What Are Capillaries?
Reviewed: Dr. Gromatzky
8. Petechiae
Skin blanching occurs when pressure has been placed on the skin. It happens because the pressure pushes blood out of the capillaries, leaving the skin looking whiter in the affected area. The skin should soon return to its normal color once the pressure has been removed again.
Depending on your condition, your doctor might want to put pressure on your skin to check to see what happens. In some cases, putting pressure on the skin will cause red spots that remain once the pressure has been removed. This is a condition known as petechiae, and it means that the capillaries have been broken by the pressure.
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