What is another name for redness of the skin?

Erythema is the correct term for the redness of the skin, often resulting from increased blood flow to the area's surface. This condition can occur due to various factors such as inflammation, irritation, or increased temperature. When blood vessels in the skin dilate, a larger volume of blood can cause the skin to appear red.

While terms like dermatitis also refer to skin conditions, they specifically denote inflammation of the skin itself, which may involve redness among other symptoms, such as itching or swelling. Hyperemia is a broader term that refers to an excess of blood in a particular area, not limited to the skin and can occur in various tissues. Inflammation is a biological response to harmful stimuli and includes not just redness, but also swelling, heat, and pain. Erythema specifically covers the aspect of skin redness, making it the most accurate choice for this question.