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CANCER INFORMATION HUB

Hot Flushes During and After Cancer Treatment

Hot flushes are a common side effect of some cancer treatments, particularly those affecting hormone levels. Episodes of sudden heat, sweating and flushing can affect comfort, sleep, concentration and quality of life.

Understanding why hot flushes occur and exploring ways to manage them help reduce their impact during treatment and recovery.

What Are Hot Flushes?

Hot flushes are sudden sensations of heat that can spread through the face, neck, chest and body.

Episodes may last from a few seconds to several minutes and are often accompanied by:

  • Sweating

  • Flushing of the skin

  • Increased heart rate

  • A sensation of warmth or heat

  • Chills following the episode

Although not usually dangerous, hot flushes can become distressing when they occur frequently or interfere with daily activities and sleep.

Why Can Cancer Treatment Cause Hot Flushes?

Many cancer treatments influence hormone levels.

Hormones play an important role in regulating body temperature.

When hormone levels change, the body's temperature regulation system may become more sensitive.

Hot flushes are particularly common during:

Hormonal Therapies

 

Treatments used for:

  • Breast cancer

  • Prostate cancer

  • Certain gynaecological cancers

may alter hormone levels and trigger hot flushes.

Examples include:

  • tamoxifen

  • anastrozole

  • letrozole

  • exemestane

  • goserelin

  • leuprorelin

  • triptorelin

  • degarelix

  • enzalutamide

  • abiraterone

Hot flushes are among the most frequently reported side effects of these treatments.

Treatment-Induced Menopause

 

Some cancer treatments (such as cyclophosphamide, doxorubicin, paclitaxel, and docetaxel) can lead to temporary or permanent menopause.

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This may result in:

  • Hot flushes

  • Night sweats

  • Sleep disturbances

  • Mood changes

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In these situations, symptoms arise because of changes in hormone production rather than the cancer itself.

Other Cancer Treatments

 

Chemotherapy itself is less commonly a direct cause of hot flushes, but some treatments may affect ovarian function and hormone production, leading to temporary or permanent menopause.

Examples include certain chemotherapy regimens used in breast cancer and other cancers.

Some medications commonly used alongside cancer treatment may also contribute to temperature regulation changes, including:

  • dexamethasone, prednisoloneCorticosteroids, 

  • Certain pain medications

  • Some antidepressants

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What Do Hot Flushes Feel Like?

People experience hot flushes differently.

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Common descriptions include:

  • Sudden waves of heat

  • Intense warmth in the face and upper body

  • Sweating without physical exertion

  • Flushing of the skin

  • Feeling overheated

  • Chills after the episode ends

Some individuals experience only occasional episodes, while others may experience several hot flushes every day.

Night Sweats and Sleep Disruption

Hot flushes frequently occur during the night.

These episodes are often referred to as night sweats.

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Symptoms may include:

  • Waking suddenly feeling overheated

  • Excessive sweating

  • Disturbed sleep

  • Difficulty returning to sleep

 

Repeated sleep disruption may contribute to:

  • Fatigue

  • Reduced concentration

  • Irritability

  • Reduced resilience

 

For many people, the impact on sleep becomes one of the most challenging aspects of hot flushes.

How Can Hot Flushes Affect Daily Life?

Although hot flushes are often viewed as a relatively minor side effect, their impact can be significant.

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People frequently report effects on:

  • Sleep quality

  • Energy levels

  • Concentration

  • Confidence

  • Social activities

  • Exercise

  • Work performance

  • Emotional wellbeing

 

When episodes occur frequently, they can become a persistent source of discomfort and frustration.

How Long Do Hot Flushes Last?

The duration varies considerably.

Some people experience symptoms for a few months.

Others continue to experience hot flushes for several years, particularly when long-term hormonal treatments are involved.

The frequency and intensity of episodes often fluctuate over time.

Can Hot Flushes Be Improved?

In many cases, yes.

Although hot flushes are a recognised consequence of hormonal changes, they do not always need to be simply accepted as an unavoidable part of treatment.

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Clinical experience shows that many people experience meaningful improvements when symptoms are addressed proactively.

Integrated supportive care approaches helps reduce:

  • Frequency of episodes

  • Intensity of hot flushes

  • Night sweats

  • Sleep disruption

  • Associated fatigue

  • Impact on quality of life

 

Many patients report improvements in comfort, sleep quality and overall wellbeing when symptoms are addressed early.

For some individuals, reducing the burden of hot flushes has a substantial impact on daily life, particularly when sleep and energy levels begin to improve.

Managing Hot Flushes

Management depends on the individual's symptoms, treatment and overall health.

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Approaches may include:

  • Identifying triggers

  • Managing room temperature

  • Wearing layered clothing

  • Improving sleep habits

  • Maintaining physical activity

  • Managing stress

  • Medical treatments recommended by the oncology team

  • Supportive care approaches tailored to the individual

 

Because hot flushes often affect sleep, energy levels and emotional wellbeing simultaneously, addressing the wider impact of symptoms is frequently just as important as reducing the episodes themselves.

The Relationship Between Hot Flushes, Fatigue and Sleep

Hot flushes rarely occur in isolation.

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Many people find that:

  • Night sweats disturb sleep

  • Poor sleep worsens fatigue

  • Fatigue reduces resilience

  • Reduced resilience makes symptoms feel more difficult to manage

 

This is one reason why a broader supportive care approach proves helpful.

Improving sleep quality reduces the overall burden of hot flushes even when the episodes themselves continue to occur.

When Should You Seek Additional Support?

You should discuss symptoms with your healthcare team if hot flushes:

  • Occur frequently

  • Affect sleep

  • Interfere with daily activities

  • Cause significant discomfort

  • Affect quality of life

 

Seeking support early helps reduce symptom burden and improve overall wellbeing.

Many individuals seek support because they wish to remain active, comfortable and well-rested during treatment and recovery.

Living Well With Hot Flushes

Although hot flushes can be frustrating and sometimes exhausting, many people find that symptoms improve over time.

Understanding triggers, managing contributing factors and seeking appropriate support help reduce their impact and improve quality of life.

 

For many individuals, even modest improvements in symptom frequency, sleep quality or daytime energy can make a meaningful difference to everyday wellbeing.

Looking for Personalised Support?

Hot flushes and night sweats can affect far more than physical comfort alone. Sleep disruption, fatigue, reduced concentration and changes in wellbeing often accompany these symptoms.

 

At Rowan Health, we regularly support individuals experiencing treatment-related hot flushes, night sweats and hormonal treatment side effects. Many people seek support because symptoms are affecting their sleep, energy levels, work performance or quality of life.

 

Our personalised integrated supportive care programmes aim to reduce symptom burden, improve sleep quality and help patients maintain comfort, resilience and wellbeing throughout treatment and recovery.

Many patients report meaningful improvements in symptom intensity, sleep quality and overall wellbeing when these symptoms are addressed proactively rather than simply endured.

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Learn how our personalised supportive care programmes help patients navigate treatment-related symptoms, recovery and life beyond cancer.

About this information

This article has been prepared by Julien Baron-Meyet, Consultant in Integrative & Supportive Care, with over 20 years' clinical experience supporting people living with cancer and complex health conditions.

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The information on this page is intended for education and should complement—not replace—the advice of your healthcare team.

READY TO TALK ?

Take the first step

If you would like to discuss supportive care during treatment or recovery, Rowan Health offers personalised consultations designed around your diagnosis, treatment pathway, symptoms and recovery goals.

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