In miliaria rubra, hundreds of red, itchy bumps can suddenly occur, as seen here. This close-up image exemplifies the smooth, red skin lesions typical of miliaria rubra. In miliaria rubra, the skin bumps (papules) are usually all approximately the same size and concentrated in the same skin area.
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Heat Rash or Prickly Heat (Miliaria Rubra)  Information for adults

Picture of Heat Rash or Prickly Heat (Miliaria Rubra): In miliaria rubra, hundreds of red, itchy bumps can suddenly occur, as seen here. Divider line
In miliaria rubra, hundreds of red, itchy bumps can suddenly occur, as seen here.
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Overview
Heat rash (miliaria rubra), also known as prickly heat, is a rash of small red bumps caused by blockage of the sweat glands. It can be due to high fever, excessive sweating, or being over-bundled. It is commonly seen in hot, humid tropical climates. It can cause discomfort, itching, and, sometimes, stinging or "prickly"-type pain.
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Last Modified: 22 Dec 2008
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