A wound infection occurs when bacteria or other pathogens enter a break in the skin, leading to inflammation and other symptoms. Common signs include redness, swelling, warmth, and pus at the site of the wound. Infections can develop from cuts, surgical incisions, or any injury that disrupts the skin barrier. Treatment for a wound infection typically involves cleaning the wound, applying antibiotics, and sometimes draining any accumulated pus. If left untreated, a wound infection can lead to more serious complications, such as sepsis or the need for surgery to remove infected tissue.