Glossary

What are hot flushes (hot flashes)?

A hot flush (called a hot flash in the US) is a sudden wave of heat over your face, neck and chest, often with sweating and red, flushed skin. When it happens while you sleep, it's called a night sweat.

Written by Poshan Labs. Sources are named on the page. Last updated 26 October 2026.

Hot flushes: a sudden wave of heat over your face, neck and chest, often with sweating and red, flushed skin.

Why hot flushes matter

Hot flushes are one of the most common signs of perimenopause and menopause. As many as 3 in 4 women get them in the years around menopause.

They're caused mainly by falling oestrogen, which unsettles your body's temperature control.

What to expect:

  • Each one usually lasts one to five minutes.
  • Some women get more than ten a day, for months or even years.
  • Night sweats can break your sleep, leaving you tired and irritable.

Thyroid problems, infections and some medicines can also cause them.

What helps with hot flushes

Notice your own triggers. Common ones are:

  • spicy food
  • hot or caffeinated drinks like chai and coffee
  • alcohol
  • hot weather, heavy clothes and hot baths
  • smoking and stress

To stay cool:

  • Dress in cotton layers.
  • Keep a fan nearby.
  • Sip cold water or chaas.
  • Use light sheets at night.

Regular exercise, ideally somewhere cool, and keeping a healthy weight can help, as extra weight can make hot flushes stronger.

Slow breathing, yoga or meditation can calm the stress side. If they're severe, talk to your doctor.

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