A non-blanching rash (NBR) is a skin

rash A rash is a change of the human skin which affects its color, appearance, or texture. A rash may be localized in one part of the body, or affect all the skin. Rashes may cause the skin to change color, itch, become warm, bumpy, chapped, dry, cr ...

that does not

fade Fade or Fading may refer to: Science and technology * Fading, a loss of signal strength at a radio receiver * Color fade, the alteration of color by light * Fade (audio engineering), a gradual change in sound volume * Brake fade, in vehicle brakin ...

when pressed with, and viewed through, a

glass Glass is a non-crystalline, often transparent, amorphous solid that has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics. Glass is most often formed by rapid cooling (quenching) of ...

. It is a characteristic of both purpuric and

petechia A petechia () is a small red or purple spot (≤4 mm in diameter) that can appear on the skin, conjunctiva, retina, and Mucous membrane, mucous membranes which is caused by haemorrhage of capillaries. The word is derived from Italian , 'freckle,' ...

l rashes. Individual purpura measure 3–10 mm (0.3–1 cm, - in), whereas

e measure less than 3 mm. A non-blanching rash can be a symptom of

bacterial meningitis Meningitis is acute or chronic inflammation of the protective membranes covering the brain and spinal cord, collectively called the meninges. The most common symptoms are fever, headache, and neck stiffness. Other symptoms include confusion or ...

, but this is not the exclusive cause.

References

External links

{{Dermatology-stub Cutaneous conditions