What is abscess?  Abscess means the accumulation of pus within any tissue of the body, which is tender to touch, appears red due to inflammation and is marked by apparent swelling.   The collection of pus is a result of the defence reaction against the bacterial infection. The fluid may come out when abscess is pressed. Some abscesses are closed and appear as raised lumps with pus filled inside. If the pain continues, then such abscesses are drained by incision and drainage method by the doctor. What is pus?  Pus is a thick fluid which is formed due to the accumulation of the debris of the foreign particles, bacteria and the white blood cells activated in response to the infection in that particular site. Whenever there’s a break in the continuity of the skin, the bacteria or other foreign body enter the tissue and as a result our body’s immune system becomes active due to the trigger mechanism and lots of WBCs and platelets reach the site to fight with the foreign parti...