Perimenopause Symptoms: Early Signs, What's Normal, and What Helps

Key takeaways

• Perimenopause is the transition before menopause. It usually begins in the mid-to-late 40s and lasts about four years on average, though for some women it is much shorter and for others it lasts up to 10 years.
• Changes in your menstrual cycle are often the first sign. Hot flashes, night sweats, sleep problems, mood changes, and vaginal or bladder symptoms are also common.
• No single blood test confirms perimenopause. A clinician usually makes the diagnosis from your age, cycle history, and symptoms.
• You can still get pregnant until you have gone 12 months in a row without a period.
• Some bleeding changes, such as very heavy periods or bleeding between periods, should always be checked.
• Both hormonal and nonhormonal treatments can help. The right choice depends on your symptoms, health history, and preferences.

What is perimenopause?

Perimenopause, also called the menopause transition, is the stretch of time before your final period when the ovaries gradually make less estrogen and progesterone. Menopause itself is a single point in time: it is reached once you have gone 12 months in a row without a period. In the United States, the average age of menopause is 52. [1]

Hormone levels do not fall in a smooth line during perimenopause. They rise and fall unpredictably, sometimes from month to month. [4] That is why symptoms can come and go, and why one cycle can feel completely normal while the next one does not.

When does perimenopause start?

Perimenopause usually starts in the mid-to-late 40s, although some women notice changes in their mid-to-late 30s. [1] Cleveland Clinic describes a range from the mid-30s to the mid-50s. [4]

Symptoms may also start earlier than many women expect. In a 2025 survey of more than 4,400 U.S. women who used a period-tracking app, over half of those aged 30 to 35 reported moderate or severe symptoms on a standard menopause rating scale. [6] The data were self-reported, and the survey could not show that hormones caused every symptom, but the findings suggest that midlife changes deserve attention before age 45.

How long does perimenopause last?

On average, about four years, but it can last up to 10. [1] It ends when you reach menopause. Some symptoms, especially hot flashes, can continue for years afterward.

Common perimenopause symptoms

Not everyone has every symptom, and severity varies widely. These are the changes reported most often. [2, 4]

Changes in your period

Irregular periods are usually the first sign. Cycles may get shorter or longer, flow may be heavier or lighter, and you may skip periods. According to Mayo Clinic, a persistent change of seven days or more in the length of your cycle suggests early perimenopause, and 60 days or more between periods suggests late perimenopause. [2]

Hot flashes and night sweats

Hot flashes are sudden waves of warmth, often across the face, neck, and chest, sometimes followed by sweating or chills. When they happen at night, they are called night sweats. The FDA estimates that hot flashes occur in about 80% of women going through menopause. [11]

They can also last longer than many people expect. In the Study of Women's Health Across the Nation (SWAN), women who had frequent hot flashes or night sweats had them for a median of 7.4 years. Women whose hot flashes began early in the transition, while their periods were still regular or only starting to change, tended to have them the longest. [5]

Sleep problems

Trouble falling or staying asleep is common. Night sweats are one cause, but sleep can be disrupted even without them. [2] Poor sleep can then make mood, energy, and concentration harder to manage.

Mood changes and anxiety

The American College of Obstetricians and Gynecologists (ACOG) notes that about 4 in 10 women have PMS-like mood symptoms during perimenopause, such as irritability or low mood, and that these may not follow the menstrual cycle. [7] Most studies agree that the risk of depression rises during the menopause transition, and some women also report anxiety. [7]

Guidelines from The Menopause Society and the National Network of Depression Centers describe perimenopause as a window of vulnerability for both depressive symptoms and major depression, including in women with no previous history of depression. [8] Mood changes during this time are real and treatable, not a personal failing.

Vaginal, bladder, and sexual changes

Lower estrogen can lead to vaginal dryness, discomfort or pain during sex, urinary urgency, and leaking urine. Some women notice changes in desire or arousal. [2, 4]

Changes you may not feel

Some changes happen quietly. Bone is lost faster than it is replaced as estrogen falls, which raises the risk of osteoporosis over time. LDL ("bad") cholesterol may rise and HDL ("good") cholesterol may fall, which can increase heart disease risk. [2] This is one reason midlife is a good time for a check-in with a clinician, even if your symptoms are mild.

Is it perimenopause or something else?

There is no single test that confirms perimenopause. Because hormone levels swing so much during this stage, a single blood test for hormones such as FSH is usually not reliable for diagnosis. [3, 4] Instead, clinicians generally look at your age, menstrual history, and symptoms. They may order tests, such as a thyroid test, to rule out other conditions that can cause similar changes. [3]

Thyroid problems, pregnancy, some medications, and other health conditions can cause irregular periods, fatigue, sleep problems, or mood changes. If your symptoms are new, severe, or not what you expected for your age, it is worth having them evaluated.

