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When Do Babies Start to Sweat?… And Should You Worry?

As a new parent, you have a lot of questions. When will my baby sleep through the night? When do babies start teething? When do babies start to sweat? Sweating is an essential bodily function that helps regulate body temperature. It’s something that all babies do, but when does it start? 

This article will answer that question and give tips on keeping your baby cool during the summer months. Yeah, we know that all this information can be overwhelming, but we are here to help you with temperature control and other signs of warmth in babies. 

We got you!

Table of Contents

Understanding Babies' Sweat Glands

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Ok, Momma, let’s talk about biology. Sweat glands are tiny tubes in the skin that secrete sweat. There are two types of sweat glands: eccrine and apocrine. Eccrine glands are found all over the body and open directly onto the skin’s surface. Meanwhile, apocrine glands are found in areas with many hair follicles, such as the armpits and groin.

According to the Healthline website, babies have both types of sweat glands, but the eccrine glands are not fully developed at birth. In fact, they don’t reach full maturity until a child is between two and five years old. The apocrine glands, on the other hand, are fully developed at birth. This is why newborns can sometimes have a strong body odor

So, When Do Babies Start Sweating?

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Alright, Momma, here’s the scoop: Newborns start sweating as soon as they’re born. Yep, right out of the gate! But don’t expect them to be drenching their onesies just yet. Babes don’t sweat much at first because their eccrine glands are still tiny overachievers-in-training. Usually, you’ll only notice some moisture when they’re dealing with a fever or chilling in a toasty environment.

Now, here’s where it gets interesting. Around the four-month mark, your little one’s eccrine glands start to level up. This is when you might start noticing more of those adorable sweat beads on their forehead. It’s like their body’s own little air conditioning system is booting up!

But here’s the million-dollar question: Should you be worried about how much your newborn is (or isn’t) sweating? Generally speaking, there’s no need to stress. It’s totally normal for newborns to sweat more than usual at first. After all, they’re adjusting to life outside the womb – talk about a big change!

However, Momma, always trust your instincts. If you notice excessive sweating or if your baby’s running a fever, it’s time to give your child’s doctor a call.

And here’s a pro tip: keep an eye on your baby’s overall body temperature. If they suddenly feel cold all over, it could signal an issue with their nervous system or even something like congenital heart disease.

But don’t panic! These cases are rare, and your doctor is just a phone call away if you’re concerned.

Curious Facts About Infant Sweating

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Image credit: AlisaDyson / Pixabay

Newborns Don’t Sweat Evenly

Interestingly, newborn babies don’t sweat uniformly across their bodies. You’ll likely notice they tend to perspire more on their foreheads, necks, and upper backs. This uneven sweating pattern is completely normal at this stage of development.

If you notice your baby sweating excessively, it’s usually a sign that they feel uncomfortable. Babies can’t verbally communicate when they’re too warm, so they often express their discomfort through crying. When a baby stops crying, it’s typically an indication that their comfort level has improved.

It’s fascinating to note that even newborns have heat-sensing neurons. These neurons play a crucial role in temperature regulation. However, a baby’s ability to regulate their body temperature isn’t fully developed yet. This is why keeping your baby hydrated is essential, especially during deep sleep when body heat regulation can be more challenging.

Older Babies Can Regulate Their Temperature

As babies age, their bodies become more efficient at regulating their temperature. This means that they sweat more evenly and don’t usually sweat as much as they did as newborns. 

However, there are still some situations where babies may sweat more than usual.

For example, if a baby is hot from a warm environment or physical activity, they may sweat more than usual. Babies may also sweat more when they are sick or have a fever. When this happens, it’s important to ensure the baby stays cool and hydrated. 

In most cases, sweating is nothing to worry about and is simply a sign that your baby’s body is growing and changing. However, it’s always best to err on the side of caution and consult with a doctor if you have any concerns.

Tips To Encourage Positive Sweat and Hydration Cycles in Babies

A baby sitting in a bathtub, looking curiously at the camera while reaching out to touch the faucet
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Parents need to encourage positive sweating and hydration cycles in their babies from an early age. Some tips for doing this include:

Making Sure That The Baby Is Well-hydrated

One of the most important things that parents can do to encourage healthy sweating and hydration cycles in their babies is to make sure that they are well-hydrated. This can be done by giving them regular access to water or breast milk. Be attentive to your baby’s cues and offer water or breast milk when they seem thirsty.

Encouraging Them To Get Some Exercise Every Day

Another great way to encourage healthy sweating and hydration cycles in babies is to encourage them to get some exercise every day. This can be done by playing with them and encouraging tummy time. As babies get older, you can also encourage them to crawl, stand, and walk.

