Seek emergency medical care if you have a high fever, difficulty breathing, nausea or dizziness, or the rash is spreading rapidly. A rash is an area of skin that may be inflamed, irritated ...

In adults, heat rash typically shows up on parts of the body ... The condition often affects the lower legs and causes ...

Adults may develop heat rash in all these places too ... is spreading to other parts of your body like your chest, back or ...