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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Prickly Heat (Miliaria Rubra):
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Picture of 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
Prickly heat (miliaria rubra), also known as heat rash, 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 seen commonly in hot, humid tropical climates. It can cause discomfort, itching, and, sometimes, stinging or "prickly"-type pain. 
Last Modified: 2 Mar 2008

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