34 Symptoms? A Clear Guide to Perimenopause Signs
Lists of “34 symptoms” go viral, but they can leave you more confused than before. Here are the common signs of perimenopause, grouped so they make sense — and the ones that need a doctor.

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Key takeaways
- Perimenopause is the transition before periods stop; it usually starts in the 40s and can last several years.
- Changing periods are often the first sign; hot flushes, sleep problems, mood changes and brain fog are common.
- Women over 45 with typical symptoms do not usually need a blood test to be diagnosed.
- Very heavy bleeding, bleeding between periods or after sex, and bleeding after menopause should always be checked.
Menopause is officially one day: 12 months after your last period. Perimenopause is the years leading up to it, when hormone levels — particularly oestrogen — rise and fall unpredictably. For most women it begins in their 40s and lasts around four to eight years, although it varies a great deal.34
Because hormones affect almost every system in the body, the list of possible symptoms is long. That does not mean you will have them all. Here they are, grouped.
Periods
Often the first sign. Periods may become closer together or further apart, heavier or lighter, or skip months.1
Temperature
- Hot flushes
- Night sweats
See what helps with hot flushes.
Sleep and energy
- Difficulty falling or staying asleep, often waking in the early hours
- Fatigue
Mood and mind
- Low mood, anxiety, irritability or mood swings
- Brain fog and difficulty concentrating
- Forgetting words1
Body
- Joint and muscle aches
- Headaches or changes in migraines
- Heart palpitations
- Weight gain, particularly around the middle
- Breast tenderness
Skin and hair
- Dry or itchy skin, new sensitivity or adult acne
- Thinning hair
Read how perimenopause changes your skin.
Intimate and urinary
- Vaginal dryness and discomfort during sex
- Lower sex drive
- Needing to urinate more often, or recurrent urinary infections1
If you are in your 40s and several of these sound familiar, perimenopause is a reasonable explanation — and a good reason to talk to a doctor.
Getting a diagnosis
Guidelines say women over 45 with typical symptoms can usually be diagnosed on symptoms alone, without blood tests, because hormone levels fluctuate so much in perimenopause.2 Tests may be helpful if you are under 45. Keeping a simple symptom diary for a few weeks makes your appointment much more useful. See how to prepare for a menopause appointment.
Do not assume everything is hormones
Some symptoms overlap with other conditions, such as thyroid problems, low iron, depression or diabetes. See a doctor promptly if you have:
- very heavy periods, bleeding between periods or after sex;
- any bleeding more than 12 months after your last period;
- chest pain, or palpitations with dizziness or breathlessness;
- low mood that is not lifting, or thoughts of self-harm.
Sources
- NHS. Menopause: symptoms. nhs.uk.
- NICE. Menopause: identification and management (NG23), updated 2024. nice.org.uk.
- Harlow SD, et al. Executive summary of the Stages of Reproductive Aging Workshop + 10. Menopause. 2012;19(4):387–395.
- The Menopause Society. Perimenopause. menopause.org.
