Blanch (medical)
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When skin is blanched, it takes on a whitish appearance as
blood flow to the region is prevented. This occurs during (and is the basis of the physiologic test known as) diascopy
.
Blanching of the fingers is also one of the most clinically evident signs of
Raynaud's phenomenon.[1]
Blanching is prevented in gangrene as the red blood corpuscles are extravasated and impart red color to the gangrenous part.
See also
References
- S2CID 221788791. Retrieved 16 October 2022.
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