What are common signs of infection in a wound?

Infection in a wound is typically indicated by specific signs that reflect the body's inflammatory response to pathogens. The presence of increased redness, warmth, swelling, foul odor, and increased exudate are classic signs of infection. Redness and warmth indicate increased blood flow to the area as part of the body’s immune response. Swelling occurs due to the accumulation of inflammatory fluids and cells, which are recruited to fight infection. A foul odor may be present, particularly if necrotic tissue or specific bacteria are involved, and increased exudate often signifies the presence of pus, a byproduct of the immune response. Together, these signs provide critical information about the state of the wound and necessitate prompt assessment and intervention to prevent further complications.

The other options do not accurately reflect common signs of infection. Increased scar tissue and reduced drainage, decreased pain, and hypo-pigmentation do not serve as indicators of infection and could instead imply the wound is healing or may signify other issues that are not directly related to active infections.