{"id":102,"date":"2026-09-03T01:54:29","date_gmt":"2026-09-03T05:54:29","guid":{"rendered":"https:\/\/pauseproof.com\/articles\/perimenopause-symptoms-come-and-go\/"},"modified":"2026-09-22T02:08:47","modified_gmt":"2026-09-22T06:08:47","slug":"perimenopause-symptoms-come-and-go","status":"publish","type":"post","link":"https:\/\/pauseproof.com\/articles\/perimenopause-symptoms-come-and-go\/","title":{"rendered":"Why Perimenopause Symptoms Come and Go, Then Come Back"},"content":{"rendered":"\n

Perimenopause symptoms come and go because the ovarian hormone pattern in these years is erratic rather than steadily falling. Measured cycle by cycle, oestradiol in the transition can run higher than in younger women, and some cycles ovulate while others do not. A quiet three weeks is not evidence that the transition stopped.<\/strong><\/p>\n\n\n\n

Why do perimenopause symptoms come and go instead of building steadily?<\/h2>\n\n\n\n

The mental picture most people carry is a slope. Hormones fall a little each year, symptoms rise a little each year, and the line only goes one way. Almost nothing in the cycle by cycle measurements looks like that.<\/p>\n\n\n\n

When researchers sampled blood three times a week across a single menstrual cycle in 76 women grouped by reproductive stage, oestradiol in ovulatory cycles was higher<\/em> in the later transition stages, not lower, alongside higher FSH and LH and lower luteal phase progesterone (Hale and colleagues, Journal of Clinical Endocrinology and Metabolism, 2007). Anovulatory cycles clustered in the late transition group, which had nine of them, against zero in the late reproductive group. The same women were producing cycles that did not resemble each other.<\/p>\n\n\n\n

That is the shape that produces a run of ordinary weeks. If one month recruits a follicle in something like the usual way and the next month does not, the two months have no reason to feel the same.<\/p>\n\n\n\n

Do the hormones really swing, or is that just something people say?<\/h2>\n\n\n\n

The most concrete evidence sits in a follow up study from the same group. Blood taken three times a week from 77 women aged 21 to 55 found that 11 of 29 ovulatory cycles in the early and late transition, which is 37 percent, showed a second rise in oestradiol during the mid and late luteal phase. The authors named this a luteal out of phase event (Hale and colleagues, Menopause, 2009). Those cycles also carried lower luteal progesterone and higher early cycle FSH, and tended to be either shorter than 21 days or longer than 40.<\/p>\n\n\n\n

Both studies are small and each covers roughly one cycle per woman, so they describe the range of patterns that exist rather than how often any one woman meets them. What they rule out is the idea that the transition is a single smooth downward line.<\/p>\n\n\n\n

What people are usually told<\/th>What the measurements show<\/th>Source<\/th><\/tr><\/thead>
Hormones fall steadily through your forties<\/td>Ovulatory cycle oestradiol, FSH and LH all rose as women moved through the transition stages, while luteal progesterone fell<\/td>Hale and colleagues, JCEM 2007, 76 women, blood three times weekly<\/td><\/tr>
Everyone follows the same curve<\/td>Four separate oestradiol trajectories, including a flat group of 28.6 percent with no clear decline shape<\/td>Tepper and colleagues, JCEM 2012, SWAN, up to 11 annual visits<\/td><\/tr>
A cycle either works or it does not<\/td>37 percent of early and late transition ovulatory cycles showed a second luteal oestradiol rise<\/td>Hale and colleagues, Menopause 2009, 77 women aged 21 to 55<\/td><\/tr>
A normal blood test rules perimenopause out<\/td>Identification at 45 and over is made without laboratory tests; serum FSH may be considered between 40 and 45<\/td>NICE guideline NG23, updated 7 November 2024<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\"Woman
In one study, 37 percent of ovulatory cycles in the transition carried a second oestradiol rise.<\/figcaption><\/figure>\n\n\n\n

Does everyone move through it the same way?<\/h2>\n\n\n\n

No, and the largest dataset on this is blunt about it. The Study of Women’s Health Across the Nation followed women aged 42 to 52 through up to 11 annual visits and sorted their oestradiol into four trajectory groups: rise then steep decline in 31.5 percent, flat in 28.6 percent, slow decline in 26.9 percent, and rise then slow decline in 13.1 percent (Tepper and colleagues, Journal of Clinical Endocrinology and Metabolism, 2012). FSH split into three rising patterns. Close to three women in ten had no clear oestradiol decline shape at all.<\/p>\n\n\n\n

One limit matters for this question. Those were annual measurements. They describe the shape of several years and say nothing about what happens between one week and the next.<\/p>\n\n\n\n

