Perimenopause vs menopause: what's the difference?

Perimenopause is the transition before your final period, with irregular cycles and swinging hormones, lasting about 4 years on average. Menopause is the point 12 months after your last period. After that you're postmenopausal. Perimenopause is when most symptoms start, and when you can still get pregnant.

Premenopause is the reproductive years before any change, with regular cycles. Perimenopause starts when cycle length begins to vary by 7 days or more, and hormones start swinging. You can have subtle changes, like slightly shorter cycles, in late premenopause before perimenopause begins.

No, though people often use them interchangeably. Premenopause is before the transition; perimenopause is the transition. Doctors use the STRAW+10 stages to be precise: late reproductive stage, then early and late menopausal transition. In practice, if your cycles are still regular and you have no symptoms, you are most likely premenopausal.

It means you still have regular periods and haven't started the menopause transition. In medical studies, premenopausal women are compared with perimenopausal and postmenopausal women to see how symptoms change across the stages. It does not mean you are about to reach menopause; the transition usually starts years later.

There's no fixed range. Premenopause lasts from your first period until the transition starts, which is usually in your 40s; the median age at onset of perimenopause was 47.5 in one large study. Fertility starts to decline from about 32, well before perimenopause.

For many women, perimenopause brings the most symptoms, because hormones swing most then. Symptom reports rise in perimenopause and fall after menopause in studies. Some problems, like vaginal dryness and bone loss, grow after menopause, so both stages need attention.

No. Perimenopause is the years of change; menopause is the moment 12 months after your final period. In everyday speech, menopause often means the whole process, which causes the confusion. The distinction matters for contraception, which you still need in perimenopause, and for the type of HRT you are offered.

Perimenopause is the transition with irregular periods. Menopause is the point 12 months after the last period. Postmenopause is the time after that, starting with about 5 to 8 years in which hormones settle, then the late postmenopause.

Look at your periods. If they are still coming, even irregularly, you are in perimenopause. If you have gone 12 months without a period and you are not on hormonal contraception, you have reached menopause. If you are on contraception that affects periods, symptoms and age are better guides, and a doctor can advise. Our 2-minute check helps you place yourself.

Many ease, but not all at once. Hot flashes continued for a median of 4.5 years after the final period in SWAN, and mood and palpitations tended to settle later in postmenopause. Vaginal dryness and urinary symptoms often continue or worsen without treatment. Treatment works at any stage.

Not as a medical diagnosis. People usually mean premenstrual syndrome (PMS), the mood swings, bloating, breast tenderness and tiredness in the weeks before a period, or early perimenopause symptoms. PMS can feel worse in perimenopause as hormones swing more. A symptom diary for at least 2 cycles helps tell the difference.