A bacterial abscess is a localized collection of pus that forms when bacteria infect a tissue. This infection leads to inflammation, causing the body to send white blood cells to the area to fight off the bacteria. The pus consists of dead cells, bacteria, and tissue debris, and it can occur in various parts of the body, including the skin, organs, and cavities. Common causes of bacterial abscesses include injuries, surgical procedures, or conditions like diabetes that weaken the immune system. Treatment typically involves draining the abscess and may require antibiotics to eliminate the infection. If left untreated, abscesses can lead to more serious complications.