What is a sign of infection in a wound?

Increased redness around the wound is a key indicator of infection. When a wound becomes infected, the body's immune response causes increased blood flow to the area, leading to localized redness and warmth. This response is a part of the inflammatory process that occurs when pathogens invade the tissue, signaling that the body is attempting to fight off the infection.

In addition to increased redness, other signs of infection may include swelling, increased drainage, foul odor, and a change in pain level. While the presence of redness can indicate an infection, it is important to consider other symptoms in conjunction with it to assess the severity of the condition adequately.