An abscess is a localized collection of pus that forms within tissue due to an infection. It typically results from the body's immune response to a bacterial infection. The area around an abscess is often red, swollen, and painful, and it may feel warm to the touch. Abscesses can occur in any part of the body, including the skin, internal organs, and even the brain. Common symptoms include fever, chills, and a general feeling of being unwell. Treatment usually involves draining the pus and may require antibiotics to eliminate the underlying infection. In some cases, surgical intervention may be necessary to fully remove the abscess. Prompt medical attention is important to prevent the spread of the infection and to promote healing.