 | This articleis missing information about difficulty of observation in people with dark skin. Please expand the article to include this information. Further details may exist on thetalk page.(December 2020) |
When skin isblanched, it takes on a whitish appearance asblood flow to the region is prevented. This occurs during and is the basis of the physiologic test known asdiascopy.
Blanching of the fingers is also one of the most clinically evident signs ofRaynaud's phenomenon.[1]
Blanching is prevented ingangrene as the red blood corpuscles are extravasated and impart red color to the gangrenous part.
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