If you buy something through a link on this page, we may earn a small commission. How this works. Heat rash is a painful skin condition that often occurs in hot weather.
Back to Health A to Z. Heat rash is uncomfortable, but usually harmless. It should clear up on its own after a few days.
Heat rash is a skin irritation that stings and makes your skin red. It is also called miliaria or prickly heat. If you have heat rash, your skin may feel itchy.
Jump to content. Heat rash prickly heat is a red or pink rash usually found on body areas covered by clothing. It can develop when the sweat ducts become blocked and swell and often leads to discomfort and itching.
Avoiding overheating may be all you need to do for mild heat rash. Once skin is cool, heat rash tends to clear quickly. More-severe forms of heat rash may require ointments you apply to your skin to relieve discomfort and prevent complications.
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Longer days, barbecues at the park, beer gardens - there are so many things we love about the warm weather. But the inevitable heat rash cue burning, stinging, itching - you get the drift really isn't one of them. So in a bid to keep our limbs rash-free this summer, we enlisted one of the best dermatologists in the business to fill us in on how to stop the unsightly and oh-so-itchy bumps from ruining your cool.
A Michigan Medicine dermatologist shares everything to know about heat rash symptoms, prevention, treatment and how to discern it from other skin conditions in disguise. With temperatures rising and sun shining, you could get a heat rash. But unlike sunburn, heat rash can cause small, itchy, fluid-filled bumps on the skin, and it can be skin that was never even exposed to sunlight.