An abscess is a collection of pus that has built up within the tissue of the body. Signs and symptoms of abscesses include redness, pain, warmth, and swelling. The swelling may feel fluid-filled when pressed.
Staphylococcus is the most common bacterial cause of skin abscesses. A skin abscess can be the result of a bacterial infection that occurs when Staphylococcus aureus bacteria enter the body through a hair follicle or through a wound or injury that has punctured or broken the skin.
The number of people who die from an untreated tooth problem is small, but the details can be harrowing. An oft-cited case is the 2007 death of Deamonte Driver, a 12-year-old Maryland boy who died when bacteria from an abscess infected his brain.