What is a common indication of vasodilation?

Vasodilation refers to the widening of blood vessels, which results in an increased blood flow to certain areas of the body. Flushed skin is a common indication of vasodilation because the increased blood flow causes the vessels near the surface of the skin to expand, leading to a reddening effect. This physiological response can be triggered by various factors, including heat, emotional reactions, or certain medications, all of which promote the dilation of blood vessels and enhance blood circulation to the skin.

In contrast, the other options point to conditions that do not indicate vasodilation. Cold extremities suggest reduced blood flow and potential vasoconstriction, decreased heart rate does not directly correlate with vasodilation effects, and dry skin may occur for numerous reasons unrelated to blood vessel dilation. Therefore, flushed skin effectively represents the visible manifestation of vasodilation.