting.

Why this doesn't get separated at home

Because the three shapes look very alike from the inside and in the moment.

The only thing that separates them is the picture across two months: what was there in the weeks in between, how long it lasted, when it went. And memory doesn't have that, because memory from three weeks ago hands the recollection back already arranged in favor of whatever you believed.

That's why all the serious studies ask on the same day, never afterwards. And that's why the answer to the question in the title isn't given by an article: it's given by a log read by someone who knows how to read it.

How to keep a log you don't abandon has its own article on this blog.

And the month doesn't do the same thing to everyone

It's worth saying, because the opposite story does damage too.

The largest piece of work there is on whether the month changes how the head works is by Jang, Zhang and Elfenbein, in 2025, in PLOS One. They added up more than a hundred studies and close to four thousand women. They were looking for a pattern of attention, memory and organization spread across the month, and none turned up that held.

With that, the cliché of the woman who loses her head a few days a month is left with nothing under it the moment you look from a distance.

The honest part: that's the general population, and it says nothing about what happens when there's already something underneath. That is precisely the empty box.

What comes out of it is useful anyway: if it shows a lot in you, that isn't the female norm. It's your pattern, and it deserves to be looked at as yours and not as a cliché.

Why the question comes back every month

Because every time it happens, it gets answered with what's to hand at that moment, which is memory.

And memory does a very characteristic thing: it keeps the most recent and the strongest. If the last episode fell far from your period, the answer comes out that it's you. If it fell close, the answer comes out that it was your period. And both times the answer looks obvious.

That's why the question makes no progress in years. It isn't that you don't think about it enough: it's that every month it gets settled from scratch, with a sample of one.

What breaks that loop isn't thinking about it better. It's having two months in a row in front of you, written on the same day they happened.

What gets taken to the appointment

And in case it helps, because this is a conversation many women report having had badly.

In an appointment you don't need a label or a theory. What can be worked with is this: what happens, how long it lasts, how often it comes back, and how the weeks in between were.

It helps to tell consequences instead of adjectives. A day of work lost, one particular argument, a plan that fell through. That can be looked at. "I'm awful on those days" can be filed away.

And if you get answered with a sentence that closes the subject, another appointment can be asked for, or you can ask for the log to be looked at. Asking twice isn't being a nuisance.

The sentence that saves you the conversation and takes it away from you

"It'll be your period" does two things at once, and that's why it hurts so much.

When someone else says it, it closes the subject. It answers you before listening to you, and decides along the way that what you said didn't need taking seriously.

When you say it, it does the same to you. It saves the whole conversation, including the one you were about to have with yourself. And sometimes it's true, and it saves it anyway.

The uncomfortable part isn't that the sentence is false. It's that it works just as well for explaining as for not looking.

What doesn't get told about those days

Writing an enormous message, sending it, and rereading it two days later without quite recognizing whoever wrote it.

Counting the days backwards to see whether it adds up, and feeling relief if it does, and the relief itself being uncomfortable.

And the one that really weighs: having broken something on those days that the explanation doesn't fix. A friendship gone cold, a sentence still standing, a decision made in two hours. Knowing where it came from doesn't put it back.

There's no moral behind that. An explanation isn't a receipt, and it isn't a conviction either.

The two things, and which is which

That there are forms of distress that turn their volume up around menstruation is measured in several conditions, and with serious method.

That ADHD is one of them is what nobody has checked yet with that method.

That any woman loses her head on those days doesn't survive the large analysis.

And the question in the title has no answer in that shape. In the other shape, the one with three boxes, you can start looking.

This is educational support, a complement to medical care and never a substitute for therapy or treatment. Nobody is diagnosed here.

And if reading this you've thought you've been asking yourself that question alone for years, the Map doesn't answer it, but it leaves it better put. It's free, it takes a few minutes, and it hands your own tangle back to you, in order.

And one more thing, set apart from everything above. If you find yourself thinking you don't want to be here, that doesn't wait for an appointment: tell someone today, a professional or a crisis or emergency service in your country. And if something is getting away from you, with drink, with food, with whatever it is, that's one to take to a professional too. It isn't that there's no room here for how you're feeling: it's that they can help you better there than here. No talking around it, and nothing to be ashamed of.

Where this comes from

• Nolan and Hughes (2022). Archives of Women's Mental Health.
• Jang, Zhang and Elfenbein (2025). PLOS One.
• Roberts, Eisenlohr-Moul and Martel (2018). Psychoneuroendocrinology.