You know the one. You’re mid-sentence in a meeting, or you’re standing in the kitchen, or you’re three hours into sleep — and suddenly you’re burning up from the inside, sheets are soaked, and the question your brain asks itself is whether you’re actually sick. You’re not. You’re in the vasomotor territory of perimenopause and menopause.

What’s actually happening

Hot flashes (and their night-time variant, night sweats) are driven by a narrowing of your body’s thermoregulatory “neutral zone” — the temperature range in which you don’t need to actively cool or warm yourself. Falling estrogen appears to narrow this zone, so tiny shifts in core temperature that used to go unnoticed now trigger a full cooling cascade: skin flush, sweating, racing heart.

It’s not your imagination. It’s not anxiety. It’s a real, measurable physiologic event.

What actually stops them (in order of evidence strength)

  • Hormone therapy (HRT) is the most effective treatment. Full HRT guide.
  • Fezolinetant (Veozah) — a newer non-hormonal prescription that targets the brain’s thermoregulation directly.
  • Certain SSRIs and SNRIs (low-dose paroxetine, venlafaxine, escitalopram) reduce frequency and severity.
  • Gabapentin — especially useful for night sweats.
  • Lifestyle triggers — alcohol reduction, layered clothing, bedroom cooling, trigger avoidance.
  • Supplements — modest evidence; evening primrose and black cohosh are the most-discussed.
  • Cognitive behavioral therapy — reduces distress and may reduce perceived frequency.
✦ For most women

Hot flashes respond most reliably to HRT. If HRT isn’t appropriate, fezolinetant, certain SSRIs, or gabapentin are the next most effective options. Supplements and lifestyle changes help at the margins but rarely produce dramatic change on their own for severe symptoms.

The triggers worth knowing

Not every hot flash has an obvious trigger, but these show up repeatedly in community reports:

  • Alcohol (especially red wine and spirits) — often the single most modifiable trigger
  • Caffeine, especially later in the day
  • Spicy food
  • Warm rooms and bedrooms
  • Stress and anxiety episodes
  • Hot showers within an hour of bed
  • Certain fabrics — synthetic sleepwear traps heat

Where this hub goes from here

Articles in this hub cover: how to stop hot flashes fast in the moment, natural remedies for night sweats, the drinks and foods that help (or provoke), how many hot flashes a day is normal, the supplements with evidence, and the cooling products worth the money.

Everything we've written on Hot Flashes