Perimenopause Hot Flushes
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Perimenopause Hot Flushes: Why They Happen & What Actually Helps
Written by the PAUSE+ team
One minute you're fine. The next you're a human radiator — red-faced, drenched, fanning yourself with a menu in a restaurant like that's a normal thing to do. Hot flushes are the symptom everyone's heard of, and when they hit, they're relentless. Here's why they happen and what genuinely helps.
Are hot flushes a symptom of perimenopause?
Yes — hot flushes are one of the most well-known perimenopause symptoms. Around three in four women experience hot flushes or night sweats during the menopause transition. They're known medically as vasomotor symptoms, and they can start in perimenopause, years before your periods stop.
Why does perimenopause cause hot flushes?
Falling and fluctuating oestrogen affects your hypothalamus — the part of your brain that acts as your internal thermostat. As hormone levels swing, that thermostat becomes overly sensitive and misreads your body as too hot. It responds by trying to cool you down fast: blood vessels near the skin dilate (the flushing and heat), you sweat, and your heart may race. A few minutes later it passes, often leaving you cold and clammy.
What does a hot flush feel like?
Our girls describe a sudden wave of heat rising through the chest, neck and face; skin going red and blotchy; sweating that soaks through clothes; a racing or pounding heart; and sometimes a wave of anxiety or dizziness with it. At night they become night sweats — waking up drenched, changing the sheets, sleeping on a towel. Some women get a couple a week; others get them many times a day.
When to see your GP
See your GP if flushes are frequent, drenching or wrecking your sleep and daily life, or if they come with chest pain, a very fast or irregular heartbeat, or feeling faint. Flushing can occasionally have other causes (thyroid problems, certain medications, and rarely other conditions), so it's worth getting assessed rather than assuming. Supplements are food, not medicine, and don't replace medical care.
How long do perimenopause hot flushes last?
Each flush usually lasts a few minutes. As a symptom, though, vasomotor symptoms can persist for around seven years on average, and longer for some women. They often peak around the time of your final period and ease afterwards — but “afterwards” can be a long way off, which is why manageable, sustainable support matters.
What helps with perimenopause hot flushes?
- Cooling tactics: layers you can strip off, a bedroom fan, cotton bedding, cold water to hand, and noticing your triggers (common ones are alcohol, caffeine, spicy food and stress).
- Lifestyle: regular exercise, not smoking, managing stress and keeping a healthy weight are all associated with fewer or milder flushes.
- HRT: hormone replacement therapy is the most effective evidence-based treatment for hot flushes and night sweats and is recommended in UK guidance for many women. It's a personal decision to make with your GP — and for many women it's transformative.
- Targeted supplement support: botanicals traditionally used for the temperature cluster — such as sage — can be part of your toolkit. They work gradually, not instantly.
Where PAUSE+ fits: PAUSE+ COOL is built for the hot-flush, night-sweat and itching cluster, with named, dosed botanicals including clinically studied sage leaf and red clover — every dose printed on the label.
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Frequently asked questions
What triggers hot flushes in perimenopause?
Common triggers include alcohol, caffeine, spicy food, stress, hot environments and warm bedding. Fluctuating oestrogen is the underlying cause; these just tip an already-sensitive thermostat over the edge.
Can you get hot flushes before your periods stop?
Yes. Hot flushes commonly begin in perimenopause, while you're still having periods, sometimes years before menopause.
How do I stop night sweats?
Keep the bedroom cool, use breathable cotton bedding and nightwear, limit alcohol and caffeine in the evening, and speak to your GP about treatment options including HRT if they're disrupting your sleep.
Do supplements help hot flushes?
Some botanicals are traditionally used for the temperature cluster and can be part of a wider toolkit alongside lifestyle changes and, if appropriate, medical treatment. They aren't a substitute for HRT or medical care.
Related symptoms
Sources: NHS and British Menopause Society guidance on vasomotor symptoms and HRT; long-term studies on the duration of vasomotor symptoms. For general information only; not a substitute for personal medical advice.