Although rare, a red rash may indicate leukemia, which is a type of blood cancer. A leukemia rash can look like tiny dots, big plaques, or itchy bumps that do not turn white when you press them.

It develops from the abnormal multiplication of T cells, or T-lymphocytes, a type of white blood cell essential for immune system function. The specific treatment course and prognosis for T-cell ...

Hives are a type of rash with a distinct appearance and behavior. Hives aren’t generally dangerous and often go away on their own. There are many other types of rashes with a wide variety of causes.