You know something is changing. But where exactly are you? Early perimenopause, late perimenopause, or already past it?
Doctors use a staging system to answer that. And it is simpler than it sounds.
The five stages
- Premenopause Regular cycles and no menopausal symptoms.
- Early perimenopause Your cycle length starts to vary by 7 days or more, and that keeps happening. Symptoms may begin. FSH is rising and estrogen is swinging (Harlow et al., 2012).
- Late perimenopause Gaps of 60 days or more between periods. Hot flashes, night sweats, and sleep problems often peak here.
- Menopause A single point: 12 months in a row with no period. The average age in the U.S. is about 51.
- Postmenopause Everything after. Hot flashes can continue for years, and the focus shifts to bone, heart, and metabolic health.
How long does it last?
Perimenopause lasts about 4 years on average, and up to 10 for some women. Hot flashes and night sweats can run longer than that. In one large study, the middle value was 7.4 years (Avis et al., 2015).
But nobody moves through the stages on a perfect schedule. Some women skip around, and some have few symptoms at all.
The first sign is usually your cycle
Before hot flashes, before brain fog, the first clue is often cycle length. Periods that come every 23 days instead of 28. Or one that shows up a week late.
And that is why tracking your cycles is so useful. It tells us more about your stage than a single hormone test.
Why knowing your stage matters
Your stage shapes what to watch for and what to prioritize. Early on, sleep, mood, and bleeding changes take center stage. Later, bone, heart, and metabolic health become the long game (Monteleone et al., 2018).
Free self-assessment
Not sure where you are?
Our Is It Perimenopause? assessment takes a few minutes and helps you see where your symptoms fit.
Take the assessmentWant help figuring out your stage?
Book your Start Visit online. Booking questions? Text (469) 653-3124.
Frequently asked questions
What are the stages of menopause?
Premenopause, early perimenopause, late perimenopause, menopause, and postmenopause. Menopause itself is a single point in time: 12 months with no period.
How long does perimenopause last?
About 4 years on average, and up to 10 years for some women. Hot flashes can continue longer.
What is the first sign of perimenopause?
A change in cycle length, such as periods coming a week earlier or later than usual, is often the first sign.
What age does perimenopause start?
Usually in the mid to late 40s, and sometimes in the late 30s.
Sources
- Harlow SD, Gass M, Hall JE, et al. Executive summary of the Stages of Reproductive Aging Workshop + 10. Journal of Clinical Endocrinology & Metabolism. 2012.
- Avis NE, Crawford SL, Greendale G, et al. Duration of menopausal vasomotor symptoms over the menopause transition. JAMA Internal Medicine. 2015.
- Monteleone P, Mascagni G, Giannini A, Genazzani AR, Simoncini T. Symptoms of menopause: global prevalence, physiology and implications. Nature Reviews Endocrinology. 2018.
- Patton E, Shaughnessy M, Roberson Jasper N, et al. VA/DoD Clinical Practice Guideline for Menopause. Department of Veterans Affairs. 2026.
This article is general health information, not medical advice, and does not create a patient relationship. Don't start or stop any medication or supplement without talking to your provider. If you are having a medical emergency, call 911.