When does perimenopause start?

Typically several years before the final menstrual period, often in a woman's forties, though it varies. The defining feature is change — irregular cycles and unpredictable symptoms.

What symptoms can mimic menopause?

Thyroid disease, depression and anxiety, sleep apnoea, anaemia and iron deficiency, and medication effects can all produce overlapping symptoms, which is why assessment matters.

Is bleeding after menopause normal?

No. Any bleeding a year or more after the final menstrual period needs medical assessment.

Perimenopause Symptoms: What to Expect and When

Perimenopause — the years leading up to the final menstrual period — is a transition, not a switch. Hormone levels fluctuate unpredictably, and symptoms can begin years before periods stop. Many women do not recognise what they are experiencing because the symptoms are diffuse and easily blamed on stress or ageing. This guide describes what to expect, and — just as importantly — what can mimic it. Educational information only, not medical advice.

The defining feature: change. Irregular cycles, unpredictable symptoms, some months fine and others not. That inconsistency is itself the signature of perimenopause.

The vasomotor symptoms

The most characteristic and recognisable group:

Hot flushes — sudden waves of heat, often with sweating and flushing of the face and chest.
Night sweats — hot flushes during sleep, frequently disrupting sleep and leaving bedding soaked.
Palpitations — a racing or thumping heartbeat, sometimes alongside a flush.

Sleep and mood

Insomnia — difficulty falling or staying asleep, often driven by night sweats but also independent of them.
Low mood and anxiety — new or worsened, sometimes the first symptom noticed.
Irritability and reduced stress tolerance.
Brain fog — word-finding difficulty, poor concentration, memory slips.

Body changes

Joint and muscle aches — often overlooked as a menopause symptom, but common.
Weight and body-composition changes — a tendency to store fat more centrally.
Skin and hair changes — dryness, thinning.
Headaches — including new or worsening migraine in some women.

The urogenital cluster

These symptoms tend to start later and, unlike hot flushes, usually do not resolve on their own:

Vaginal dryness and discomfort
Bladder symptoms — urgency, frequency, waking to urinate
Reduced libido and sexual discomfort

What can mimic perimenopause

Many of these symptoms have other causes, which is why assessment matters:

Thyroid disease — hot flushes, mood change and palpitations overlap almost exactly.
Depression and anxiety disorders — independent of hormones.
Sleep apnoea — fatigue, poor sleep and mood change.
Anaemia and iron deficiency — fatigue, palpitations, low mood.
Medication effects.

When to seek help

See a clinician if symptoms are affecting your life, if bleeding is heavy or irregular in a concerning way, or if mood symptoms are severe. Bleeding after menopause — any bleeding a year or more after your final period — always needs medical assessment.

Do not assume every symptom is "just menopause". Overlapping conditions are common and treatable. A clinician can distinguish what is hormonal from what is not, and treat each appropriately.

Educational information only — not medical advice. Symptoms vary widely between women. Consult a qualified clinician for your circumstances.

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