In miliaria rubra, blocked sweat glands cause small, red skin bumps. In miliaria rubra, the blocked sweat ducts often appear as hundreds of small pink or red bumps, all approximately the same size and shape.
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Heat Rash or Prickly Heat (Miliaria Rubra)  A parent's guide for infants and babies

Picture of Heat Rash or Prickly Heat (Miliaria Rubra): In miliaria rubra, blocked sweat glands cause small, red skin bumps. Divider line
In miliaria rubra, blocked sweat glands cause small, red skin bumps.
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Overview
Miliaria rubra, also known as heat rash or prickly heat, is a common skin condition caused by the blockage of the sweat gland. Although this rash can be caused by fever, heat rash is more commonly seen in infants who are dressed too warmly (in the winter).
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Last Modified: 22 Dec 2008
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