Miliaria is the term used to describe conditions associated with sweat retention in the skin. The flow of sweat is obstructed, meaning it stays trapped within the skin, rather than moving from the ...

Heat rash — also known as prickly heat, summer rash, or wildfire rash — occurs when the sweat gland ducts become blocked with sweat. Cooling or gently patting the rash may provide some relief. The ...

A heat rash typically looks like tiny bumps on your skin. These bumps are sometimes filled with fluid. They can show up anywhere that you sweat a lot, like under the breasts, the groin, or the face.