One of the most painful infections I have ever had was an abscess. I leaned that the puss associated with the condition was actually a device the body uses as a way of protecting itself, and containing and fighting the infection. The abscess resulted from a damaged tooth and the pain was like nothing I had ever felt.
My doctor prescribed antibiotics, which cleared up the infection. Good hygiene is very important when you are trying to prevent or get rid of an abscess. This can be more difficult when the infection is in the mouth because the human mouth is the perfect breeding ground for bacteria.