What is one possible sign of hyperemia in the skin?

Redness is a classic sign of hyperemia in the skin. Hyperemia refers to an increase in blood flow to a particular area, which can occur due to various physiological or pathological reasons. When blood vessels dilate and more blood is directed to the skin's surface, it results in a flushed or reddened appearance. This increased blood flow can be caused by factors such as inflammation, injury, or increased metabolic activity in that area.

In contrast, signs such as paleness or coolness to the touch indicate reduced blood flow or vasoconstriction, not hyperemia. Dark coloration may suggest other skin changes but does not specifically signal increased blood flow or hyperemia. Therefore, the appearance of redness is a direct and observable consequence of hyperemia in the skin, aligning it with expected signs of increased vascularization in that area.