Gina Johnson
Newborns often sweat while sleeping due to their immature temperature regulation systems, which make them more sensitive to changes in room temperature, humidity, and clothing. Their bodies are still learning to adjust to the outside world, which can lead to fluctuations between feeling warm and cold. Additionally, newborns may sweat due to excessive crying or fussing, which expends energy and raises body temperature. While sweating in newborns is common, excessive sweating may indicate overheating, which can increase the risk of sudden infant death syndrome (SIDS) and other issues like heat rash. Therefore, it is crucial to maintain a comfortably cool sleep environment, dress newborns in breathable clothing, and ensure they stay hydrated.
Why does my newborn sweat while sleeping?
| Characteristics | Values |
|---|---|
| Newborns' body temperature regulation | Newborns have immature temperature regulation systems, making them more prone to sweating. |
| Crying | Crying can cause newborns to sweat as they use a lot of energy and their body temperature rises. |
| Deep sleep | Newborns may sweat during deep sleep as their bodies work hard to regulate themselves. |
| Overheating | Newborns can overheat due to too much bedding, clothing, or a warm environment. Overheating increases the risk of SIDS. |
| Illness | Excessive sweating can be a sign of illness, such as a fever, infection, or congenital heart disease. |
| Allergies | Allergies such as hay fever can lead to increased sweating. |
| Room temperature | The ideal room temperature for newborns is between 65-72°F (20-22°C). |
| Humidity | High humidity can create a moist environment, causing newborns to sweat. |
| Sleepwear | Newborns should wear breathable fabrics appropriate for the season. |
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What You'll Learn
Newborns' immature temperature regulation systems
Newborns' temperature regulation systems are immature, and they are still learning to regulate their body temperature. They have immature sweat glands, which makes their ability to regulate temperature less effective than that of adults. Their nervous system is also underdeveloped, and they are more sensitive to small temperature changes and minimal activity, which can cause sweating.
Babies' higher surface area-to-body mass ratio results in more heat being absorbed and retained. Their immature thermoregulation system adjusts to this increased heat retention by sweating to cool down. They may also sweat when being held, snuggled, or fed, as contact with a caregiver's warm body can increase their body temperature.
To help regulate your newborn's temperature, it is important to monitor their environment and clothing. Keep their room temperature between 65 and 72 degrees Fahrenheit, with humidity between 40 and 55 percent. Use a portable thermometer and a fan to help regulate the temperature and improve air circulation. Dress your baby in breathable fabrics appropriate for the season, and avoid over-bundling or too many layers, as this can cause overheating.
Additionally, crying can cause newborns to sweat as they use a lot of energy, and their excited state can lead to higher body temperatures. If your baby is crying, try to soothe them with gentle words and soft hugs, and consider a warm bath or a gentle massage to help them calm down and regulate their temperature.
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Overheating and Sudden Infant Death Syndrome (SIDS)
Sweating is very common in newborns, especially when sleeping. This is because a baby's body is still learning to regulate its own temperature. Newborns are at risk of overheating or becoming too cold quickly. Therefore, it is important to keep tabs on your baby's temperature and adjust their environment and clothing accordingly.
Overheating is a risk factor for sudden infant death syndrome (SIDS). SIDS is the sudden and unexplained death of a baby younger than 1 year old. It is also known as "crib death" or "cot death" as most SIDS deaths are associated with sleep. SIDS is rare, but it is the leading cause of death among infants 1 month to 1 year old. Most deaths happen during the first 6 months of a baby's life, with most cases rising during cold weather.
To reduce the risk of SIDS, it is important to prevent your baby from overheating. Here are some ways to do this:
- Dress your baby according to the room temperature. Use layers that can be adjusted as needed to keep your baby comfortable.
- Keep the room temperature between 68 and 72°F (20 to 22°C).
- Use a lightweight, breathable swaddle or sleep sack instead of a tight swaddle or too many blankets.
- Avoid sleep positioners, wedges, and other devices that claim to reduce the risk of SIDS, as these can be unsafe.
- Do not cover your baby's head while they sleep, and ensure their blanket is tucked securely under their arms.
- Keep the room well-ventilated and consider using a fan or dehumidifier if the room feels stuffy.
- Avoid smoking during pregnancy and after the baby is born, as this can also increase the risk of SIDS.
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Crying and sweating
Crying is a newborn's way of communicating. Sometimes, they cry a lot. If your baby has been crying for a while, they could have worked themselves up into a sweat. This is similar to how your body temperature may rise while exercising. If your baby experiences this, it's important to calm them down so their body can begin cooling.
If your baby is crying hard and has worked up a sweat, take the time to figure out what they need and help them, and see if the sweating stops. While the cause of the crying could be that your baby is hot, there may be other reasons: they might be hungry, need a diaper change, or just want you to hold them. If a crying bout causes your newborn to sweat, try to soothe them with gentle words and soft hugs. If this doesn't work, give your baby a warm bath or a gentle massage. A quick trip outside may also help. These activities all help calm your baby so they can better regulate their temperature.