Does a good stretch mean it was never perimenopause?<\/h2>\n\n\n\n

Neither of the two frameworks clinicians work from treats symptom free weeks as evidence against. STRAW+10, the research staging system, stages by bleeding pattern: entry to the early transition is a persistent difference of seven days or more between consecutive cycle lengths, and the late transition is marked by a gap of 60 days or more without bleeding. Symptoms are not part of the entry criteria, and STRAW+10 places vasomotor symptoms one stage later. Longitudinal cohort data disagree with its own chart on that point, which is worth knowing before anyone quotes the staging table at you. When a wandering cycle turns into a persistent pattern of bleeding between periods or irregular bleeding, UK guidance has specific rules on which bleeding patterns are investigated before any treatment<\/a>.<\/p>\n\n\n\n

UK clinical guidance takes a different route. NICE NG23 identifies perimenopause in otherwise healthy people aged 45 and over on recently started vasomotor symptoms plus any change in the menstrual cycle. Neither framework asks whether the symptoms showed up every week. If your cycles have not changed yet, that on its own does not settle anything either, which is covered in why regular periods do not rule perimenopause out<\/a>, and the opposite pattern is in what a missed period in your forties means<\/a>.<\/p>\n\n\n\n

STRAW+10 also states plainly that its bleeding criteria cannot stage women after hysterectomy or endometrial ablation, or women with polycystic ovary syndrome, primary ovarian insufficiency or ongoing tamoxifen use. For those readers the cycle arithmetic in this article does not apply.<\/p>\n\n\n\n

\"Woman
The staging research was built on prospective diaries, which is why recorded dates carry weight.<\/figcaption><\/figure>\n\n\n\n

Can a blood test taken during a good week settle it?<\/h2>\n\n\n\n

This depends on your age, and the guidance splits at 45. NICE recommendation 1.3.1 identifies perimenopause without laboratory tests in otherwise healthy people aged 45 and over. Recommendation 1.3.6 says to consider serum FSH in people aged 40 to 45 with symptoms including a change in the menstrual cycle. So for a 42 year old, a test is consistent with the guideline rather than a mistake, and it is not this article’s place to tell anyone to seek one or turn one down.<\/p>\n\n\n\n

What the fluctuation research adds is narrower. A single draw captures one day inside a system that has been measured varying between cycles, so a reading inside the reference range answers a smaller question than most people are asking of it. That is unpacked in what a normal hormone test can and cannot tell you<\/a>.<\/p>\n\n\n\n

How long does the on and off pattern carry on?<\/h2>\n\n\n\n

The sources genuinely disagree, and it is worth saying so rather than picking one. SWAN reported a median total duration of frequent vasomotor symptoms of 7.4 years, with a median 4.5 years persisting after the final period, and found the longest duration, a median above 11.8 years, in women who were premenopausal or early perimenopausal when frequent symptoms began (Avis and colleagues, JAMA Internal Medicine, 2015). A review in the Journal of Women’s Health in 2016 instead describes most women’s experience of hot flushes as limited to a year or two, with others running a decade or more and a small proportion never free of them (Santoro, 2016). The reason these figures never line up is that each one counts a different thing, which we unpick in how long perimenopause lasts<\/a>. That 4.5 year persistence figure takes on a different meaning once the periods have stopped for good, which is where what continues after the final period<\/a> picks the thread up.<\/p>\n\n\n\n

Those two do not sit comfortably together. Both come from serious sources. The honest reading is that the spread is very wide and any single number you are quoted depends on which cohort was studied and how frequent symptoms were defined.<\/p>\n\n\n\n

What is worth writing down while symptoms come and go?<\/h2>\n\n\n\n

Prospective menstrual diaries are the form of evidence the staging research was actually built on, so first day of bleeding dates, kept as they happen, carry more information than a recalled impression. Consecutive cycle lengths are what STRAW+10 compares, not how your cycle differs from your own long term average. A rough note of which weeks were bad costs nothing and turns a vague account into a pattern someone can look at.<\/p>\n\n\n\n

It is also worth knowing which symptoms tend to go unrecognised. In a survey of 17,494 Flo app users across 158 countries, hot flushes were named as a sign of perimenopause by 71.1 percent of the 17,290 respondents of all ages who answered that question, but reported by 50.0 percent of the 12,681 respondents aged 35 and over who were asked what they were experiencing. Fatigue ran the other way at 83.2 percent (Hedges and colleagues, Menopause, 2026). Those are two different questions put to two overlapping but different groups, and the study did not statistically test the gap. A racing or skipping heart is another of the symptoms women rarely connect to the transition, and the published evidence on perimenopause heart palpitations<\/a> is narrower than the reassurance usually offered. More on the symptom people expect least in perimenopause fatigue<\/a>. Breast tenderness sits in the same blind spot: it is named as a hormonal symptom on one NHS page and missing from the menopause symptom list on another, which is why sore breasts in perimenopause<\/a> so rarely get connected to the transition.<\/p>\n\n\n\n

Where does the evidence stop?<\/h2>\n\n\n\n

No published study maps your particular good weeks and bad weeks onto your own hormone readings. The nearest work links greater oestradiol variability across months to more depressive symptoms (Gordon and colleagues, Menopause, 2016), and the same group later published a paper on the role of oestradiol fluctuation in perimenopausal depression that its own title calls a hypothesis paper. That is what a hypothesis paper means: proposed, not settled, and specific to mood rather than to symptoms in general.<\/p>\n\n\n\n