Taking Regular Baths

Baths are another great way to encourage healthy sweating and hydration cycles in babies. When giving your baby a bath, use lukewarm water and avoid using soap on its face or genitals. You can add a few drops of hypoallergenic shampoo, like Wild Naturals, to help soothe and relax your baby.

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Dressing the Baby in Loose, Cool Clothing

Another way to encourage healthy sweating and hydration cycles in babies is to dress them in loose, cool clothing. When it’s hot outside, dress your baby in light-colored, loose-fitting clothes. You should also avoid dressing your baby in too many layers of clothing, as this can make them sweat more.

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Avoiding Over Bundling the Baby

Parents must also avoid over-bundling the baby when it’s cold outside. When layering your baby’s clothes, always ensure their chest is covered. You can also put a hat on your baby to help keep them warm. Avoid using a heavy blanket or quilt when putting your baby to sleep, as this can cause them to overheat.

Monitoring the Baby’s Room Temperature

It’s also important to monitor the temperature of your baby’s room. The ideal room temperature for a sleeping baby is between 68 and 72 degrees Fahrenheit. Too hot or too cold can cause the baby to sweat. 

You can use a thermometer to check the room temperature. If it is too hot, you can open a window or turn on a fan. If it is too cold, you can add an extra layer of clothing to your baby or use a space heater.

Monitor Their Diaper Output To Make Sure They’re Not Dehydrated

If your baby is sweating a lot, monitoring their diaper output is important. A good way to tell if your baby is dehydrated is by checking their diapers. If they are producing less urine than usual, or if their urine is darker than normal, this could be a sign of dehydration.

When babies sweat, they lose not only water but also electrolytes like sodium and potassium. These electrolytes are essential for their body to function properly. If your baby is dehydrated, they may be irritable, have a dry mouth, or have sunken eyes.

It’s crucial for parents to encourage positive hydration habits in their babies so that they can avoid dehydration. Dehydration is very dangerous for babies and can even lead to death. Therefore, parents must take a proactive approach to ensure their baby stays hydrated.

Signs That Your Baby Is Overheating

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You can look for some signs to tell if your baby is overheating. These include:

Flushed or Red Skin

One of the most obvious signs that your baby is overheating is if their skin becomes flushed or red. If you notice this, immediately remove your baby from the heat and into a cooler environment.

Excessive Sweating

Another sign that your baby is overheating is if it is sweating more than usual. Babies normally don’t sweat much, so if you notice them sweating excessively, it’s a sign that their body is trying to cool itself down.

Increased Heart Rate

If your baby’s heart rate is increased, it’s another sign that their body is overheating. You can check your baby’s heart rate by feeling their chest or neck pulse.

Rapid Breathing

If your baby is breathing faster than normal, it’s another sign that their body is overheating. You can check your baby’s breathing by watching their chest rise and fall.

Change in Behavior

If you notice a change in your baby’s behavior, it could signify heat exhaustion. Your baby may be irritable or fussy and may not want to eat.

If you notice any of these signs, take your baby to a cooler environment and remove any excess clothing they may be wearing. If their symptoms don’t improve, seek medical attention immediately.

Babies are more susceptible to heat-related illness because their sweat glands have yet to develop fully. Babies can’t cool themselves off as efficiently as adults when the outside temperature is hot, humid, or both.

Examples of Heat-related Illnesses in Babies

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Several heat-related illnesses can affect babies, but the three most common are:

Heat Stroke

This is the most serious form of heat-related illness. Symptoms include a high body temperature (above 103°F), hot, red, dry skin, a fast heartbeat, and difficulty breathing. If untreated, heat stroke can lead to unconsciousness and even death.

If you think your baby has a heat stroke, call 911 immediately and cool their skin with lukewarm water (not cold or ice water) while waiting for medical help.

Heat Exhaustion

Heat exhaustion is less serious than heat stroke but can still be dangerous. Symptoms include a high body temperature (above 103°F), heavy sweating, fast breathing, headache, nausea or vomiting, dizziness or fainting, and tiredness or weakness.

 

If you think your baby has heat exhaustion, move them to a cooler place and remove any excess clothing. Give them small sips or an electrolyte solution if they’re old enough to drink water. You can also wet their hair and clothes with lukewarm water. Don’t give them cold drinks, as they can cause stomach cramps. If their symptoms don’t improve within 30 minutes, call your doctor.

