What are common signs of infection?

The identification of common signs of infection is crucial in both medical and sports settings. The correct choice highlights key indicators that are typically associated with an inflammatory response due to an infection.

Swelling occurs as the body's immune response brings more blood flow and immune cells to the affected area. Heat is also a result of increased blood circulation, which helps to fight off pathogens. Redness is another common sign, stemming from the dilation of blood vessels in the area. The presence of pus indicates the accumulation of dead white blood cells, bacteria, and tissue debris, often at an infection site. Finally, a loss of function can occur due to pain, swelling, and other factors limiting the range of movement in the affected area.

These signs are crucial for identifying and managing infections early, ensuring proper interventions can be taken to prevent further complications. Other options, while they may indicate conditions related to illness or other health issues, do not encompass the classic local signs of infection seen in tissues and wounds.