Heat Rash On Baby: Types, Diagnosis And Ways To Treat It

Heat rash on baby is a condition that happens when a baby’s skin gets warm. The condition is more common among babies than adults. The condition happens when sweat gets trapped under the skin.

Heat rash on baby's back

Could your baby’s skin condition be something besides a diaper rash? Fun Fact: About one-third of children have super-sensitive skin. Your little one might be experiencing the condition known as heat rash on the baby. This happens when sweat gets trapped underneath the baby’s skin. Babies are more likely to have heat rashes than adults due to factors like small sweat glands. Other factors cause them to experience this condition that’s less common than among adults. Another factor is a baby’s skin is simply more sensitive than a child, teen, or adult. So if a baby has naturally sensitive skin, he/she will be even more likely to have this condition.

There are various other reasons why a baby might experience heat rash. They include tight clothes, blankets, and swaddles. These are some of the other factors that make this condition more common among babies. This condition needs to be diagnosed early so you can treat your little one quickly. This can help to deal with it effectively. Calamine lotion, Epsom salt, and aloe vera are some of the home remedies that can treat this condition safely and naturally. They can help to avoid possible side-effects from prescription drugs.

What Exactly Is Heat Rash?

This condition is also known as “miliaria” or “prickly heat” involves heat getting trapped underneath the skin. It happens when the baby’s skin becomes too warm. This can cause skin that’s uncomfortable and itchy.

This skin condition can happen among people of all ages. However, it’s more likely to happen among babies. There are some main factors. Newborns/infants have smaller sweat glands and more sensitive skin than adults due to it being tougher to control body temperature. Tots’ skin also has more skin folds, so it traps

There are various reasons why babies get heat rashes besides sensitive skin. They include being wrapped in blankets and swaddles. This is required for protection, but can also cause a buildup of sweat.

Another factor is tight clothes, which prevents air circulation and the skin from being able to “breathe.” Babies simply can’t move away from hot environments or remove clothing layers when they feel hot.  

One important issue to consider is heat rash usually goes away over time and doesn’t require treatment. However, it’s important to have a doctor check your baby’s condition if you’re worried about their condition.

Miliaria takes place when sweat gets trapped in the skin. The perspiration caused the skin’s outer layer to get irritated. That triggers a rash. There are three main types:

  • Ruba: This is the most common variety of heat rash. It happens when sweat glands close to the skin’s surface get blocked. Another cause is when the top two layers of skin cause bumps or symptoms like redness/itching.
  • Profunda: This is the most serious kind of heat rash but doesn’t happen often. When the top skin layer’s sweat gets into the second layer, it causes flushing/burning. This can cause heat exhaustion and infection.
  • Crystallina: This is the least serious kind of heat rash. It happens when the top skin layer’s sweat glands get blocked. This causes small clear/white blisters.

Heat Rash on Baby: Home Remedies

Fans and Air Conditioner

Make sure your little one avoids humid air and sweating. Air-conditioners and air-fans can help to prevent these situations. Just make sure your baby’s skin dries completely after bath time to prevent catching a cold.


This not only is a superfood for your little one but also helpful for bath time. Just add some oatmeal to slightly warm water. Then allow your baby to soak for 20 minutes. The water needs to be just a little warm so your newborn/infant doesn’t experience skin irritation.

Another option is an oatmeal paste that includes cereal and water. Just add it to your skin. Blend 1:1 oatmeal/water. Then mix it to make a paste.

Cool bath 

When it’s baby bath time make it a cool one. This will help the skin to cool down. Make sure to use gentle cleaning to help unclog skin pores. It’s important because this is a major factor that triggers heat rash.

It’s also important to make sure you provide your little one with proper skincare. Make sure the skin gets dried well to help avoid skin irritation.

Cold Compress

These are good options for treating skin irritation. Try to apply ice wrapped in clothes or cold water-soaked face clots. This can help to reduce irritation/pain linked to heat rash.

Light and lose clothing

It’s important to make sure your baby wears loose clothing. Since tight skin is one of the main causes of skin rash it’s important to prevent conditions that can cause more sweating. You should also pick clothing that wicks moisture to keep the clothes dry and your baby comfortable.

Some good options are synthetic fabrics designed to absorb sweating. They can help to wick moisture better. Cotton is another good option and might be more skin-friendly overall.

Heat rash on baby remedies

Heat Rash on Baby: More Home Remedies

Talcum powder

Make sure to go with unscented to help prevent skin irritation. This powder can help to reduce sweat by soaking up sweat. That can help to make sure the skin pores aren’t clogged.

Baking soda

This is a go-to option for helping to keep fridges and cupboards smelling fresh. You can also use it to help treat itchy skin. There’s a good chance you already have some baking soda in your pantry. This makes it a good option to treat various skin conditions like heat rash.

Calamine lotion

In most cases, this is a baby-friendly lotion. However, there are some cases when it might cause some side-effects for little ones with sensitive skin. Make sure to stop using the product immediately if your baby has any allergic reactions from the product.

This product can help to treat the rash by soothing itchy skin. Just use a cotton pad to dab a little lotion onto the rash. Then reapply the lotion when needed.

Aloe vera

This has become a go-to ingredient for treating various skin conditions. It can help to treat inflammation and cool down warm skin. It can also help to prevent new infections. Some aloe vera gel can treat swelling/pain from the skin rash.

Epsom Salt

This natural folk remedy has a wide range of different health benefits. It’s believed that a slightly warm bath with 1-2 cups of Epsom salt might help to treat itchy skin. Health experts note that if you use this home remedy it’s important to make sure the baby doesn’t swallow any of the salt.

Hydrocortisone Cream

It’s important to check with your baby’s doctor first before using this product. IT’s not usually applied to baby skin. It should only be used if you get a thumbs-up from your doctor. The cream is usually applied once or twice daily to treat itchiness from the heat rash on the baby. 

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