How to Treat Night Sweats and Hot Flashes After Menopause

Night sweats and hot flashes are the symptoms that most women link with menopause, and for good reason: they affect about 75% of women going through the transition. For some, they’re a brief annoyance. For others, they mean soaked sheets, broken sleep, and sweating through a work meeting several times a day. At Sovereign Female in downtown Toronto, we help women find treatment that brings these unpleasant symptoms under control, from hormone therapy to non-hormonal medication. For underarm sweating that won’t let up, we also offer miraDry through our sister clinic.

When it comes to night sweats and hot flashes after menopause, know that you don’t need to wait them out. Effective treatment exists for almost every woman, including those who can’t take hormones.

What Does a Hot Flash Feel Like?

A hot flash usually starts as a sudden heat wave in the face, chest, and neck that spreads upward or outward. Your skin may flush red, your heart may race, and you’ll often start sweating, sometimes heavily. As the heat fades, many women feel a chill. Each episode usually lasts a few minutes, though some go on longer.

Not every episode is dramatic. Many women describe milder “warm flashes,” a brief rise in temperature without much sweating. These usually come from the same cause and respond to the same treatment.

Night sweats are simply hot flashes that occur while you sleep. A typical pattern is waking up drenched in sweat in the middle of the night, often with sweat concentrated around the neck and chest, then lying awake while you cool down.

What Causes Hot Flashes and Night Sweats?

The brain’s temperature control centre, the hypothalamus, keeps your body within a narrow, comfortable range. Falling estrogen during perimenopause and menopause makes that range even narrower. A tiny rise in core temperature that your body used to ignore is now read as overheating, so it responds with an all-out effort to cool down: blood vessels near the skin widen, causing flushing, and sweat glands switch on.

Some things can trigger a hot flash or make it stronger:

Alcohol, especially red wineCaffeineSpicy foodHot drinks, hot showers, and warm roomsStress and anxietySmokingTight clothing and synthetic fabricsCertain medications, such as tamoxifen and some antidepressants

Why Are Hot Flashes Worse at Night?

Several things combine at night. Your body temperature naturally shifts through the sleep cycle, which can tip a narrowed thermostat into a hot flash. Heavy bedding, memory-foam mattresses, and a partner’s body heat trap warmth. And because you’re asleep, you can’t remove a layer or step outside as you would during the day, so the episode often builds until the sweating wakes you. Some women find that they notice hot flashes only at night, simply because daytime episodes are milder or easier to ignore.

The bigger problem with nighttime hot flashes is lost sleep. Repeated waking leads to fatigue, poor concentration, irritability, and low mood the next day, which is why night sweats are often the symptom that women want treated the most.

When Do Hot Flashes Start, and How Long Do They Last?

Hot flashes usually begin in perimenopause, often in the early to mid-40s, while periods are still coming, if irregularly. Perimenopause hot flashes may appear in clusters with weeks or months of calm in between. They tend to become the most frequent and intense in late perimenopause and the first year or two after the final period.

How long do hot flashes last after menopause? Longer than most women expect. They typically continue for a median of 7.4 years in total, and women whose hot flashes start early in perimenopause tend to have them the longest. Some women still have them into their 60s and beyond.

Night sweats in older women are less often caused by menopause alone. If they begin — or return strongly — many years after your last period, it’s worth having them checked for another cause.

How to Treat Night Sweats and Hot Flashes

The right menopause treatment for hot flashes depends on how much they disrupt your life, your age and stage of menopause, and your medical history. These are the options that we discuss with our patients.

Hormone Replacement Therapy

Hormone replacement therapy (HRT) is the most effective treatment for menopause-related night sweats and hot flashes. Replacing estrogen widens the body’s comfort range again, and most women notice a clear drop in the number and severity of episodes within a few weeks. If you still have a uterus, you’ll also take progesterone to protect its lining.

