The terms 'perimenopause' and 'menopause' are often used interchangeably — but they mean very different things. Understanding the distinction is the first step to getting the right support at the right time.
The Simple Definitions
Think of it as a journey with three distinct stages:
- Perimenopause — the transition phase. Hormones are fluctuating, periods are changing, symptoms are appearing. You are still having periods (however irregular). This stage typically lasts 4–10 years.
- Menopause — a single moment in time. The day that marks exactly 12 consecutive months without a menstrual period. The average age in Australia is 51–52.
- Post-menopause — everything after that 12-month mark. Hormone levels have stabilised at a lower level. Many symptoms ease, though some continue.
💡 💡 Key insight: You can only confirm you have reached menopause in retrospect — after 12 months without a period. While you are going through the transition, you are in perimenopause.
Why the Distinction Matters
The distinction matters for several practical reasons. First, you can still get pregnant during perimenopause — contraception is still needed. Second, the treatment approach may differ depending on your stage. Third, understanding that you are in perimenopause (not 'just stressed') can be enormously validating and help you access the right support.
How Do You Know Which Stage You Are In?
During perimenopause, you are still having periods — even if they are irregular. Once you have gone 12 months without any period, you have reached menopause. From that point, you are post-menopausal.
Blood tests (FSH and oestradiol) can provide additional information but are not always reliable during perimenopause because hormone levels fluctuate so much. Your symptoms and menstrual history are often more informative.
Which Stage Has the Worst Symptoms?
Contrary to what many women expect, perimenopause — not menopause — is often when symptoms are most intense. The erratic hormonal fluctuations of perimenopause are more disruptive than the lower but stable hormone levels of post-menopause. Many women find that symptoms actually improve after menopause is reached.
Getting a Diagnosis
In Australia, perimenopause is primarily a clinical diagnosis based on your age, symptoms, and menstrual history. Your GP can confirm this and discuss treatment options. From July 2025, a Medicare rebate is available for a dedicated menopause health assessment.