Sweating During Pregnancy: Causes And Ways To Deal With It

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Hormonal changes can be the culprit of excess sweating during pregnancy. Most women experience sweating more than usual in pregnancy. A slight increase in temperature can make a pregnant woman feel hot and sweat a lot. Although it is uncomfortable, sweating is not a cause for concern in pregnancy. You can drink more water to compensate for the water loss through sweating.

Read on to know more about sweating during pregnancy and ways to deal with it.

In This Article

When Does Excessive Sweating Start During Pregnancy?

You may experience sweating throughout the pregnancy. An increase in body temperature during pregnancy might result in sweating. Sweating is nature’s way of helping the body to regulate its temperature, a process referred to as thermoregulation. HypothalamusiPart of the brain that produces hormones involved in various body functions such as regulating heart rate, mood, sleep, and hunger controls body temperature. During pregnancy, the body temperature increases slightly which is a natural byproduct of the growing baby. Hormonal fluctuations, increased blood volume, and weight gain contribute to this phenomenon.

Excessive sweating is experienced more during the night than during the day. And this condition is termed as sleep hyperhidrosis or night sweats (1), which is usually considered as one of the symptoms of menopauseiTermination of a woman’s menstrual cycle in a woman due to a decrease in reproductive hormones . However, in the case of pregnant women, it could be due to a sudden rise and fall of the pregnancy hormones, estrogeniA hormone responsible for the development and functioning of female reproductive organs , and progesteroneiA female reproductive hormone that plays an essential role in menstruation, pregnancy, and breastfeeding (2).

There could be various reasons for excessive sweating during pregnancy.

What Are The Causes Of Sweating/ Excessive Sweating During Pregnancy?

Some women may have sweating during the day while others at night. A few may sweat during the day and night too. Below are some of the common reasons why you could sweat during pregnancy:

  1. Increased metabolism: During pregnancy, the mother’s body burns more calories and generates more heat. According to a comprehensive analysis conducted by multiple institutions, there were varying increments in resting energy expenditure during different stages of pregnancy. The increases were observed to range from 0.5% to 18.3% during the early pregnancy period, from 3.0% to 24.1% during the mid-pregnancy period, and from 6.4% to 29.6% during the late pregnancy period. Therefore, the body needs more energy for maintaining its functions and supporting the growing baby. This, in turn, is believed to activate sweat glands, resulting in perspiration.
Increased metabolism can cause sweating during pregnancy

Image: Shutterstock

  1. Hyperthyroidism: If you have hyperthyroidism during pregnancy, you might experience higher body temperature and excessive pregnancy-related sweating anytime during the day and night (3). The condition could continue postpartum as well. Hypothyroidism is abnormal medical condition, which may speed up heart rate and body systems causing excessive sweating and other symptoms.
  1. Hypoglycemia: Diabetes during pregnancy can cause low blood sugar levels or hypoglycemiai during pregnancy, which can make you sweat (4). When your blood sugar level dips, your body starts a de­fense reaction, resulting in excessive sweating. This situation might be accompanied by symptoms such as anxiety, dizziness, blurry vision, tremors, slurred speech, and extreme fatigue (5). It’s crucial to attend to the symptoms timely and prioritize maintaining stable blood sugar levels to ensure overall health and well-being during pregnancy.
  1. Medications: Sweating is a side effect of some medications. Taking certain medicines such as antipyreticsiA class of medications used to reduce fever by reducing body temperature and antihypertensivesiA class of medications employed to treat high blood pressures could result in excessive sweating (6).
  1. Increased blood flow: More blood circulates in the body during pregnancy, which makes your body warmer, and could result in increased sweating (7). By the begging of third trimester, the blood volume may increase about 50%
protip_icon Did you know?
Many women say they feel warmer during pregnancy. However, there’s limited evidence suggesting that expecting women have higher core body temperatures than usual due to pregnancy (11).
  1. Infections: A fever or other illness like a urinary tract infection during pregnancy may cause an increase in body temperature (8).
  1. High levels of progesterone: During pregnancy, the levels of the hormone progesterone go up. This may increase body temperature, which might result in sweating (9) or hot flashes in some cases.
  1. Changing hormones: These changes are responsible for various pregnancy symptoms and discomforts, including a slight rise in body temperature
Changing hormones can cause sweating during pregnancy

