Non-blanching rashes can be a sign of serious illness, but not always Medically reviewed by Brendan Camp, MD A non-blanching rash is a type of rash that doesn’t disappear (or blanch) when ...

Petechiae are tiny red or purple dots that don't turn white when you press on them. They can be caused by infections, certain medications, and vitamin deficiencies. They can also be a symptom of ...