Perimenopause Cold Flashes and Chills: The Overlooked Vasomotor Symptom
Hot flashes get all the attention, but sudden chills and cold flashes are the flip side of the same disrupted thermostat. Here's what to know and track.
Everyone warns you about hot flashes. Almost nobody mentions the opposite — the sudden wave of cold, the shivering that comes out of nowhere, the chill that leaves you reaching for a jumper in a warm room. Cold flashes are real, they are part of the same story as hot flashes, and they are worth understanding rather than dismissing.
The same thermostat, the other direction
Hot flashes and cold flashes are both vasomotor symptoms — they come from the brain's temperature-regulation centre becoming more sensitive as estrogen fluctuates. The thermostat narrows its comfortable range and overreacts. Usually that means shedding heat in a hot flash; sometimes it means overshooting the cooling, which lands as a cold flash or a chill.
That is why the two so often travel together. A classic pattern is a hot flash followed minutes later by a chill, as the body's heat-shedding response over-corrects. Seen on their own, they feel like two random problems. Logged in sequence, they are clearly one system swinging.
Cold flash, or something else?
| Pattern | What it looks like | What to consider |
|---|---|---|
| Cold flash | Sudden, brief chill or shivering that passes | Vasomotor — the flip side of hot flashes |
| Chill after a hot flash | Hot flash, then cold and shivery for a few minutes | The cooling response overshooting |
| Constantly cold | Feeling cold much of the time, not in waves | Underactive thyroid, low iron — worth a test |
| Chills with fever | Shivering with a raised temperature | Infection — see a GP |
| Chills with anxiety | Cold and shaky during anxious or panicky moments | Anxiety overlap — track the trigger |
If you are constantly cold rather than getting brief waves, that leans away from vasomotor symptoms and toward causes like thyroid or iron — our guide to perimenopause or thyroid covers how to tell, and a thyroid problem has a simple blood test.
What helps
- Layer so you can add and remove clothing as the swings come — a wrap within reach beats a thermostat war with the room.
- Treat the hot flashes too, since the cold flashes are the other end of the same swing; the vasomotor guidance in the hot flash guide and night sweats guide applies.
- Reduce triggers such as caffeine and alcohol, which affect temperature regulation.
- Notice the anxiety overlap — if chills arrive with anxious or panicky moments rather than with heat, that is a different lever.
When to see a doctor
How Perim fits in
Perim does not diagnose — it makes an easily-dismissed symptom visible and connects it to the rest.
- Cold flashes and hot flashes on one timeline, so the sequence is obvious.
- Anxiety, sleep and cycle dates alongside, because chills cluster with all three for some people.
- A summary that shows the pattern rather than a scatter of odd moments.
See Perim on the App Store, or start with the seven patterns beyond hot flashes.
Frequently Asked Questions
Can perimenopause cause cold flashes?
Yes. Cold flashes — a sudden wave of chill, shivering or feeling icy — are a less-discussed vasomotor symptom of perimenopause. They come from the same disrupted temperature control that causes hot flashes; the body's thermostat overshoots in the other direction. Some people get cold flashes on their own, and some get them straight after a hot flash as the body over-corrects.
What's the difference between a cold flash and just feeling cold?
A cold flash comes on suddenly and passes, often with shivering or goosebumps, rather than a steady coldness from a cool room. Feeling cold all the time is different and can point to other causes such as an underactive thyroid or low iron, which are worth checking.
Why do I get a chill after a hot flash?
During a hot flash the body works hard to shed heat — blood vessels widen and you sweat. When the flash ends, that cooling response can overshoot, leaving you cold and shivery for a few minutes. Logging the sequence helps you see that the two are linked rather than separate problems.
When should cold flashes or chills be checked?
See a GP if chills come with a fever, unexplained weight loss, night sweats that soak the bed, a constantly cold feeling, or fatigue and low mood — these can point to thyroid problems, low iron, infection or other causes that deserve a test rather than being assumed hormonal.
How can I make cold flashes easier to manage?
Layered clothing you can add and remove, keeping a wrap nearby, avoiding sudden temperature swings, and managing hot flashes (since the two are linked) all help. Reducing triggers such as caffeine and alcohol, which affect temperature regulation, can also reduce the swings.
Are cold flashes a sign of anxiety?
They can overlap. Anxiety and panic can cause chills, shivering and shakiness, and perimenopause raises anxiety for many people, so the two can travel together. Tracking whether cold flashes cluster with anxious moments or with hot flashes helps tell which pattern is driving them.
Sources
- NHS — Menopause and perimenopause symptoms
- Office on Women's Health — Menopause symptoms and relief
- NHS — Menopause and perimenopause: things you can do
- ACOG — Menopause Symptom Tracker
- National Institute on Aging — Staying healthy during and after menopause
Written for general wellness education on 14 August 2026. Not medical advice and not a diagnosis. The symptoms described here have several possible causes — speak to a qualified health professional about your own symptoms, tests or treatment. If you have thoughts of self-harm, seek help immediately.