Image: Shutterstock

  1. Weight gain: When the pregnant woman gains extra weight, especially in the third trimester, she makes an extra effort to move and this generates more heat. The body’s center of gravity changes continuously, making the body work harder to keep its balance, causing more sweating
  1. Weather: When you spend time outdoors in hot, humid weather.
  1. Physical activity: When you exercise or participate in any activity that strains your body.
  1. Anxiety: Sweating is a natural response to anxiety.
  1. Others: Eating spicy food or consuming caffeinated beverages

Irrespective of the cause of sweating, there are a few ways that could help manage it and avoid the discomfort.

How To Deal With Excessive Sweating In Pregnancy?

While you cannot entirely avoid sweating during pregnancy, you could follow some simple tips to reduce its severity and prevent pregnancy discomforts.

  1. Avoid going out in hot weather: Do not step out in the sun as high temperatures could worsen the sweating. Even if you are exercising, schedule it either in the mornings or evenings. In addition, wear light-colored, soft, and airy clothes to cope with sweating during pregnancy.
Avoid going out in hot weather when pregnant

Image: Shutterstock

  1. Bring in some changes in your food: Avoid spicy food and hot drinks that might increase your body temperature. Increase the consumption of water and fluids to stay hydrated and beat the heat.
  1. Treat infections in time: If you have any illness or infections, see that you are getting it treated on time. Do not delay a visit to the doctor. You may also ask your doctor if any medicine you are using could cause sweating as a side effect.
  1. Notice changes: Most of the time, hormonal imbalance causes sweating during pregnancy. Keep noticing the changes in your body, and let your doctor know about them. They might suggest dietary changes.
  1. Others: You could also use talc-free powder if you are sweating excessively. This might not reduce sweating but could absorb the excess moisture.

These tips could help you manage sweating during pregnancy. However, the condition may not end right away. It might continue after the delivery as well. Nevertheless, it tends to go away with time.

Although it is not a harmful condition, sweating could become a major discomfort and would need medical intervention in some cases.

protip_icon Quick tip
Wear antiperspirant and keep baby wipes handy for a fast cool-down when feeling sweaty. You may also carry a handheld fan when you go out.

When Should You Consult The Doctor?

Call a doctor f you are sweating profusely when pregnant

Image: Shutterstock

If you are sweating profusely, even when the weather is pleasant and cool, tell your doctor about it. Also, fever, increased heart rate, and too much discomfort accompanied by sweating should be reported. The doctor will examine your symptoms and advise you accordingly.

In the next section, we answer some of your common concerns about sweating during pregnancy.

Frequently Asked Questions

1. Is sweating an early symptom of pregnancy?

Sweating could be one of the common and early symptoms of pregnancy. Fluctuation in the hormones and increased metabolism may increase your body’s temperature, resulting in sweating.

2. Are night sweats dangerous during pregnancy?

Generally, night sweats are not considered to be dangerous, although they might disturb your sleep. But when you have symptoms such as itching, rashes or fever along with sweating, then you may report this to the doctor.

3. How long do pregnancy night sweats last?

The duration of night sweats during pregnancy varies based on your medical history and other causes that could trigger excessive perspiration during pregnancy. You might notice it in the first and last stages of pregnancy, but sometimes it may continue after childbirth too.

4. How long do pregnancy sweats last?

Pregnancy sweats might start in the first trimester and continue after delivery. A study published in the National Library of Medicine stated that pregnancy sweats might persist for three months after pregnancy (10).

