The medical term for redness of the skin is __________.

Erythema is the medical term used to describe redness of the skin. This condition occurs due to increased blood flow to the capillaries in the skin, often resulting from inflammatory processes, irritation, or other dermatological conditions. The term "erythema" comes from the Greek word "erythros," which means red, emphasizing its direct connection to the appearance of the skin.

The other terms, while they may involve skin or bodily conditions, do not refer specifically to redness. For example, lymphedema involves swelling due to lymph fluid accumulation, anorexia refers to a loss of appetite or eating disorder, and sepsis is a life-threatening response to infection that can involve multiple body systems.