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.
Blanching is prevented in gangrene as the red blood corpuscles are extravasated and impart red color to the gangrenous part.
See also
Symptoms and signs relating to skin and subcutaneous tissue |
|---|
Disturbances of
skin sensation |
- Hypoesthesia
- Paresthesia
- Hyperesthesia
|
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| Circulation |
- Cyanosis
- Pallor
- Livedo
- Flushing
- Petechia
- Blanching
|
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| Edema |
- Peripheral edema
- Anasarca
|
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| Other |
- Rash
- Desquamation
- Induration
- Diaphoresis
- Mass
|
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| Skin |
- Asboe-Hansen sign
- Auspitz's sign
- Borsari's sign
- Braverman's sign
- Crowe sign
- Dennie–Morgan fold
- Darier's sign
- Fitzpatrick's sign
- Florid cutaneous papillomatosis
- Gottron's sign
- Hutchinson's sign
- Janeway lesion
- Kerr's sign
- Koebner's phenomenon
- Koplik's spots
- Leser-Trelat sign
- Nikolsky's sign
- Pastia's sign
- Russell's sign
- Wickham striae
- Wolf's isotopic response
- Munro's microabscess
|
|---|
| Nails |
- Aldrich-Mees' lines
- Beau's lines
- Muehrcke's lines
- Terry's nails
|
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