The 34 Symptoms of Perimenopause (And What to Do If You Recognise Yourself)
You might know about hot flushes. You might have heard about night sweats. But perimenopause has 34 recognised symptoms — and many of them are ones that women are never told to expect, or that they're told are "just stress" or "just getting older." The reality is that perimenopause is one of the most significant hormonal transitions a woman's body will ever go through, and understanding what's happening is the first step to getting the right support.
The problem with not knowing what to look for is that women spend years trying to manage symptoms that have a cause and a solution, without ever getting the right support. Here's the full picture, and what you can actually do about it.
Why There Are So Many Symptoms
Perimenopause isn't just about reproductive hormones. Oestrogen receptors exist throughout the body — in the brain, gut, cardiovascular system, skin, joints, and urinary tract. When oestrogen begins to fluctuate and decline, the effects are felt everywhere. Progesterone, which begins to decline even earlier than oestrogen, has its own wide-ranging effects — particularly on sleep, mood, and neurological function. And the interplay between these hormones and others — thyroid, cortisol, insulin — means that perimenopause can create a cascade of symptoms that seem completely unrelated but share a common hormonal root.
This is why perimenopause is so frequently missed or misdiagnosed. A woman who presents with anxiety, poor sleep, fatigue, and joint pain may be referred to a mental health practitioner, a rheumatologist, or simply told her blood tests are normal. Without understanding the hormonal context, the pieces don't fit together. With it, they tell a coherent and treatable story.
The 34 Symptoms of Perimenopause
The 34 symptoms, as established by the British Menopause Society and widely referenced in menopause literature, include: hot flushes, night sweats, irregular periods, heavy or lighter periods, mood changes (depression, anxiety, irritability), brain fog and memory problems, sleep disturbance, fatigue, joint pain and muscle aches, headaches and migraines, heart palpitations, changes in libido, vaginal dryness, bladder urgency or incontinence, urinary tract infections, hair thinning or loss, dry or itchy skin, brittle nails, weight gain (particularly abdominal), bloating, digestive changes, electric shock sensations, tingling in the hands and feet, body odour changes, breast tenderness, gum problems and mouth changes, reduced ability to handle stress, low confidence, loss of sense of self, difficulty concentrating, dizziness, allergies or new sensitivities, tinnitus (ringing in the ears), and an irregular heartbeat.
Reading this list, many women experience a moment of recognition — sometimes relief — at realising that what they've been experiencing has a name and a cause. The symptoms that most often catch women off guard are the neurological and psychological ones: brain fog, anxiety, low mood, loss of confidence, and the sensation of simply not feeling like themselves anymore. These are not signs of a mental health condition; they're direct effects of fluctuating oestrogen on the brain, and they improve with appropriate hormonal support.
Heart palpitations are another symptom that frequently causes alarm. Women often go to their GP with what they describe as a racing or fluttering heart and undergo cardiac investigations, only to be told everything is normal. In most cases, these palpitations are driven by oestrogen fluctuations and are benign — but they're genuinely distressing and deserve to be taken seriously as part of the perimenopausal picture.
Digestive symptoms including bloating, changes in bowel habits, and new food sensitivities also become more common in perimenopause. Oestrogen has a direct influence on gut motility and the gut microbiome, so as it fluctuates, digestive function is often affected. This is explored further in my post on how the gut-hormone connection drives hormonal symptoms.
The Thyroid-Perimenopause Overlap
One important complication in the perimenopause symptom picture is the significant overlap with thyroid dysfunction. Fatigue, weight gain, brain fog, depression, cold intolerance, hair thinning, and mood changes are common to both hypothyroidism and perimenopause. Without comprehensive testing, it's nearly impossible to tell which is driving which — and in many women, both are present simultaneously.
I always recommend a full thyroid panel (not just TSH) for women presenting with these symptoms, because untreated hypothyroidism will undermine any hormonal support you put in place. Elevated thyroid antibodies are also worth checking for, as Hashimoto's thyroiditis is significantly more common in perimenopausal women. You can read more about the thyroid connection in my post on hypothyroidism and what to do when results come back normal.
