
Don’t Worry About Your Baby’s Heat Rash! Here’s the Right Way to Manage It
The unwanted visitor that arrives without fail every summer is the baby heat rash. When you see red bumpy skin appearing on your baby’s delicate skin, it’s natural for new parents, as well as those experienced in childcare, to feel upset and flustered. “Could it be eczema?” or “Did I dress them too warmly?” these worries race through your mind.
But don’t fret too much. Baby heat rash is one of the common skin troubles due to the natural physiological characteristics of babies. If you understand the cause and respond appropriately, it can improve quickly. Let’s explore ways to manage the heat rash that’s bothering your baby.

Why Do Babies Get Heat Rash?
To understand the cause of heat rash, it’s important first to understand the characteristics of our baby’s skin. Babies have a higher body temperature and perspire more than adults, but their sweat glands are still immature. This means they sweat a lot, but the small and undeveloped sweat pores prevent effective perspiration, causing sweat to get trapped under the skin and resulting in inflammation and rashes. This is heat rash.
Areas and Conditions Prone to Heat Rash
Heat rash tends to appear primarily in areas where sweat accumulates.
- Folds of skin, like the neck and back
- Diaper-covered areas like the buttocks and groin
- Forehead and scalp under hair
- Inside of elbows or knees
Especially during hot and humid summer conditions, wrapping a baby in too many layers or maintaining high indoor temperatures, or during a fever, heat rash can occur more easily. A baby’s skin is still sensitive to external stimuli, so even slight exposure to a warm and humid environment can quickly elicit a response.
Could It Be Another Skin Condition?
Many parents often confuse heat rash with other skin troubles, such as baby acne or atopic dermatitis.
- Baby Acne: Typically appears between 2 weeks to 3 months old, forming tiny breakouts on the face, especially cheeks and forehead, due to hormones and usually fades naturally with time.
- Atopic Dermatitis: A chronic condition with severe itching and dry, rough skin, often appearing in skin fold areas. It has a higher occurrence rate if there’s a family history.
While heat rash generally improves with cooling within a few days, persistent symptoms or severe itching suggest a different condition, so a doctor’s visit for an accurate diagnosis is advisable. Correct diagnosis is the first step to proper management.
Practical Home Tips for Managing Baby Heat Rash
Managing heat rash can be summarized into three core principles: ‘Coolness’, ‘Cleanliness’, and ‘Moisturization’.
1. Maintain a Cool and Comfortable Environment
This is the most basic yet crucial principle. Keep indoor temperatures between 22-24°C and humidity at 40-60% to help your baby sweat less. Dress them in light, breathable cotton clothes, and change them immediately if they become damp with sweat.
Although a baby’s skin can be easily irritated, there’s no need to worry if you know the right management techniques. For more inquiries about your child’s skin concerns, feel free to email MOM-i.
Contact MOM-i for inquiries.
Email inquiries: momi@emtake.com