Night sweats – a symptom that should not be ignored

Do you ever wake up in the middle of the night drenched in sweat, even though your bedroom is at a moderate temperature? Night sweats are a symptom that is easy to ignore. In fact, their causes can vary from trivial to serious. We tell you when changing your habits is enough, and when it is worth consulting a doctor.
Sweating is a natural function that helps our bodies regulate their temperature. At night, metabolism slows down and the body is supposed to regenerate – but if the sweat glands are working at full speed at that time, it’s a sign that something might be wrong. When night sweats bother us often and for no apparent reason, it’s worth taking a closer look.
Most common causes
The most common, yet harmless causes of excessive sweating at night include, among others, too high a temperature in the bedroom, non-breathable pajamas or a large dinner just before going to bed. In such cases, it is enough to change thick bedding for lighter ones, air the room and make sure to have a light dinner. Night sweats can also be caused by stress - mental tension stimulates the nervous system and increases the secretion of sweat. After a hard day, it is worth calming down and relaxing before going to bed, e.g. by reading a book, taking an aromatic bath or using breathing techniques. The cause may also be an infection with a high temperature - in such a case, the symptoms disappear along with the disease.
Hormonal changes
In women, the most common cause of night sweats is hormonal fluctuations, especially during menopause. The drop in estrogen levels disrupts the thermoregulation mechanism, which leads to hot flashes and night sweats. Hormonal treatment can be helpful, as can natural preparations with phytoestrogens (e.g. soy, red clover) – but always after consulting a doctor.
Medicines and stimulants
Excessive sweating can also be a side effect of taking certain medications, including antidepressants, antipyretics, steroids, and insulin. Symptoms can also be exacerbated by alcohol, caffeine, and spicy foods eaten before bed.
When should you see a doctor?
If you wake up drenched in sweat several times a week, and the problem persists despite improving your sleep hygiene and changing your habits, it is worth consulting a doctor. Night sweats can be a symptom of more serious illnesses, especially if they are accompanied by fever, weight loss, or general weakness. This clinical picture can indicate, among other things, chronic infections (tuberculosis, mononucleosis), diabetes, hyperthyroidism, autoimmune diseases, and even cancers such as lymphoma. Sweating can also be a symptom of obstructive sleep apnea, especially in overweight people who snore.
Don't ignore the signals
Although night sweats are not always a sign of something serious, their frequent occurrence, disturbing your night's rest, or the presence of additional symptoms should prompt a visit to your primary care physician or endocrinologist. Early diagnosis and appropriate treatment will not only improve the quality of your sleep, but may also protect you from more serious health problems.
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Updated: 10/06/2025 07:58
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