5 Things You Need to Know About Heat Rash

Heat rash is a common condition. It occurs when your skin overheats and itchy bumps develop. In temperate climates, it usually happens in the summertime, but in tropical climates, it can occur all year round. The rash can develop anywhere you have sweat glands, but it is most common on the back and chest. It can look like red bumps or like water blisters (see the different types of heat rashes below). The rash is often itchy or prickly (hence its other name, "prickly heat") and can sometimes burn or tingle.

Heat rash on someone's skin. (Image: KuLouKu/iStock/Getty Images)

Heat rash is a common condition. It occurs when your skin overheats and itchy bumps develop. In temperate climates, it usually happens in the summertime, but in tropical climates, it can occur all year round. The rash can develop anywhere you have sweat glands, but it is most common on the back and chest. It can look like red bumps or like water blisters (see the different types of heat rashes below). The rash is often itchy or prickly (hence its other name, "prickly heat") and can sometimes burn or tingle.

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