Most women I see are somewhere in perimenopause and have been told they are “going through the menopause” – or have been told the opposite, that they are too young for any of this. Both are unhelpful, because the two stages behave differently.
The short version: perimenopause is the years of hormonal turbulence leading up to your final period. Menopause is a single point in time, identified looking backwards, once twelve consecutive months have passed without one. Almost everything people call “the menopause” is in fact perimenopause.
Perimenopause
A transition, typically lasting four to eight years. Oestrogen and progesterone fluctuate erratically rather than simply declining.
Periods still happening, but changing
Symptoms come and go unpredictably
Pregnancy still possible
Menopause & after
A single point, confirmed after twelve months without a period. Average age in the UK is around 51. Everything after is postmenopause.
Periods have stopped
Hormone levels settle at a lower baseline
Natural conception no longer possible
I have been on both sides of this conversation. Perimenopause arrived for me in my early forties, announcing itself not with hot flushes but with brain fog. Later, following treatment for breast cancer, I experienced a medically induced menopause that arrived abruptly in a way perimenopause never had.
The two felt entirely different. That is worth saying plainly, because a great deal of the information available treats them as one continuous slide downhill, and they are not.
Dr Katy Kasraie, BMS-accredited Menopause Specialist
A third scenario worth naming
Discussions of this topic usually stop at two stages. There is a third. When ovarian function ceases before the age of 40, that is premature ovarian insufficiency – not early perimenopause. It is investigated differently, managed differently, and warrants specialist input, in part because the long-term implications for bone and cardiovascular health are more significant when oestrogen is lost that young.
Menopause can also be brought on suddenly by surgery involving the ovaries, or by chemotherapy and radiotherapy. When it happens this way there is no gradual transition – which brings its own particular difficulties, and its own particular need for support.
What the symptoms actually are
Here is something that surprises most people, including some doctors.
A study of a large cohort of perimenopausal and menopausal women found the most commonly reported symptoms were not hot flushes at all. They were fatigue (96%), memory problems (93%), difficulty concentrating (91%) and irritability (90%).
Hot flushes ranked eighteenth. Night sweats ranked fourteenth.
Hot flushes are the symptom everybody knows about, and they matter. But if you are waiting for them in order to take yourself seriously, you may be waiting a long time – and missing the ones that are already affecting your life.
Cognitive
Brain fog, difficulty concentrating, memory lapses, word-finding difficulty, a sense of not feeling like yourself
Mood & energy
Persistent fatigue, new or worsening anxiety, low mood, irritability, feeling overwhelmed, reduced confidence
Sleep
Waking in the early hours, difficulty falling asleep, night sweats, unrefreshing sleep
Physical
Hot flushes, irregular or heavier periods, joint pain and stiffness, palpitations, weight change, headaches
Intimate & bladder
Vaginal dryness, discomfort during sex, reduced libido, urinary urgency, recurrent urinary tract infections
Over thirty symptoms are recognised. Almost nobody gets all of them, and no two women get the same set.
How the two stages differ
During perimenopause, the defining feature is volatility. Hormone levels swing rather than settle, which is why mood changes and menstrual irregularity tend to be most pronounced here, and why symptoms can be severe one month and absent the next. This unpredictability is also why a single blood test tells you so little.
After menopause, what settles is the fluctuation – not necessarily the symptoms. This distinction matters, and it is frequently got wrong.
Worth knowing
Hot flushes and night sweats often peak in the first years after your final period rather than settling. In the largest study of its kind, women with frequent symptoms experienced them for a median of 7.4 years in total, and they persisted for 4.5 years beyond the final period. For women whose symptoms started early in perimenopause, the median duration was 11.8 years or more.
The authors’ conclusion was that women should be counselled to expect frequent symptoms could last more than seven years. If you have been told this all settles down once your periods stop, that is not what the evidence shows.
Genitourinary symptoms behave differently again. Vaginal dryness, discomfort and urinary problems tend to be progressive after menopause rather than self-limiting, because they are driven by sustained low oestrogen in the tissues rather than by fluctuation. These are the symptoms least likely to improve on their own, and among the most straightforward to treat.
What helps
Hormone replacement therapy remains the most effective treatment for vasomotor symptoms, and for many women improves sleep, mood and concentration alongside. It is available as tablets, patches, gels and sprays. The route matters: transdermal oestrogen, absorbed through the skin, carries a more favourable risk profile than oral because it bypasses the liver. Where suitable I prescribe transdermal oestrogen with body-identical micronised progesterone, dosed individually and reviewed properly.