The Hormonal Cascade: Oestrogen, Progesterone, and Cortisol
Understanding the timing of hormonal changes helps explain why the perimenopause experience varies so widely between women. Progesterone is typically the first hormone to decline — beginning as early as the mid to late 30s when ovulatory cycles start to shorten. This progesterone decline produces the early perimenopause pattern of heavier periods, worsening PMS, anxiety, and poor sleep. It's often at this stage that women are told their hormones are normal because their oestrogen is still adequate.
Oestrogen follows a more erratic course — spiking and dropping unpredictably rather than declining linearly. These oestrogen surges can produce breast tenderness, mood swings, bloating, and headaches, while the drops cause hot flushes and cognitive symptoms. Meanwhile, the stress load of midlife — often the peak of career and family demands — keeps cortisol elevated, further suppressing progesterone production and impairing thyroid function. It's a perfect hormonal storm, and it's entirely real. The oestrogen dominance that can occur in early perimenopause is explored further in my article on the symptoms of oestrogen dominance most women are told are normal.
When Does Perimenopause Start?
Perimenopause often begins in the early to mid 40s, but it can start in the late 30s — and occasionally even earlier. The average duration of the perimenopausal transition is four to ten years, which means many women are navigating this phase for a significant portion of their midlife. The transition ends when a woman has gone 12 consecutive months without a period, at which point she is considered to have reached menopause.
Symptoms frequently begin years before periods become irregular, which means many women are dismissed when they present with early symptoms because their cycle "hasn't changed yet." If you're in your late 30s or 40s and recognise yourself in this list, it's worth asking your healthcare provider about perimenopausal assessment — regardless of whether your periods are currently regular. Early perimenopause is discussed further in my post on perimenopause at 40 and the early signs most women miss.
Distinguishing Perimenopause from Other Conditions
Several conditions can mimic perimenopausal symptoms and should be ruled out or assessed alongside hormonal testing. These include: thyroid dysfunction, iron deficiency anaemia (extremely common in women with heavy perimenopausal periods), coeliac disease, vitamin D deficiency, autoimmune conditions, and mood disorders. A thorough clinical assessment considers all of these possibilities rather than defaulting to either a hormonal or a non-hormonal explanation alone.
Gut health is also worth considering. The gut microbiome influences oestrogen recirculation through the estrobolome, and a dysbiotic gut can worsen perimenopausal hormonal imbalance. I've written more about this in my post on how the gut-hormone connection can drive your hormonal symptoms.
What to Do If You Recognise Yourself Here
The first step is getting properly assessed. This includes having your hormones tested — ideally including oestradiol, progesterone (at the correct time in your cycle), FSH, LH, and thyroid function — along with other relevant markers like ferritin, vitamin D, and cortisol. Symptoms alone can point strongly in the direction of perimenopause, but comprehensive testing rules out other conditions and helps determine the appropriate support.
From there, the approach depends on your symptom picture, health history, and preferences. Options range from targeted nutritional and herbal support, to evidence-based lifestyle changes that make a significant difference to symptom load, to menopausal hormone therapy (MHT) which many women find life-changing. MHT carries far lower risks than was previously believed for most women, and the decision about whether it's right for you deserves a thorough, unhurried conversation with a practitioner who is up to date with the current evidence.
You don't have to white-knuckle your way through this transition. If you'd like to talk through what you're experiencing and figure out what support makes sense for your situation, book a free introductory call and let's get you the answers and support you deserve.
Building Your Support Team
Navigating perimenopause effectively often requires more than a single practitioner. While your GP is an important starting point for hormonal testing and consideration of MHT, a naturopath can provide the time, depth, and integrative perspective to address the full complexity of your situation — including nutritional status, gut health, cortisol, thyroid function, and the lifestyle factors that significantly influence how you experience the transition.
Some women also benefit from working with a psychologist (particularly if mood and cognitive symptoms are prominent), a pelvic floor physiotherapist (for urinary and pelvic symptoms), or an integrative GP who is comfortable with both conventional hormonal assessment and nutritional medicine. The right support team depends on your specific symptom picture and what matters most to you in terms of quality of life.
What I consistently hear from women once they get the right support is that they wish they'd sought it sooner. The perimenopausal transition doesn't have to mean years of declining energy, disrupted sleep, and feeling unlike yourself. With the right assessment and personalised support, most women see significant improvement within weeks to months. If you're ready to take the next step, book a free introductory call to find out what's possible for you.