The Significance of Night Sweats in Covid-19 Strains and Variants

Is Your COVID-19 Night Sweat a Symptom of Something Else?

Sweating is the body’s natural way of controlling its temperature. However, sweating at night during the COVID-19 pandemic is a sign that your infection may be getting worse.

The UK has seen a rise in Covid cases since July due to the Eris and Pirola variants of the virus. But immunologist Luke O’Neill warns that these new strains are bringing different symptoms, including one that strikes at night.


Night sweats are episodes of heavy perspiration during sleep, so heavy that your night clothes or bedding end up soaked. They’re usually a sign of an underlying illness or condition. It’s common to experience them during the flu, menopause, anxiety or during pregnancy. They can also happen at certain times during the menstrual cycle.

COVID-19 may cause you to sweat more at night, especially if you have a fever. But night sweats aren’t a typical symptom of the virus, and you shouldn’t assume that they’re related to your infection.

According to the ZOE Health app, which gathers self-reported symptoms from people who have been diagnosed with the coronavirus, night sweats are one of the newer symptoms that seem to be associated with the BA.5 strain of the virus. This is in addition to a sore throat, headache and a runny nose. Night sweats are also one of the symptoms that medical professionals say distinguishes Omicron from Delta and the original COVID-19 strain, which both caused a loss of smell and taste and a sore throat.


Night sweats are typically heavy episodes of sweating while asleep, soaking through your clothes and sheets. They can make you drenched, requiring a change of pajamas and sheets. They can also be a symptom of certain diseases, such as cancer or high anxiety, and some medications, including antidepressants.

It’s normal to sweat a bit while you sleep, especially in warm weather or if you are hot. But when it’s drenching and you wake up covered in sweat, that could be an indicator of a COVID-19 infection. This is a common symptom of the Omicron and Delta variants, but it’s been found to be one of the first symptoms of the BA.5 virus.

It’s important to get tested if you experience this symptom, as well as the other telltale signs of the pandemic, like fever, coughing, tiredness and sore throat. It’s also a good idea to isolate yourself and wear a mask, so you don’t infect others, especially those who are vulnerable.


For most people with COVID-19, night sweats are a normal part of the infection. Usually they come along with other symptoms like a cough, loss of taste or smell and shortness of breath. These symptoms don’t require any specific treatment and will disappear once the body has cleared the coronavirus.

It’s also important to stay hydrated by drinking plenty of water and juice. A cold shower or bath can also help if the sweating gets too much.

If you are unsure whether your night sweats are due to COVID-19 or another reason, it’s best to consult your doctor for a diagnosis. Book an online appointment with a doctor now to get a fast and accurate assessment of your COVID-19 symptoms. They’ll ask you about how often the sweating is occurring, how long it lasts and whether or not it occurs at other times of the day. They will also check your temperature and take a blood sample to check for the presence of the virus in your body.


The best way to prevent COVID-19 night sweats is to be up-to-date on your vaccination. This will help to prevent the coronavirus from spreading further. You can also try to stay hydrated, and rest often. If you have any other symptoms of the virus, like a fever or loss of taste and smell, speak to a doctor straight away.

COVID-19 Sweating at Night

Although not one of the main symptoms, night sweats can be a warning sign that you have contracted the coronavirus. Sweating at night is a common symptom for both the Eris and Pirola variants of the coronavirus, as well as the Omicron strain that caused cases to skyrocket in 2021 and 2022. Sweating is particularly common in patients with the Delta variant of the virus, and may continue even months after infection. You can find out if you have COVID-19 by taking a lateral flow test from your nearest health centre, or online at home.

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