Perimenopause: Early Symptoms Many Women Don’t Recognise
Many women associate menopause with hot flushes and the end of their periods.
But long before menopause occurs, the body enters a transitional phase called perimenopause.
For many women, this stage begins in their late 30s or early 40s, and the early signs can be subtle, confusing, and often misunderstood.
Understanding the early symptoms of perimenopause can help women recognise what is happening in their bodies and seek the right support.
What Is Perimenopause?
Perimenopause is the phase leading up to menopause when hormone levels - particularly oestrogen and progesterone - begin to fluctuate.
Unlike menopause, which is defined as 12 months without a menstrual period, perimenopause can last several years.
During this time, hormonal fluctuations can affect many different systems in the body, including sleep, mood, cognition, and metabolism.
Because these changes often appear gradually, many women do not immediately recognise them as hormonal.
Early Symptoms of Perimenopause
Perimenopause does not always begin with the symptoms people commonly expect.
Many women first notice more subtle changes such as:
Brain fog
Difficulty concentrating, forgetting words mid-sentence, or feeling mentally fatigued.
Sleep disruption
Waking during the night, particularly around 2–4am, or finding it harder to stay asleep.
Increased anxiety or irritability
Feeling less resilient to stress or experiencing mood changes that feel new or unfamiliar.
Reduced stress tolerance
Situations that previously felt manageable may suddenly feel overwhelming.
Changes in menstrual cycles
Periods may become slightly shorter, heavier, lighter, or less predictable.
These changes can appear gradually and may not occur all at once.
Why Perimenopause Can Be Confusing
Many of the early symptoms of perimenopause overlap with other life factors.
Women in their late 30s and 40s are often balancing careers, family responsibilities, and significant life demands.
Because of this, symptoms such as fatigue, anxiety, or poor sleep are often attributed to stress rather than hormonal changes.
In addition, hormone levels can fluctuate significantly during perimenopause, which means blood tests may appear normal even when symptoms are present.
This is why perimenopause is often diagnosed based on symptoms, menstrual history, and clinical context, rather than a single laboratory result.
When to Speak With a GP
If you are noticing persistent changes in sleep, mood, cognition, or your menstrual cycle, it may be helpful to discuss these symptoms with a GP who has a special interest in women’s health.
A structured conversation can help explore:
- Whether symptoms may be related to perimenopause
- Other possible medical explanations
- Lifestyle factors that may be contributing
- Evidence-based options for managing symptoms
For many women, simply understanding what is happening in their bodies can bring a sense of clarity and relief.
A Whole-Person Approach to Midlife Health
Perimenopause affects each woman differently.
Management may include a combination of:
- Lifestyle and sleep support
- Mental health and stress management strategies
- Hormonal or non-hormonal treatment options where appropriate
- Ongoing monitoring and personalised care
The goal is not simply to “push through” symptoms, but to support women in maintaining energy, wellbeing, and quality of life during midlife.
When Understanding Leads to the Right Support
Perimenopause is a natural stage of life, but that does not mean women need to struggle through its symptoms alone.
Recognising the early signs can make it easier to seek appropriate guidance and explore the options available.
If you’re experiencing changes that may be related to perimenopause, it may be worth discussing them with a GP who has a special interest in women’s health.
Book a consultation with Dr Kafayat Lee at Arami Women’s Health.