A slightly increased body temperature along with weight gain and hormonal changes may increase sweating during pregnancy. Dietary changes, higher metabolic rate, anxiety, and conditions such as hyperthyroidismiA condition marked by excess thyroid hormones in the body, leading to weight loss, increased heart rate, and other symptoms and hypoglycemia may also increase sweating. You cannot avoid it but could reduce it if you maintain proper hydration, avoid spicy food and caffeinated drinks, and restrict venturing out in hot weather conditions. Check with your doctor if you experience excessive sweating even in ambient conditions and have additional symptoms such as fever or increased heart rate.

Infographic: Foods To Keep You Hydrated During Pregnancy

Excessive sweating during pregnancy leads to discomfort and increases the risk of dehydration. We present a list of food items with high water content, ensuring adequate hydration. Make sure to save this infographic so that you can add these items to your grocery list for the next time.

water-gain to make up for the water loss (infographic)

Illustration: Momjunction Design Team

Key Pointers

  • During pregnancy, the body temperature increases slightly, resulting in sweating.
  • There can be other contributing factors such as hormonal changes, increased metabolism, increased blood flow, and low blood sugar.
  • Measures such as avoiding going out in hot weather, decreasing spicy food, and proper water intake may help manage sweating during pregnancy.
  • Consult a doctor if you are sweating irrespective of the weather or have a fever and increased heart rate.
Sweating During Pregnancy_illustration

Image: Dalle E/MomJunction Design Team

Night sweats during pregnancy can be a distressing time for you. You could be worried about whether this is normal or what could this mean. Gain insights into this phenomenon through this enlightening video.


MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.

1. Night sweats ; International Hyperhidrosis Society(1998)
2. Menopause; Baylor College of Medicine
3. Hyperthyroidism during pregnancy; Chu Sainte-Justine (2017)
4. Gestational Diabetes: A Guide for Pregnant Women; Oregon Health & Science University (2009)
5. Diaphoresis: Causes & Treatment; Cleveland Clinic
6. A. J. Viera, M. M. Bond, and S. W. Yates; Diagnosing Night Sweats; American Family Physician (2003)
7. Common health problems in pregnancy; NHS UK
8. Urinary tract infection – adults; Allina Health
9. Regulation of Body Temperature; Antranik Strength & Flexibility Expert
10. T W Hartgill et al; Core body temperature and the thermoneutral zone: a longitudinal study of normal human pregnancy; National Library of Medicine.
11. Hot weather and high body temperature during pregnancy; NCT

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Dr. Irene (Eirini) Orfanoudaki is a gynecologist-obstetrician, having a private practice in Heraklion, Crete, and collaborating with private health clinic 'MITERA' - Euromeda in Heraklion. With around 21 years of experience as a gynecologist-obstetrician, she specializes in ultrasound, colposcopy, minimal and advance gynecologic surgery, aesthetic gynecology, fertility consulting, menopause consulting, operative obstetrics, high-risk pregnancy, normal deliveries, antenatal, intra-parum, postnatal care, breast diseases, and teenage issues.

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Ghazia Shah
Ghazia ShahMSc, MA, BEd
Ghazia is a scientist-turned-writer with three years of research experience in Cancer Biology. She did her masters degree in Biotechnology at the University of Kashmir and bachelors in Education at the same university. Ghazia then delved deeper into the science of language with a masters in English.

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Rebecca is a pregnancy writer and editor with a passion for delivering research-based and engaging content in areas of fertility, pregnancy, birth, and post-pregnancy. She did her graduation in Biotechnology and Genetics from Loyola Academy, Osmania University and obtained a certification in ‘Nutrition and Lifestyle in Pregnancy’ from Ludwig Maximilian University of Munich (LMU).

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Reshmi Das has over four years of experience as a clinical coordinator, medical content writer and medical conference coordinator. Her continuous interest in medical journals and writing makes her write well-researched articles for MomJunction.

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