Medically reviewed by Archana Sharma, DO 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 ...

Petechiae are red or purple dots on the skin that happen when tiny blood vessels called capillaries break under the skin's surface, creating a petechial rash. A petechial rash is caused by ...