Babies don't need to be bundled up at night. Dress your baby in as many layers as you'd feel comfortable in and keep their room at a comfortable temperature. If your baby consistently seems too hot at night, try a lighter swaddle blanket. If your baby is sweating, try cooling their environment a little or taking off a layer. As a general rule, if you're too hot, your baby probably is, too. If the house is kept cool and your baby isn't in warm layers but is still often sweaty, talk to their doctor. Sweating is very common, but excessive sweating could mean that something isn't right.
If your baby is sweating but usually doesn't sweat or doesn't sweat much, they might be getting a cold or have an infection. A fever is a telltale sign of infection, so take your little one's temperature. You can usually use infant Tylenol to lower the fever and ease symptoms, but talk to your doctor about dosing and recommendations if your baby is younger than 6 months.
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Inappropriate sleepwear and bedding
Newborns have an underdeveloped nervous system, which means they are unable to regulate their temperature as well as adults. This can lead to overheating, which is a risk factor for sudden infant death syndrome (SIDS). Therefore, it is important to ensure that your newborn is dressed in appropriate sleepwear and bedding to prevent them from getting too hot.
Firstly, consider the room temperature. Newborns sleep best in a space between 68 and 72 degrees Fahrenheit (20 to 22 degrees Celsius). If the room feels stuffy, you can add a fan to circulate the air and help your newborn cool down. A dehumidifier can also be useful if you live in a humid area.
Secondly, pay attention to the number of layers your newborn is wearing. As a general rule, dress your baby in as many layers as you would feel comfortable wearing given the temperature. Remember that your baby only needs one more layer than you, so if you are comfortable in just a diaper, your baby may only need a light swaddle. It is important to avoid over-bundling your newborn, as this can lead to overheating. Choose lightweight, breathable clothing for your baby, such as high-quality sleepwear made from soft, organic cotton. Avoid putting a hat on your baby overnight, as this can trap heat and prevent it from escaping through their head, an important part of temperature regulation while sleeping.
Thirdly, avoid loose bedding in your newborn's crib, including quilts, blankets, pillows, bumpers, or stuffed animals. Thick bedding can trap moisture and cause your baby to sweat more. Instead, opt for a light blanket or swaddle, ensuring it is not too tight, which can restrict your baby's movement and make it difficult for them to breathe.
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Illness, infection, or other health issues
It is not uncommon for newborns to sweat while sleeping, and this can often be attributed to the baby's immature thermoregulatory system. They are still learning to adjust to the outside world and may have a harder time regulating their body temperature. However, excessive sweating or perspiration, especially while sleeping, could indicate an underlying illness, infection, or other health issue.
Fever or Illness: One of the most common reasons for a newborn to sweat excessively is a fever. Newborns have a harder time regulating their body temperature and can quickly overheat when they have a fever. Sweating can be their body's way of trying to cool down. Other signs of a fever in a newborn include feeling warmer than usual to the touch, especially on the chest or back, and a temperature of 100.4°F (38°C) or higher. Fever in a newborn can be a sign of a bacterial or viral infection and should be evaluated by a healthcare provider as soon as possible. Other illnesses, such as a cold or the flu, can also cause sweating, as the baby's body works harder to fight off the infection.
Infections: Certain infections can also lead to excessive sweating in newborns. For example, bacterial infections like meningitis or a urinary tract infection (UTI) can cause a baby to become very ill, and one of the symptoms may be excessive perspiration. Sweating can also be a sign of a fungal infection, such as candidiasis (thrush), which is common in newborns, especially those who have recently received antibiotic treatment.
Congenital Conditions: In some cases, excessive sweating in newborns can be a symptom of a more serious congenital condition. For example, cystic fibrosis is a genetic disorder that affects the lungs and digestive system, and one of its key symptoms is excessive salt loss in sweat. Another example is congenital adrenal hyperplasia, a disorder of the adrenal glands that can cause the body to produce too much of certain hormones, leading to early puberty and excessive sweating.
If your newborn is sweating excessively while sleeping, it is important to monitor them closely and consult your healthcare provider. They will be able to evaluate your baby, determine the underlying cause, and recommend the best course of treatment to ensure your newborn's health and well-being.
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Frequently asked questions
Newborns have immature temperature regulation systems, making them more prone to sweating. They are also sensitive to small temperature changes and minimal activity, which can cause sweating. Additionally, newborns tend to sweat when held, snuggled, or fed, as the caregiver's warm body can increase the baby's body temperature.
Signs of overheating include sweating, fussiness, restlessness, and listlessness. Newborns are at risk of overheating, especially during sleep, so it is important to monitor their temperature and ensure they are dressed in lightweight, breathable clothing.
To prevent overheating, keep your newborn's sleep environment comfortably cool and ensure they are dressed in breathable clothing. You can also try removing any extra layers of clothing or bedding that might be causing your baby to overheat.
Excessive sweating that is unusual for your newborn could indicate an underlying health issue. If your newborn is sweating excessively and displaying other signs of illness, such as a fever, it is important to contact your pediatrician.