For healthy women under 60 or within 10 years of their final period, the benefits of hormone therapy generally outweigh the risks. HRT comes as patches, gels, sprays, and pills. Some women prefer bioidentical hormones, which are chemically identical to the hormones the ovaries make. Your doctor will review your personal and family history before prescribing.

Non-Hormonal Medications

Some women can’t take estrogen, including many with a history of breast cancer, blood clots, or stroke. Others simply prefer not to. Several prescription medications have been shown to reduce hot flashes without hormones:

• Fezolinetant (Veozah): A newer medication that acts directly on the brain’s temperature control centre. It was approved by Health Canada for moderate to severe hot flashes and night sweats.
• Certain antidepressants: Low doses of some SSRIs (selective serotonin re-uptake inhibitor) and SNRIs (serotonin norepinephrine re-uptake inhibitor) reduce hot flashes, even in women who aren’t depressed.
• Gabapentin: Taken at bedtime, it can reduce night sweats and help with sleep.
• Oxybutynin: Usually prescribed for overactive bladder, it can also reduce sweating, though it’s generally avoided in older women.

There are also recommended non-drug options such as cognitive behavioural therapy. They help reduce how much hot flashes bother you and how often they happen.

miraDry for Underarm Sweating

Many women find that sweating in general increases around menopause, not only during hot flashes. Underarm sweat in particular can become heavier, more frequent, and more noticeable on clothing. Hormone treatment calms hot flashes, but it doesn’t always resolve this everyday sweating.

miraDry, offered at our sister clinic, Sovereign Skin (in the same building), uses controlled microwave energy to permanently eliminate sweat glands in the underarms. Because these glands don’t grow back, the results are long-lasting, with an average 80% to 90% reduction in sweat and odour. Treatment is done under local anesthetic and takes about an hour. Most patients need 2 sessions about 3 months apart. You can return to work the same day, though swelling and tenderness are common for a few days.

miraDry treats the underarms only. It won’t stop hot flashes or night sweats, so it works best as one part of a plan that also addresses the hormonal cause.

Botox for Excessive Sweating

For heavy sweating in other areas, such as the hands, feet, or scalp, Botox injections block the nerve signals that switch on sweat glands. Results appear within days and last about 6 to 12 months. You can learn more about all of our excessive sweating treatments on the Sovereign Skin website.

How to Stop Night Sweats at Home

Home measures won’t stop hot flashes on their own. Treatments like cooling and paced breathing don’t reduce how often they happen. They can, however, make each episode easier to get through and help you sleep. Small changes that help:

To stop a hot flash fast during the day, sip cold water, cool your wrists or the back of your neck, and remove a layer. Dressing in layers that you can take off quickly makes this easier at work.

Natural Remedies for Menopause Night Sweats

Many women look for natural options first, such as soy, black cohosh, evening primrose oil, or lists of “foods that fight hot flashes.” Unfortunately, supplements and soy products haven’t been shown to reliably reduce hot flashes, and some herbal products can interact with medications or affect the liver. A balanced diet is good for your health during menopause, but no single type of food is likely to make a real difference with hot flashes.

The natural approaches with the best track record are losing weight if you’re carrying extra weight, which can reduce hot flashes for some women, and stopping smoking. If home measures and lifestyle changes still leave you sweating through the night, it’s time to talk about medical treatment.

When Should You Worry About Night Sweats?

Most night sweats in women in their 40s and 50s are caused by perimenopause or menopause. They can also come from other causes, including infections, an overactive thyroid, diabetes, sleep apnea, anxiety, and medications such as antidepressants.

Many women search whether hot flashes can be a symptom of cancer. Rarely, night sweats are linked to cancers such as lymphoma or leukemia, but these usually come with other symptoms like those above. Hot flashes on their own, at the typical age of menopause, are almost always hormonal. Night sweats that start well after menopause or that don’t fit your usual pattern are worth having checked.

Frequently Asked Questions