Learn the first signs of perimenopause, including changes to periods, sleep, mood and hormones. Discover what early symptoms may indicate the menopause transition.
5 mins reading time
Jump to
What Are the First Signs of Perimenopause?
Why the First Symptoms Appear
Common Early Signs of Perimenopause
What Is Usually the Very First Symptom?
When Should You Speak with a Healthcare Professional?
Could These Symptoms Be Something Else?
Key Takeaways
Frequently Asked Questions
First Signs of Perimenopause
Perimenopause is the natural transition leading up to menopause, and for many women the first signs can be subtle.
Changes to your menstrual cycle, sleep, mood, or energy levels may appear gradually and can sometimes be mistaken for everyday stress or ageing.
Understanding the common early signs can help you recognise what may be happening and know when to seek advice if needed.
What Are the First Signs of Perimenopause?
The first signs of perimenopause vary from woman to woman, but changes to menstrual cycles are often among the earliest. Some women also notice changes in sleep, mood, concentration, or hot flushes as hormone levels begin to fluctuate.
While these experiences are common, not every woman will experience the same symptoms or notice them at the same time.
Why the First Symptoms Appear
Hormonal fluctuations begin
During perimenopause, hormone levels such as oestrogen and progesterone begin to fluctuate more than they did during the reproductive years. These natural changes may contribute to a range of physical and emotional symptoms, although every woman's experience is unique.
Changes to ovulation and the menstrual cycle
Ovulation may become less predictable during perimenopause, which can lead to changes in the timing, length, and flow of your periods. These changes often develop gradually and may become more noticeable over time.
Common Early Signs of Perimenopause
Changes to your periods
One of the most common early signs of perimenopause is a change in your menstrual cycle. Periods may become shorter or longer, lighter or heavier, and the time between periods may become less regular.
Mood changes
Some women notice changes in mood during perimenopause, including increased irritability or emotional sensitivity. Hormonal fluctuations, together with everyday life factors, may all play a role.
Sleep disturbances
Difficulty falling asleep, waking during the night, or feeling less refreshed in the morning are common experiences during perimenopause. For some women, night sweats may also contribute to disrupted sleep.
Hot flushes and night sweats
Hot flushes and night sweats can begin during perimenopause, although not every woman experiences them. Their frequency and intensity vary, ranging from occasional episodes to more regular occurrences.
Brain fog and concentration issues
Some women experience occasional difficulty concentrating or feeling less mentally sharp during perimenopause. These changes are often described as "brain fog" and may come and go throughout the menopause transition.
Changes in energy levels
It's not uncommon to notice changes in energy during perimenopause. Factors such as disrupted sleep, hormonal fluctuations, and the demands of daily life may all influence how energetic you feel from day to day.
Changes in libido
Changes in hormone levels, sleep quality, stress, and overall wellbeing may influence libido during perimenopause. Every woman's experience is different, and changes may be temporary or continue throughout the transition.
What Is Usually the Very First Symptom?
For many women, the earliest sign of perimenopause is a change in their menstrual cycle. Periods may become less predictable, cycle lengths may shorten or lengthen, and menstrual flow may become lighter or heavier than usual. These changes often appear before other menopause-related symptoms become noticeable.
When Should You Speak with a Healthcare Professional?
It can be helpful to keep track of changes to your menstrual cycle and any symptoms you experience.
Speak with your GP or healthcare professional if you notice unusually heavy or prolonged bleeding, including bleeding between periods or after sex; if you are younger than 45 and your periods stop or become irregular; if symptoms are severe or affecting your quality of life; or if you are unsure whether your symptoms are related to perimenopause or another health condition.
Could These Symptoms Be Something Else?
Some symptoms commonly associated with perimenopause can also have other causes. Thyroid conditions, ongoing stress, sleep disorders, pregnancy and other hormonal changes may produce similar symptoms.
If you are uncertain about what you are experiencing, a healthcare professional can help assess your symptoms and discuss appropriate next steps.
Key Takeaways
The first signs of perimenopause often develop gradually, with changes to menstrual cycles commonly appearing before other symptoms.
Sleep disturbances, mood changes, hot flushes, changes in concentration, energy levels, and libido may also occur as hormone levels fluctuate.
Every woman's menopause journey is different. Understanding the early signs of perimenopause can help you feel more informed, recognise common changes, and know when it may be appropriate to seek advice from a healthcare professional.
Frequently Asked Questions
What is usually the first sign of perimenopause?
For many women, the first noticeable sign is a change in their menstrual cycle. Periods may become more or less frequent, while the length or flow of each cycle may also change.
Can perimenopause start suddenly?]
Perimenopause usually develops gradually, although some women notice changes more quickly than others. Symptoms can appear at different times and may vary in intensity throughout the transition.
Can I experience symptoms before age 40?
Yes. While perimenopause most commonly begins during a woman's 40s, some women may notice changes before age 40. If symptoms or changes to your periods occur earlier than expected before the age of 40, it is recommended to speak with your GP to check for other causes..
How do I know if my symptoms are perimenopause?
Changes to your menstrual cycle, together with symptoms such as hot flushes, sleep disturbances, mood changes, or changes in concentration, may suggest perimenopause. Because these symptoms can have other causes, a healthcare professional can help assess your individual situation.
Do all women experience the same early symptoms?
No. Perimenopause affects every woman differently. Some women experience only a few mild symptoms, while others notice a broader range of changes over time.
Should I see a doctor for early perimenopause symptoms?
Consider speaking with your GP or healthcare professional if your symptoms are affecting your daily life, if you experience unusual bleeding, or if you are unsure whether your symptoms are related to perimenopause or another health condition.