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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Signs and Symptoms
Heat rash can occur after exposure to hot conditions. There can be many small, red bumps all over the body. The bumps of heat rash usually occur in highest concentration in covered areas where there is a lot of friction, such as the neck, chest, and body folds. The face, palms, and soles are generally not affected by heat rash. The rash can cause intense itching and stinging, which can become worsened by heat. The individual may feel fatigued and become intolerant of heat because of little or no sweating at the affected areas.
Last Modified: 22 Dec 2008