What is the medical term for redness of the skin?

Erythema is the medical term used to describe redness of the skin. This condition occurs when blood flow to the skin increases, which can happen for various reasons such as inflammation, allergic reactions, or increased temperature. Erythema can be a symptom of various medical conditions and is often associated with pain, itching, or discomfort.

In contrast, pallor refers to an abnormal paleness of the skin, cyanosis is a bluish discoloration usually indicating low oxygen levels in the blood, and jaundice is characterized by a yellowing of the skin and eyes due to bilirubin accumulation, often related to liver conditions. These terms specifically describe different skin color changes, making erythema the appropriate choice in the context of skin redness.