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Non-blanching rash (NBR) is a medical term used to describe a skin rash that does not fade when pressed with, and viewed through, a glass.
It is a characteristic of both purpuric and petechial rashes. Individual purpura measure 3-10 mm (0.3-1 cm, 3/32-3/8 in), whereas petechiae measure less than 3 mm.
A non-blanching rash can be a symptom of bacterial meningitis, but this is not the exclusive cause.
Video Non-blanching rash
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Source of the article : Wikipedia
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