Anemia occurs when your blood doesn’t have enough red blood cells. Your body makes three types of blood cells — white blood cells to fight infection, platelets to help your blood clot, and red blood cells to carry oxygen from your lungs to the rest of your body and carbon dioxide from the body back to the lungs.
As you itch, you may scratch your skin, which can cause redness and bumps that look like rashes. In some cases, treatment for iron deficiency anemia may also cause rashes.
Aplastic anemia occurs when the body’s bone marrow doesn’t make enough new blood cells. The rashes resemble patches of pinpoint red or purple spots, known as petechiae. These red spots may be raised or flat on the skin.