Perimenopause — the transition leading up to your final menstrual period — can bring a surprising range of changes. Many women aren’t sure what’s happening or how long it will last. Here are answers to the five questions women most commonly ask.

Q1.  What are the symptoms of perimenopause?

Perimenopause can feel different for every woman, but the most well-known symptoms are hot flashes, night sweats, and changes in your menstrual cycle — periods that become irregular, heavier, lighter, or further apart.

But the symptom list is actually much longer. Many women also experience fatigue, sleep problems, mood changes (anxiety, irritability, or low mood), brain fog, poor memory, vaginal dryness, and changes in sexual desire or comfort.

Here’s something that surprises many women: while hot flashes get all the attention, surveys show that fatigue, physical and mental exhaustion, and irritability are actually the symptoms women most commonly report. If you’ve been feeling “off” and can’t quite explain it, perimenopause may be worth discussing with your doctor.

Q2.  When does perimenopause start, and how long does it last?

Perimenopause typically begins in the mid-to-late 40s. By age 45, about 4 in 10 women have already started the transition — though some women begin earlier or later.

Think of perimenopause like a long runway before a plane lands: the destination (menopause) is defined as 12 full months without a period, but the journey there can take years. For some women, the transition lasts just a couple of years; for others, it can stretch over a decade.

Hot flashes and night sweats tend to be most intense during the first 4–7 years, but about half of women still experience them more than 10 years after their last period. So if you’re still having symptoms years later, that’s actually quite common.

Q3.  How do I know if I’m in perimenopause — and not something else?

The most telling sign is a change in your menstrual cycle — specifically, cycles that vary by 7 or more days in length from one month to the next (for example, a 28-day cycle followed by a 35-day cycle). Combine that with hot flashes or night sweats, and it’s a strong signal that perimenopause has begun.

The tricky part is that many perimenopause symptoms — fatigue, anxiety, brain fog, headaches, sleep trouble — also show up with other conditions like thyroid problems, depression, or even just everyday stress. That’s why it’s important not to assume everything is “just menopause.”

The good news: women are often surprisingly accurate at recognizing when something has shifted in their bodies. Trust your instincts, and bring your observations to your doctor. A conversation about your cycle changes and symptoms — along with ruling out thyroid issues or other causes — is usually enough to get clarity.

Q4.  What treatments are available for perimenopausal symptoms?

You have more options than you might think — and the right approach depends on which symptoms bother you most and your personal health history.

•       Hormone therapy (HT): This is the most effective treatment for hot flashes, night sweats, and vaginal dryness. It has a favorable benefit-to-risk profile for women under 60 or within 10 years of their last period. It’s not right for everyone, but for many women it’s a very reasonable option.

•       Non-hormonal medications: If hormone therapy isn’t right for you, certain antidepressants (SSRIs/SNRIs), gabapentin, and a newer medication called fezolinetant can significantly reduce hot flashes.

•       Lifestyle approaches: A plant-forward diet, regular exercise, and mind-body practices like yoga or mindfulness can all help manage symptoms. These won’t eliminate hot flashes for everyone, but they support overall wellbeing during the transition.

•       Cognitive behavioral therapy (CBT) and hypnosis: These have shown real benefit for reducing the distress caused by hot flashes and improving sleep — worth considering if you prefer non-medication approaches.

Q5.  Is this perimenopause, or could something else be going on?

This is one of the most important questions to ask — and one your doctor will want to think through with you. Many perimenopause symptoms look a lot like symptoms of other conditions:

•       Fatigue, weight changes, and mood shifts can be signs of thyroid disease — which is common in women this age and very treatable.

•       Anxiety, irritability, and sleep problems can be symptoms of depression or an anxiety disorder — not just “hormones.”

•       Brain fog and poor memory can have many causes, from poor sleep to stress to medical conditions worth ruling out.

•       Irregular bleeding could be perimenopause — but it can also have other causes that your doctor should evaluate.

The clearest signal that perimenopause is the cause is when menstrual cycle irregularity and vasomotor symptoms (hot flashes/night sweats) appear together. But because symptoms overlap so much with other conditions, a good conversation with your doctor — and possibly some basic blood tests — is the best way to get a clear picture.

This information is based on current medical literature and clinical guidelines. It is intended for educational purposes and does not replace personalized medical advice from your healthcare provider.