Skin redness resulting from tissue injury is referred to as what?

The term that specifically refers to skin redness resulting from tissue injury is erythema. Erythema occurs when there is an increase in blood flow to a particular area of the skin, often in response to injury or irritation. This increased blood flow is typically a part of the body's natural inflammatory response, which is how it starts to heal tissue.

While inflammation is a broader term that encompasses various responses to injury—including redness, swelling, heat, and pain—erythema specifically pinpoint the symptom of redness. Edema refers to fluid accumulation in tissues, leading to swelling, but does not directly describe the redness itself. Dermatitis is a condition characterized by inflammation of the skin, which can involve erythema, but it is a diagnosis rather than a description of the symptom. Thus, erythema accurately describes the specific phenomenon of skin redness associated with tissue injury.