What is one of the five symptoms of inflammation?

One of the five classic symptoms of inflammation is redness. Inflammation is the body's natural response to injury or infection, and it involves an increase in blood flow to the affected area, leading to this change in color. The redness occurs due to the dilation of blood vessels, allowing more blood to reach the tissues, which is part of the healing process. This increased blood flow brings essential immune cells to the site of injury or infection, promoting healing and fighting off pathogens.

The other symptoms of inflammation include swelling, heat, pain, and loss of function. While symptoms like fatigue, dizziness, and nausea can occur in response to illness or infection, they are not specific indicators of inflammation itself. Thus, redness distinctly highlights the localized response the body has when inflammation occurs, making it a key feature in recognizing this physiological process.