This indicates that normal blood flow to a given area does not return promptly.
Skin blanching can help healthcare providers identify certain health conditions.
This article discusses blanching, what it is, and how healthcare providers use it to diagnose certain conditions.

Reproduced with permission from © DermNetdermnetnz.org2023.
This photo contains content that some people may find graphic or disturbing.
Reproduced with permission from A DermNetdermnetnz.org2023.
What Does Blanching of the Skin Look Like?
Skin that blanches has a few characteristics:
What Are the Causes of Blanching of the Skin?
There are several reasons why blanching occurs, from simple to more complex.
Blanching can be tested by following a few simple steps:
What Is Diascopy?
Diascopy is a slightly more advanced technique to check skin blanching (compared to using the fingertips).
How Is Blanching of the Skin Treated?
The treatment of blanching skin will vary greatly, depending on the underlying cause.
Treatment depends on the underlying cause.
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