Non-blanching rash
Non-blanching Rash
Non-blanching rash (pronunciation: non-blan-ching rash) is a type of skin rash that does not fade or disappear when pressure is applied to it.
Etymology
The term "non-blanching" is derived from the French word "blanchir", which means "to whiten". In medical terms, a rash is considered "blanching" if it turns white or fades when pressure is applied. Therefore, a "non-blanching rash" is a rash that does not turn white or fade under pressure.
Description
A non-blanching rash is often a symptom of certain medical conditions, such as meningococcal disease, Henoch-Schönlein purpura, and idiopathic thrombocytopenic purpura. It is characterized by small, flat or raised red or purple spots on the skin that do not change color when pressure is applied. This is often tested using a glass test, where a clear glass is pressed against the rash to see if it fades or disappears.
Related Terms
- Blanching rash: A rash that fades or disappears when pressure is applied.
- Purpura: A condition characterized by small, purple spots on the skin caused by bleeding under the skin.
- Petechiae: Tiny, flat, red or purple spots on the skin caused by bleeding under the skin.
- Meningococcal disease: A serious bacterial illness that can cause a non-blanching rash among other symptoms.
- Henoch-Schönlein purpura: An inflammation of the blood vessels that can cause a non-blanching rash among other symptoms.
- Idiopathic thrombocytopenic purpura: A disorder that can lead to easy or excessive bruising and bleeding, often causing a non-blanching rash.
External links
- Medical encyclopedia article on Non-blanching rash
- Wikipedia's article - Non-blanching rash
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