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.

Medically reviewed by Daniel More, MD Key Takeaways Swimmer's itch, a common ocean rash, isn't contagious and usually goes ...

A person may develop an itchy lupus rash on the legs. Treatment can include a combination of medications and home remedies. Lupus can cause skin rashes on many parts of the body, including the legs.