You are tired in a way sleep does not fix. Your periods have started doing their own thing. You wake at 3am for no reason, your knees ache on the stairs, you lose words mid-sentence, and you snap at people you love. You mention one of these to a doctor and hear "stress". You mention another and hear "age".
Nobody puts them together. That is the problem.
A transition, not a moment
Perimenopause is one of the most complex stages of a woman's life, and one of the most overlooked. It is not a single moment or a diagnosis. It is a change in hormones that unfolds over years, as the ovaries gradually work differently. Estrogen and progesterone rise and fall unpredictably, and that touches the brain, the nerves, metabolism, sleep, the joints and mood.
Menopause itself is one point in time: twelve months in a row without a period. A major clinical review in The BMJ puts the median age of menopause at 51, and says perimenopause usually starts several years before, most often between 45 and 55, and lasts about seven years on average. Symptoms can begin earlier, sometimes in the late thirties or early forties. In Pakistan, the Pakistan Menopause Society's 2026 recommendations put the average age of menopause at 45 to 49, younger than among white women, so for many women here the change starts sooner than those figures suggest.
Why they get missed
Most women have several symptoms at once, and each one on its own looks like something else. Low mood looks like depression. Tiredness looks like burnout. Aching joints look like age. Forgetting things looks like stress.
Research shows these symptoms are driven by biology and are very common. Gaps in training and awareness mean they are still often missed, or put down to something else.
The symptoms, one by one
Mood, worry and irritability. Estrogen helps regulate serotonin, dopamine and GABA, the brain chemicals that shape mood, worry, thinking and sleep. As hormone levels rise and fall, many women feel irritable, anxious, low or up and down. The BMJ review describes these mood changes as a core feature of the menopause transition, not just a reaction to life.
Sleep. A narrative review in the Journal of Clinical Medicine found that around 70 to 90% of women have sleep problems during the menopause transition, including trouble falling asleep, waking often and waking unrefreshed. It happens even to women who have always slept well, and is closely tied to hormones' effect on the body clock and temperature control.
Tiredness. Large surveys suggest that physical and mental exhaustion affects around three-quarters or more of women in perimenopause. An international analysis summarised by The Menopause Society found fatigue and exhaustion among the most commonly reported symptoms across countries and cultures. Rest alone rarely fixes it, because it comes from lost sleep, hormone changes and a lower tolerance for stress all at once.
Hot flushes and night sweats. These are the best-known symptoms, but only one part of the picture. They happen when changing estrogen unsettles the brain's thermostat. A large global meta-analysis in BMC Public Health, covering more than 480,000 women, found they affect around 50 to 80% of women during the transition. Night sweats in particular break sleep, which feeds tiredness and brain fog.
Joint and muscle pain. One of the most common symptoms, and one of the least recognised. Estrogen calms inflammation and supports connective tissue, so as it swings, stiffness and aches can follow. The same BMC Public Health meta-analysis found joint and muscle pain to be the most commonly reported symptom of all, affecting around 65% of women, more than hot flushes in many populations. The Aches That Came From Nowhere goes deeper.
Brain fog. Forgetfulness, trouble concentrating, slower thinking and losing words. Clinical reviews link it closely to hormone changes and poor sleep, and describe it as usually temporary. The BMJ review counts thinking changes as a recognised feature of the transition, not a sign of permanent decline. Brain Fog, or Something to Check? explains when to ask for a closer look.
Changes to your periods. Often the earliest visible sign. Periods may become irregular, heavier, lighter or unpredictable as ovulation becomes less regular. Almost every woman in perimenopause has some change in her cycle, yet it is rarely discussed as part of the bigger hormonal picture.
Sexual and intimate changes. Falling and changing estrogen affects the stretch, moisture and blood flow of vaginal tissue, which can bring dryness, discomfort and changes in desire. Systematic reviews estimate that 20 to 60% of women have low desire or vaginal symptoms during the transition, though they are often not mentioned and often not treated.
Why naming it early matters
Many women spend years looking for answers while each symptom is treated on its own. Experts increasingly say that recognising perimenopause earlier can improve care, spare women unnecessary tests, and confirm what they have been feeling all along.
Understanding these symptoms is not about turning a natural stage of life into an illness. It is about clarity and choice. When you know why something is happening and how common it is, it is easier to speak up and to ask for the right help.
Where tracking comes in
Perimenopause often shows itself in patterns over time, not in one symptom on one day. A simple, private record of your sleep, mood, energy, cycle and physical symptoms makes the conversation with your doctor clearer. Roshara's daily check-in covers mood, energy, sleep and hot flushes in about thirty seconds, with a box for everything else.
If you are not sure where you are in the change, the Where am I? tool is a good first step, and Your Memory Is a Poor Witness explains what to note before your appointment.