Dehydration

Dehydration is a more serious condition that can occur if someone doesn’t drink enough fluids or loses too many fluids. Symptoms of dehydration include a dry mouth and throat, decreased urination, sunken eyes, tiredness or weakness, and dizziness or lightheadedness. If they lose too much water, they can develop serious complications quickly.

If you think your baby or child is dehydrated, call your doctor right away. They will likely recommend that you give them fluids by mouth, either breast milk or infant formula if they’re young or water or juice if they’re older.

You can also prevent dehydration by ensuring your baby or child drinks enough fluids during the day. If it’s hot outside, have them drink extra fluids and take breaks in the shade. And if they have diarrhea or vomit, give them small sips of fluid often to prevent dehydration.

How Can I Keep My Baby Comfortable During Summer?

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Summer is a great time to enjoy the outdoors with your family. However, it’s essential to take precautions to ensure that your baby stays cool and comfortable in the heat.

Here are a few tips to make sure that your baby stays safe even during the hottest months of the year:

Never Expose Your Baby To Direct Sunlight for More Than a Few Minutes

One of the best ways to keep your baby comfortable during summer is to ensure they’re not exposed to direct sunlight for more than a few minutes at a time.

If you’re going to be outdoors with your baby, make sure to use a stroller with a canopy or umbrella to protect them from the sun’s harmful rays.

You can also dress your baby in light, loose-fitting clothes covering their arms and legs to protect them from the sun. Otherwise, apply sunscreen with an SPF of at least 15 to any exposed areas.

Avoid Spending Time Outdoors During the Hottest Part of the Day

Another way to keep your baby comfortable during summer is to avoid spending time outdoors during the hottest part of the day, which is usually between 11 am and 2 pm. Try to plan your outdoor activities for early morning or evening when the weather is cooler.

If you must go out during the day, try to find a shady spot for your baby, such as under a tree or in a stroller with a canopy. This way, you can still enjoy some time outdoors without exposing your baby to the harsh summer sun.

Dress Your Baby in Lightweight and Loose-fitting Clothing

To help your baby stay cool during summer, dress them in lightweight, loose-fitting clothing. Natural fabrics like cotton are a good choice because they’re breathable and won’t trap heat against your baby’s skin.

Avoid Using Heavy Blankets or Quilts

It’s tempting to bundle up your baby in a heavy blanket or quilt on hot summer nights. However, this can make your baby too warm and cause them to sweat at night. Instead, use a light cotton sheet to keep your baby comfortable.

Monitor Your Baby’s Room Temperature

To help your baby stay cool and comfortable, monitor the temperature in their room. During the summer months, the ideal room temperature for a baby is between 68 and 72 degrees Fahrenheit.

Use Air Conditioning When Possible

Another way to keep your baby cool during the summer is to use air conditioning. If your home has central air conditioning, set it to a comfortable temperature for your baby. When you’re out and about, try to find cool and air-conditioned places, such as shopping malls or movie theaters.

Regardless of how fun you think summer is, it can be a difficult time for babies. You can help your baby stay cool and comfortable all season long by taking simple precautions.

Some babies tend to vomit when they get too hot. Call the doctor immediately if your baby is vomiting, has a fever, or seems especially irritable. These could be signs of heat exhaustion or dehydration.

Conclusion

Babies can sweat as soon as they are born. However, their eccrine glands develop at four months old. At this time, they’re not very efficient, so you’ll often see a baby’s head and neck drenched in sweat while the rest of their body remains dry. 

Kids fully develop their sweat glands by the time they reach six months old. In the meantime, try to keep your baby cool and comfortable during the hot summer months. If you have any concerns, don’t hesitate to call your pediatrician.

Frequently Asked Questions

Babies can sweat as soon as they are born. However, they can’t regulate their body temperature very well. When it’s hot outside, dress your baby in light clothing and keep them in the shade as much as possible.

The best way to cool a baby down is to remove their clothes and put them in a room with a fan or air conditioner. Make sure that the room is not too cold and that the baby does not get chilled.

No, sweating is normal and healthy. However, if your baby is sweating more than usual or if they have a fever, you should contact your pediatrician.

The best thing you can do for your baby if they are sweating is to put a wet washcloth on their forehead or back. This will help to cool them down and make them more comfortable.

Yes, toddlers have sweat glands. However, they do not sweat as much as older children and adults because they have not yet developed the ability to regulate their body temperature as well as older children and adults.

Yes, a baby of any age can sweat. However, newborns and infants sweat less than older children and adults. This is because they have not yet developed the ability to regulate their body temperature as well as older children and adults. If you’re wondering when do babies’ sweat glands develop, it’s when they turn four months old.

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