Perimenopause
The years before your last period: what is changing, how long it lasts, and what the evidence says actually helps.
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What it is & timeline
- What Is Perimenopause? Symptoms, Timing, and DiagnosisPerimenopause is the menopause transition: periods may become less predictable, and symptoms such as hot flashes, night sweats, sleep disruption, mood change, vaginal dryness, acne, or heavier bleeding can appear before the final period. The Stages of Reproductive Aging Workshop +10 (STRAW+10) framework stages the transition around menstrual-cycle changes and the final menstrual period, while American College of Obstetricians and Gynecologists guidance says hormone testing is usually unnecessary when age, symptoms, and period changes fit perimenopause. [1] [2] Menopause is confirmed only after 12 months without a period, unless hormonal contraception, surgery, pregnancy, or another medical cause obscures the pattern.
- Perimenopause vs Menopause: How to Tell the DifferencePerimenopause is the transition when cycle timing changes and symptoms such as hot flashes or night sweats may start. Menopause is confirmed after 12 months without a period when pregnancy, hormonal contraception, surgery, or another medical cause does not explain the bleeding pattern. The Stages of Reproductive Aging Workshop +10 (STRAW+10) framework stages the transition around menstrual-cycle changes and the final menstrual period, and American College of Obstetricians and Gynecologists guidance says hormone testing usually is not needed when age, symptoms, and period changes fit perimenopause. [1] [2]
Symptoms
Common questions
Is perimenopause the same as being postmenopausal?
No. Perimenopause is the transition before the final menstrual period. Menopause is reached after 12 months without a period when another cause does not explain the bleeding pattern.
How is perimenopause different from menopause?
No. Perimenopause is the transition. Menopause is the point reached after 12 months without a period, when the period pattern is not explained by another cause.
Can perimenopause symptoms come and go?
Yes. The Stages of Reproductive Aging Workshop +10 (STRAW+10) framework stages the transition around menstrual-cycle changes, and symptoms can vary by week or cycle. A calmer month does not establish the transition is over, and a harder month does not mean every symptom has one cause.
How long does perimenopause usually last?
It often lasts years. The Office on Women's Health describes perimenopause as lasting 2 to 8 years before periods stop, with about 4 years being typical. Study of Women's Health Across the Nation calendar data found adjusted median transition duration from 4.37 to 8.57 years depending on age at onset.