Skin cancer rash and leukemia petechiae, a type of rash caused by blood cancer, can cause sores or wounds that do not go away ...

There are many other causes of non-blanching rash, some of which are serious and some of which are less so. People with leukemia, a type of blood cancer, are more prone to broken blood vessels.

Often referred to as "leukemia spots," these petechiae ... or at least 10 times larger than purpura. The rash itself doesn't need treatment. If it’s caused by a virus, the spots should clear ...