When your baby’s skin suddenly looks red or irritated, you probably (like us) go straight into problem-solving.
💭 Is it something they ate?
💭 A new diaper?
💭 Too much heat?
💭 Too much poop?
The first thing we need to figure out is – what kind of rash is this?
Because that is going to make the treatment part so much easier. Let’s go.
Heat rash vs. diaper rash
At a glance, they can look similar - small red patches, a bit of irritation, usually showing up pretty quickly.
But they usually come from very different causes.
Heat rash tends to show up when the skin gets too warm and sweat gets trapped. It often appears in folds - around the thighs, lower belly, or anywhere skin stays warm and slightly damp.
You might notice tiny red bumps, and it can spread beyond the diaper area.
Diaper rash, on the other hand, is usually more localized. It often shows up directly where the diaper sits, especially on areas exposed to moisture and friction.
It may look more patchy, sometimes brighter red, and can feel a bit more sensitive during changes.
Why it happens
With heat rash, it’s mostly about temperature and airflow.
Warm weather, layered clothing, or a snug diaper can create the perfect environment for skin to feel overwhelmed.
With diaper rash, it’s more about repetition and the contents of your baby’s diaper 💩
Moisture, rubbing, direct contact with poop, frequent wiping - especially with traditional wipes - can gradually make the skin feel irritated.
A quick way to spot the difference
If you’re trying to figure out heat rash vs. diaper rash in the moment, this simple question will help:
Does this look like it’s coming from heat… or from friction?
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Spread out, tiny bumps → often heat-related
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More concentrated, especially where wiping happens most → more likely diaper-related
Of course, skin doesn’t always follow neat and tidy categories, but this can give you a starting point.
What helps (without overcomplicating it)
For heat rash, the goal is usually to cool things down.
Looser clothing, a bit more airflow, and keeping the area dry can go a long way.
For diaper-related irritation, it’s usually about being gentler with the skin.
That can mean reducing friction during changes - less back-and-forth wiping, and more of a soft clean.
Many parents find that switching to something like the La Petite Crème Diapering Lotion (used with a cotton pad instead of wipes) helps keep things calmer overall, especially during phases when skin feels more sensitive.
Particularly because it leaves a protective, oily barrier behind to keep your baby’s skin guarded between changes!
When to reach for extra protection
Sometimes, skin just needs a little more support.
If things start to look more irritated, adding an extra protective layer can help reduce further discomfort.
This is where a thicker product like the La Petite Crème Diapering Balm can be useful - especially for areas that need a bit more cushioning during healing moments.
Keeping it simple
The hardest part isn’t usually the rash itself.
It’s the second-guessing.
Am I doing the right thing?
Should I be using a different product?
Are they allergic to broccoli?
But most of the time, it comes back to a few basics:
Keeping the skin protected between changes and reducing friction.