Non-hormonal treatment matters for women who cannot take HRT, or would rather not – including those with a history of hormone-sensitive breast cancer. Several medications are used here, and it is worth being straightforward that some are prescribed off-label, as they are not licensed in the UK specifically for menopausal symptoms. Current guidance also advises against routinely reaching for antidepressants as a first-line treatment for hot flushes alone. Which option suits you is a decision we make together, having gone through what is actually known.
Local treatment for vaginal and bladder symptoms is safe for long-term use and highly effective. It can usually be used even by women who cannot take systemic HRT, which is worth knowing.
Lifestyle measures are not a consolation prize. Resistance training protects muscle and bone at exactly the point both start to decline. Adequate protein, attention to sleep, and reducing the cortisol load where you realistically can all make a measurable difference to how you feel.
Some women find acupuncture or mindfulness helpful, and there is no reason not to try them. If you are taking herbal supplements, please tell me – several interact with prescribed medication, and unregulated preparations vary considerably in both dose and purity.
Looking further ahead
Oestrogen does a great deal beyond regulating periods. As it falls, cardiovascular risk rises, bone loss accelerates, and metabolic changes become more pronounced – including shifts in fat distribution and insulin sensitivity.
None of this is cause for alarm. It is the argument for using this moment to look ahead. Menopause is, for many women, the first point at which they have a full picture of their own health risks – which makes it a good time to review blood pressure, cholesterol, bone health and metabolic markers rather than wait for something to declare itself. The decisions that shape health in your seventies are largely made in your forties and fifties.
What specialist care actually gives you
Menopause medicine is a specialism, and accreditation exists for a reason. As a Menopause Specialist accredited by the British Menopause Society, I prescribe against current evidence rather than received wisdom – which matters in a field where the guidance has changed substantially and a great deal of what patients are told is a decade out of date.
In practice, the difference is time and precision. An initial appointment here runs 45 to 60 minutes, not ten. That is long enough to take a proper history, connect symptoms that have been treated separately for years, review what has already been tried and why it did not work, and leave you with a written plan rather than a verbal one.
It is worth booking if any of this is familiar:
- You have been told your bloods are normal, or that you are too young for this
- You are already on HRT but it is not working, and nobody has reviewed the dose or the route
- Your symptoms have been treated one at a time – antidepressants for the mood, something else for the sleep – without anyone joining them up
- You have a history that makes the decision more complicated, such as previous breast cancer, and want it discussed properly rather than avoided
- You want to understand the actual risks and benefits before deciding, not be talked into or out of anything
- You would like this looked at alongside your longer-term bone, heart and metabolic health rather than in isolation
No referral is needed, and most major UK insurers are accepted. If it helps, jot down what changed and roughly when before you come – not an exhaustive diary, just a sense of what bothers you most.
Frequently asked questions
What is the difference between perimenopause and menopause?
Perimenopause is the transitional phase before your final period, marked by fluctuating hormones and changing cycles, typically lasting four to eight years. Menopause is the single point identified once twelve consecutive months have passed without a period. Most of what people describe as menopausal symptoms occur during perimenopause.
Do symptoms stop once my periods stop?
Often not, and this is commonly misunderstood. Hot flushes and night sweats frequently continue for years after the final period – persisting 4.5 years beyond it on average in women with frequent symptoms. Vaginal and bladder symptoms tend to progress rather than resolve. What does settle is the unpredictability.
Is HRT safe?
For most women under 60 starting within ten years of menopause, the balance of benefit and risk is favourable – but the honest answer is that it depends on you. Route matters: transdermal oestrogen avoids the small increase in clot and stroke risk associated with oral preparations. Body-identical micronised progesterone is not the same as the older synthetic progestogens used in the studies that generated most of the alarm. Existing cardiovascular risk factors are not automatically a barrier. A proper individual assessment is what makes this answerable, and it is a conversation worth having in full rather than in passing.
I had breast cancer. Can I still discuss treatment?
Yes, and it is a conversation I am well placed to have, having been through breast cancer treatment myself. Whether HRT is appropriate depends on your cancer type, your treatment and your individual risk – it is not a blanket no. Effective non-hormonal and local options also exist. What matters is that you are not left without options simply because the subject is difficult.
Can I get pregnant during perimenopause?
Yes. Ovulation still occurs, if unpredictably. Contraception is generally advised until age 55, or until menopause is confirmed.
Do lifestyle changes really make a difference?
They do, though not as a substitute for treatment where treatment is warranted. Resistance training, adequate protein, sleep and stress reduction all affect how you feel now and how well you age – particularly for bone density, muscle mass and cardiovascular health.