So the defensible statement is the narrow one. The hormonal environment of these years has been measured as erratic rather than steadily declining, and staging systems do not require symptoms to be continuous. Anyone who tells you precisely which hormone did what during your quiet fortnight has gone past what has been shown.<\/p>\n\n\n\n

Frequently asked questions<\/h2>\n\n\n
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Is it normal for perimenopause symptoms to disappear for weeks and then return?<\/h3>\n
\n\n

Nothing in the two frameworks clinicians use treats symptom free stretches as unusual or as evidence against perimenopause. STRAW+10 stages the transition by bleeding pattern rather than by symptoms, and NICE NG23 asks about recently started vasomotor symptoms and a change in the cycle, not about whether they occurred every week.<\/p>\n\n<\/div>\n<\/div>\n

\n

Does feeling fine mean my hormones went back to normal?<\/h3>\n
\n\n

It cannot be read that way, because nobody has measured your hormones on the good days. What has been measured is that hormone levels in the transition vary between cycles, and that ovulatory cycle oestradiol in the later transition stages was higher rather than lower in one study of 76 women sampled three times a week.<\/p>\n\n<\/div>\n<\/div>\n

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Do hormone levels really go up as well as down in perimenopause?<\/h3>\n
\n\n

In the measured samples, yes. Hale and colleagues found ovulatory cycle oestradiol, FSH and LH all rising with progression through the transition stages, and in a later study 37 percent of early and late transition ovulatory cycles showed a second oestradiol rise in the luteal phase. Both studies were small.<\/p>\n\n<\/div>\n<\/div>\n

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Can perimenopause symptoms come back worse after a good stretch?<\/h3>\n
\n\n

The published data do not track individual women week by week, so there is no study that answers this directly. What is documented is that the pattern across years is not uniform: SWAN sorted oestradiol into four different trajectory shapes and 28.6 percent of women fell into a flat group with no clear decline.<\/p>\n\n<\/div>\n<\/div>\n

\n

Will a blood test taken during a good week look normal?<\/h3>\n
\n\n

It may, and that is one reason NICE identifies perimenopause without laboratory tests in otherwise healthy people aged 45 and over. Between 40 and 45 the same guideline says serum FSH may be considered. Any decision about testing belongs with your own clinician rather than with an article.<\/p>\n\n<\/div>\n<\/div>\n

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How do I tell this apart from something else that comes and goes?<\/h3>\n
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You cannot do that from a symptom list, and this article is not a way to do it. Thyroid problems, iron status after heavy bleeding, sleep disorders and mood conditions all overlap with perimenopause and all fluctuate. Separating them is a clinical assessment, and a written record of dates and symptoms is what makes that assessment easier.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n

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This article is general information, not medical advice, and is not a substitute for care from a qualified healthcare professional. Speak to your doctor about your own situation.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Feeling fine for three weeks and then not is the pattern, not the exception. What the measured hormone data show, and where the evidence runs out.<\/p>\n","protected":false},"author":1,"featured_media":99,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","rank_math_title":"Why Perimenopause Symptoms Come and Go: The Evidence","rank_math_description":"Perimenopause symptoms come and go because hormone patterns in these years are erratic, not steadily falling. What the cycle by cycle data actually show.","rank_math_focus_keyword":"perimenopause symptoms come and go","rank_math_canonical_url":"","rank_math_breadcrumb_title":"","rank_math_facebook_title":"","rank_math_facebook_description":"","rank_math_facebook_image":"","rank_math_twitter_title":"","rank_math_twitter_description":"","rank_math_twitter_image":"","rank_math_pillar_content":"","rank_math_robots":[],"rank_math_advanced_robots":[]},"categories":[5],"tags":[],"class_list":["post-102","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-understanding-the-change"],"_links":{"self":[{"href":"https:\/\/pauseproof.com\/articles\/wp-json\/wp\/v2\/posts\/102","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pauseproof.com\/articles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pauseproof.com\/articles\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pauseproof.com\/articles\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pauseproof.com\/articles\/wp-json\/wp\/v2\/comments?post=102"}],"version-history":[{"count":6,"href":"https:\/\/pauseproof.com\/articles\/wp-json\/wp\/v2\/posts\/102\/revisions"}],"predecessor-version":[{"id":243,"href":"https:\/\/pauseproof.com\/articles\/wp-json\/wp\/v2\/posts\/102\/revisions\/243"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pauseproof.com\/articles\/wp-json\/wp\/v2\/media\/99"}],"wp:attachment":[{"href":"https:\/\/pauseproof.com\/articles\/wp-json\/wp\/v2\/media?parent=102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pauseproof.com\/articles\/wp-json\/wp\/v2\/categories?post=102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pauseproof.com\/articles\/wp-json\/wp\/v2\/tags?post=102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}