Perimenopause is the transition phase before menopause when hormones fluctuate and symptoms often begin. It can last several years and is commonly marked by irregular periods.
Menopause is a single point in time, defined as 12 months in a row without a menstrual period, not caused by pregnancy, birth control, or another medical condition. After that point, you are in postmenopause.
Timeline: when each stage typically happens
Many women start noticing perimenopause symptoms in their 40s, though it can begin earlier. The average age of menopause is 51.5.
If periods stop before age 40, it may be premature ovarian insufficiency (POI), which deserves prompt evaluation because the health considerations and treatment approach can differ.
Symptoms: what changes in perimenopause vs menopause
Perimenopause symptoms (often driven by hormone swings)
Perimenopause tends to be more unpredictable because estrogen and progesterone can rise and fall unevenly.
- Irregular periods, shorter or longer cycles, heavier or lighter bleeding
- Hot flashes and night sweats
- Sleep problems and frequent waking
- Mood changes, anxiety, irritability
- Brain fog and trouble concentrating
- Breast tenderness, headaches, changes in libido
Menopause and postmenopause symptoms (often linked to lower estrogen)
After menopause, hormones are typically lower and steadier. Some symptoms improve, while others can become more noticeable.
- Vasomotor symptoms, hot flashes and night sweats may continue
- Vaginal dryness, burning, painful sex
- Urinary urgency, recurrent UTIs
- Body composition changes, weight gain, joint aches
- Long-term health concerns like bone loss and cardiovascular risk
Midlife Wellness supports women across these symptom areas, including mood and sleep, sexual health, and weight and metabolic health.
Diagnosis: what The Menopause Society recommends about testing
One of the most searched questions is, “Do I need hormone tests to know I’m in perimenopause?” The Menopause Society’s guidance is that for most women in the typical age range, perimenopause and menopause are clinical diagnoses based on your symptoms and menstrual pattern. Routine blood testing is often not necessary because hormone levels can fluctuate widely day to day in perimenopause.
Testing may be considered when the picture is unclear, periods stop very early, you have had a hysterectomy, or symptoms suggest another condition. A clinician may also evaluate for thyroid disease, anemia, or other causes of similar symptoms.
Treatment: what’s evidence-based for each stage
Perimenopause treatment options
The Menopause Society recognizes that treatment should match your symptoms, medical history, and goals.
- Hormone therapy (HT) can be very effective for hot flashes and night sweats when appropriate.
- If you still have a uterus, progestogen is needed with systemic estrogen to protect the uterine lining.
- Non-hormonal options can help if hormones are not a fit, including FDA-approved therapies for vasomotor symptoms and targeted medications for sleep or mood.
- Birth control may be used for cycle control and contraception in perimenopause, depending on your situation.
Menopause and postmenopause treatment options
- Systemic hormone therapy remains the most effective treatment for moderate to severe hot flashes.
- Local vaginal estrogen and other targeted therapies are recommended options for vaginal dryness and urinary symptoms, and are often safe for long-term use in many patients.
- Bone health support, including lifestyle and medical options when indicated, becomes more important after menopause.
Key point: The Menopause Society supports individualized care and shared decision-making, especially for hormone therapy, with attention to timing, benefits, risks, and personal health history.
When to seek help
Schedule a menopause specialist visit if symptoms affect your sleep, work, mood, sex life, or relationships, or if you have heavy bleeding, bleeding after sex, or bleeding after menopause.
If you are unsure whether you are in perimenopause or menopause, a virtual visit with Midlife Wellness can help clarify what stage you are in and build a plan that fits your body and your life.