A<unk>  (NBR) is 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, - in), whereas petechiae measure less than 3 mm. A<unk>  can be a symptom of bacterial meningitis, but this is not the exclusive cause.
Non-blanching rash
Maculopapular rash
Road rash
Malar rash
Piezogenic papules
Figurate erythema
Uremic pruritus
Picardy sweat