At a glance
| Question | Quick answer |
|---|---|
| What is it? | A sudden change in how the body regulates temperature |
| The hallmark sign | Heat through chest, neck and face arriving in seconds |
| Often mistaken for | Ageing, anxiety, an assumed thyroid problem |
| How it’s investigated | DUTCH hormone profile, thyroid profile testing |
What a hot flush actually is
A hot flush is a sudden change in how your body regulates temperature. Falling and fluctuating oestrogen narrows the range your brain treats as comfortable, so a small rise in core temperature triggers a full cooling response: blood vessels dilate, you flush, you sweat, then you feel cold as it passes. It is one of the earliest signs of perimenopause.
The hallmark sign is the speed. It arrives in seconds rather than building gradually, it is felt through the upper body and face, and it passes within a few minutes. Night-time versions wake you and soak the sheets.
Oestrogen is the usual driver, but an overactive thyroid and high cortisol can produce a very similar sensation, which is why the two are worth ruling in or out rather than assuming a life stage.
What it’s often mistaken for
“Just getting older”. flushes can start years before periods stop, in your early 40s or even late 30s, and being dismissed as age delays useful support.
Anxiety or a panic response. the racing heart and sweating overlap, but a flush starts with heat and passes on its own within minutes.
A thyroid problem assumed rather than tested. an overactive thyroid genuinely can cause heat intolerance and sweating, so it is worth testing instead of guessing either way.
How we’d help
The DUTCH hormone profile maps oestrogen, progesterone and your cortisol pattern across a day, and where the picture warrants it we add thyroid profile testing, interpreted by a naturopath alongside your symptoms and cycle history. In-clinic or Telehealth, Australia-wide.
Common signs and symptoms
One sign alone is rarely the whole story. It’s the cluster, and the pattern over time, that points to a treatable cause.
- Sudden upper-body heat — chest, neck and face, arriving in seconds.
- Flushing and sweating — visible redness, then sweat as your body cools itself.
- A chill afterwards — feeling cold or clammy once the flush passes.
- Night sweats — waking hot and damp, often more than once a night.
- Heart racing during the flush — a brief pounding or fluttering that settles with it.
- Cycle changes alongside — periods getting closer, further apart or heavier. See why a period runs late.
Please read first
See your GP for flushing with unexplained weight loss, a persistently racing heart, fever, or any bleeding after menopause. These need assessment to exclude other causes before treating flushes as hormonal.
Frequently asked questions
What causes hot flushes?
Most often fluctuating and falling oestrogen during perimenopause, which narrows the temperature range your brain treats as comfortable so it triggers cooling too readily. An overactive thyroid, high cortisol and some medications can produce a similar sensation.
How long do hot flushes last?
An individual flush usually passes within a few minutes. As a phase they vary widely between women, commonly continuing for a few years through the menopausal transition, and for some longer.
Can you get hot flushes before menopause?
Yes. Hot flushes are frequently one of the first signs of perimenopause and can begin several years before periods stop, sometimes in the late 30s or early 40s while cycles are still regular.
What can help with hot flushes naturally?
Support depends on the driver, so testing comes first. Where the picture is hormonal, naturopathic care may focus on hormone balance, blood-sugar stability, stress and cortisol rhythm, sleep and known triggers such as alcohol and caffeine.
Flushes Aren't Something to Just Get Through.
If heat, sweats and broken sleep are running your day, let’s find out what is actually driving them rather than waiting it out.