Bleeding changes to get checked

Irregular periods are expected in perimenopause, but some bleeding patterns can point to other problems. See a clinician if you: [2, 4]

• Soak through a pad or tampon every one to two hours
• Pass large clots, or have periods that last more than seven days or several days longer than usual
• Bleed or spot between periods, or after sex
• Have periods less than 21 days apart
• Have any bleeding after going 12 months without a period. This needs prompt attention.

You can still get pregnant during perimenopause

Fertility declines during perimenopause, but it does not stop. As long as you are still having periods, even irregular ones, pregnancy is possible. If you do not want to become pregnant, keep using birth control until you have gone 12 months without a period, and talk with a clinician about which method makes sense for you. [2, 4]

What helps with perimenopause symptoms

Treatment depends on which symptoms bother you most, your health history, and your preferences. Many women use a combination of approaches.

About the treatments mentioned in this article. The evidence for the prescription treatments described below comes from studies of FDA-approved products. Compounded hormone preparations are not FDA-approved, and the FDA does not review compounded drugs for safety, effectiveness, or quality before they are marketed. [14] Results seen with FDA-approved products cannot be assumed to apply to compounded versions. A clinician can explain the differences.

Everyday habits

A steady sleep schedule, limiting screens before bed, and avoiding caffeine later in the day can help with sleep. Regular exercise and stress-reducing practices can support mood. [7]

For hot flashes specifically, the evidence is more selective. The Menopause Society's 2023 review of nonhormonal options recommends cognitive behavioral therapy (CBT), clinical hypnosis, and weight loss for hot flashes. It does not recommend exercise, yoga, avoiding triggers, cooling techniques, or herbal supplements as treatments for hot flashes, because the evidence that they reduce hot flashes is not strong enough. [10] Exercise is still valuable for bone, heart, muscle, and mood. It just should not be your only plan if hot flashes are disrupting your life.

Hormone therapy

Systemic estrogen, taken as a pill, patch, gel, spray, or cream, is the most effective treatment for hot flashes and night sweats. If you still have a uterus, a progestogen is added to protect the uterine lining. [3] The Menopause Society's position statement concludes that for most healthy women under 60, or within 10 years of menopause, who have bothersome symptoms, the benefits generally outweigh the risks. [9]

Hormone therapy is not right for everyone. Risks, including blood clots, stroke, and breast cancer, depend on your age, time since menopause, personal and family history, the type and dose of hormone, and the route. [3, 9] Low-dose vaginal estrogen is a separate option that treats vaginal dryness, painful sex, and some bladder symptoms, and acts mainly on local tissue. [3]

Nonhormonal prescription options

For women who cannot or prefer not to use hormones, several nonhormonal medicines can reduce hot flashes: [3, 10]

• Certain antidepressants (SSRIs and SNRIs), which can also help when a mood disorder is present
• Gabapentin, which may be useful when sleep is also a problem
• Oxybutynin, a bladder medicine that can also reduce hot flashes
• Fezolinetant (Veozah), approved by the FDA in 2023 for moderate to severe hot flashes caused by menopause. [11] It carries a boxed warning about rare but serious liver injury and requires liver blood tests before and during treatment. [12]
• Elinzanetant (Lynkuet), approved by the FDA in October 2025 for moderate to severe hot flashes caused by menopause. [13]

Support for mood

For depression during perimenopause, antidepressants and talk therapy are the recommended first-line treatments. Estrogen may help mood in some perimenopausal women, especially those who also have hot flashes, but it is not FDA-approved to treat depression. [8] If you ever have thoughts of harming yourself, call or text 988 in the U.S. to reach the Suicide & Crisis Lifeline.

Questions to bring to your clinician

• Do my symptoms fit perimenopause, or should we check for anything else?
• Is my bleeding pattern normal for this stage?
• Which of my symptoms are most worth treating, and what are my options?
• Am I a good candidate for hormone therapy? If not, which nonhormonal options fit me?
• What birth control makes sense for me right now?
• Should I have my bone health or cholesterol checked?

The bottom line

Perimenopause can begin years before your last period, and it often starts with subtle changes in your cycle, sleep, or mood. It is a normal life stage, not an illness, but that does not mean you have to simply put up with symptoms that affect your daily life. Some changes, especially unusual bleeding, should be checked. Effective hormonal and nonhormonal treatments exist, and a clinician can help you weigh the options against your own history.

If perimenopause symptoms are affecting your day-to-day life, Stone's clinician-guided menopause care starts with a review of your symptoms, health history, and goals. You can also send our team a question or read more about women's health at Stone.

This article is for educational purposes only and is not medical advice. Talk with a licensed clinician about your symptoms and whether a treatment is appropriate for you.