Heat Rash
Heat rash -- also called prickly heat or miliaria -- is a common condition in which areas of the skin itch intensely and often feel prickly, or sting, due to overheating. Heat rash looks like tiny bumps surrounded by a zone of red skin. It usually occurs on clothed parts of the body, such as the back, abdomen, neck, upper chest, groin, or armpits and goes away on its own within a few days. In severe forms, however, heat rash can interfere with the body's heat-regulating mechanism and cause fever, heat exhaustion, and even death.