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Erythema (from the Greek erythros, meaning red) is redness of the skin or mucous membranes, caused by hyperemia (increased blood flow) in superficial capillaries. It occurs with any skin injury, infection, or inflammation. Examples of erythema not associated with pathology include nervous blushes.
What Are Erythrocytes? There are important cells in your body that travel in the blood. They are involved in a gas exchange that is essential to human life. Red blood cells (RBCs) are their most common name, but they are also called erythrocytes. In medical terminology, erythro- means red, while -cyte means cell.